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ADI introduce industry minimum encapsulated 3 differentiating line drive unit

AD8133 of ADI the intersection of industry and minimum encapsulated three the intersection of differentiating and line drive unit at present, it become get one 4 mm in the chip of * 4 mm three the intersection of differentiating and the intersection of line drive unit and complete works. As the engineer uses this new device to drive on a twisted pair cable transmissive and red and turquoise (RGB) Can eliminate three the intersection of chip and solution at the three signal, thus make cost cut down 50% and enable printed circuit board (PCB) Area reduce 75%. As to setting up outside the computer, long-range display unit and keyboard display mouse (KVM) Application, than use discrete three operation amplifier drive the intersection of twisted pair cable and transmissive solution of video signal, RGB of differentiating, have very loud to progress AD8133. The one most key to the application is to enable the electromagnetic disturbance of radiation (EMI) Minimize. AD8133 outputs the gain to noise temperature ratio and - 60 dB in 50 MHz place phase place balance error to has unique internal common modes that is feedbacked and offered, inhibit EMI radiation and can use 5 kinds of unshield twisted pairs (UTP) Cable. A lot of employ the cost that benefit from the twisted pair cable solution to be lower than the coaxial solution. AD8133 driver accepts single-end is input and offered the differentiating to export; Among them every amplifier has a stationary gain to noise temperature ratio of 2 times to compensate the decay that the resistor of the line terminal cause. Though AD8133 specially designs to drive the RGB signal, it can be used for driving any type of analog signal or high speed data transmission. This device drives 5 kinds of UTP cables or differentiating PCB to transmit collinear ability in order to the lowest signal attenuation. Last state the AD8133 one output in order to in circuit isolate and employ with cooperating and using while connecting by dioding in series, thus it is apt to realize the multiplexing of differentiating to allow on the same kind of twisted pair cable. AD8133 driver can use together with AD8129 and AD8130 differentiating receiver. AD8133 adopts XFCB bipolar technology of new generation of ADI Company to make, it has 225 MHz large signal bandwidth and 1600 V / μ s conversion rate. It outputs voltage amplitude of common mode and can be adjusted through exerting one voltage to Vocm can input the pin convenientlying. This Vocm pin can be used for sending the signal superposed in the common mode voltage output too. Stock and offering AD8133 a thousand sheets of ordering amount offered as 2.59 dollar each and can offer the batch products now. Work this device in -40 ℃+85 ℃industry temperature range and if you can't last products, adopt 24 pin LFCSP not to be capsulated at present. Want to know more information, please visit: http://www.analog.com/AD8133. www.analog.com

#ADI is minimum capsulate #three differentiating circuits #the driver

Running side by side and designing law that the circuit board is designed

Utilize software engineering that develop newly can finish efficient to walk abreast circuit board design. Such new technology can make a plurality of designers, a plurality of process and different types of tool simultaneous working in the same design database, and can improve and design productivity prominently.

Is divided with designing into several parts and finishes each partial classic method differently independently, establish new technology by concurrent process at being can at one piece for common data base,and can changes, settlement a contingent conflict each other of synchronized process automatic. This is initiating in EDA trade.

Since adopted CAD in the circuit board design extensively in the 1990s, the manufacturing field has been improving and designing productivity constantly all the time through automation and process optimization means. Unfortunately, with the intersection of circuit and the intersection of design software and technical constant innovation, demand, support new signal, components and parts or board-level to make technical voice, grow to even greater heights, so design time to scarcely shorten (even longer) entirely .

If design methodology have fundamental the intersection of change and, software act the intersection of hardware and technical the intersection of follower and role all the time, will not become and develop the leading person on the curve. It has been the effective magic weapon that the productivity is being broken through all the time that the multidigit engineer is engaged in to engineering runs side by side the same design. The traditional one will divide and rule the law and will designed and is divided into several parts and distributed into each engineer hand, link each part finally, and through the compulsory measure (make the decision automatically according to the rule with good preliminary definition) Or ingenious means (let engineers solve the conflict one by one) Solve all conflicts.

It is quite valid that this kind of method is designed to the schematic diagram of the circuit, because it can cut the design apart into a plurality of module and page directly according to the function. Even so, the method need quite a lot of hand operation solve the intersection of interlinkage and problem among the module still, such as the famous conflict of the signal, component are omitted etc.. So long as the designer can not see each other what the other side is doing, these above-mentioned faults probably take place.

If one run side by side the design method allows a plurality of designers and do the same design at one time at the same time, by editor content when designers other make,can management various potential conflict automatics real-time, then this kind runs side by side the design method obtains optimal flexibility and productivity.

Run side by side and design the framework

A design process supervisor (server) that designing technique needs to run in the network environment runs side by side newly And a plurality of design customer end. The groundwork of the server software is to receive and upgrade request from each customer end, and check request in order to guarantee that has not violated the design rule, then bring into step each customer end according to upgrading the content.

There must be one's own dedicated processors and memorizers in each customer end. The new one runs side by side and designs the framework to still suppose the communication system can support required minimum bandwidth and maximum of the real-time high-efficient exchange message between customer end and server to delay time. Each customer end can be seen and designed entirely, and observe the editor of other customer end while dealing with them in the server. The design database allows to store any place in the network.

This kind runs side by side and designs the framework to allow a plurality of designers to do the same design at the same time, do not need to cut apart and design in logic or any other ways. This is a really real time cooperative design environment, managing the problem with relevant data integrity at time when under this kind of environment all - link operating with cutting apart the boundry and cutting apart will not appear.

Because a plurality of designers can do the same design not having any restriction by way of walking abreast, so can shorten the whole design cycle prominently.

There are associated design groups in each design, there are only the members of the group the design data of access permission. Any group members can all serve and start a design meeting in server and single customer. Other customer end can participate in this meeting at any time.

The design is loaded on the server while beginning most, after joining the meeting on the customer end and downloading the current state that the server is designed to the memorizer of the customer end automatically, the customer end gets initialisation and is moved ahead simultaneously. Once the customer end joins and designs the meeting, it is edited on can use the usable standard editing tool in the utility program to designing ing.

The editor incident is that one that is initiated by the customer end moves about independently, it upgrades request to mail to the server as one. Move B to, order, make up one the intersection of editor and incident one device from some A, beginning of incident to choose device, end of incident to click with mouse (equivalent input) Point out the new position. The editor incident is mailed to the server as a transaction, it describes the thing to be deleted and thing to be added.

The editor incident that the customer end produces must carry out local design rule checking (DRC) first before sending to the server each time ,Then set up priority that good editor ask and enter, input message queuing according to principle of first-in first-out. The server receives and enters its integration the design database first after the editor asks, then carry out DRC. If has not found any question, the editor asks to be sanctioned, and mail to all customer end through outputting the message queuing, synchronism used for key database inside the customer.

Most computation time is spent the customer serve here. The target target is increased, edited and deleted, carry out all automation mechanized operation correlated to those editors (such as pushing away, crowding and smooth) at the same time on the customer end . Compared with customer end, the load of the server should be relatively a little lighter, so will not influence system performance. The test of this environment shows the response of the server very fast, will not decelerate customer end.

Automatic circuit layout of the circuit board

The automatic circuit layout of designing technical second application to be the circuit board runs side by side. Distributed automatic circuit layout the intersection of circuit board and the intersection of routing and software for many years " The strong weapon " . IC cloth wire device has already been transformed into the distributed environment and run in the past. But, there is very big difference in the routing question of the circuit board, people have still thought up to now that must adapt the automatic cloth wire device to fully utilize a plurality of computers to finish the advantage of the same design together. Software supplier and third party engineer have done numerous attempts in attempting to obtain acceptable characteristic and promoting, but end in failure.

The framework that designing technique adopts of new running side by side can be solved and distributed most key issues under the routing environment, it knows how to prevent or solve the conflict. Same, the server is taken on to design the process to manage roles, the request coming from each automatic cloth wire device customer end is to other customer end in the servers by integration, checking and radioed. All automatic cloth wire device customer end hold-in, so as increasing the new one here when routes in the route, the probability of the routing route conflict is very low.

#The circuit board is designed #EDA #CAD #runs side by side and designs the law

Flying promises the semiconductor to introduce the high-performance RF power amplifier module

Fly and promise the semi-conductive company and claim to introduce the brand-new RF power amplifier module (PAM) RMPA2455, directs against the high-performance Wireless Local Area Network (WLAN) of 2.4-2.5 GHz frequency band Customer and access point employ and design. Device this high to capsulate, combine together while being unleaded in low-side in 3 mm in small single gain and 3 x in output power, 30dB 30 dBm unique, offer the incomparable remarkable characteristic of device of the same type of the industry. The best choice that these characteristics make RMPA2455 designed as 5V environmental linear power amplifiers, offer the unequalled characteristic in comparing the more miniature capsulation area of other PAM schemes. RMPA2455 device adopts the low-side high, 16 pins, 3 x 3 x 0.9 mm QFN to capsulate, both ends of import and export has 50 ohms of internal matched impedance, can reduce the required PCB plate card space of new generation to at least, and simplify and integrate at the same time. The detector offers power detectability on slice of this device, but the logic function offers energy-conservation to shut down and select. Low power consumption and outstanding linear scale that RMPA2455 device possesses are flying and promising the exclusive InGaP heterojunction bipolar transistor of the semiconductor (HBT) Technical achievement. Fly and promise the general manager Russ Wagner of product division of the semi-conductive RF power and claim: " RMPA2455 has characteristic with leading industry, including 30 dB small single gain and output power of the 22 dBm modulation make 3% of the EVM characteristics, this is exactly the major cause which promises the semiconductor device of adopting flying in his standard design of platform of mainstream in one of the maximum PC mother board manufacturer the world. RMPA2455 device produce in enormous quantities already now, and abundant to fly, promise the intersection of 3 x and 3 and 4 mm RF series power amplifier series 4 x that semiconductor expand constantly. The designer can utilize and fly to promise the semiconductor device, is used in various CDMA/CDMA2000-1X, U.S.A. PCS, South Korean frequency band, frequency band of the honeycomb, WLAN and WCDMA application. " Other key features and specifications of RMPA2455 power amplifier include: " Employ and pay and optimize in an all-round way to 802.11b/g access point; " The work is in the mains voltage of 5.0 V positively collecting electrode; " Bias and shut down and select with the energy-conservation of logic control; " Have integrated power detector of 20 dB dynamic range; And " DC separates RF I/O. Fly and promise the semiconductor and offer the component in enormous quantities various in style for wireless communication trade, including HBT and pHEMPT GaAs MMIC, launching the module, and is used in mobile phone, WLAN system, the components of the Wireless Base Station, data telecom system and millimetric wave system.

#Flying promises the semiconductor #RF #power amplifier module

ST puts out advanced untouchable electronic passport and ID card solution

Purpose the intersection of law and semiconductor announce company this develop most advanced double-interface in the world ' Contact /untouchable) Safe IC. EEPROM of this security IC built-in 66,000 bytes which is named ST19WR66, can be according to International Civil Aviation Organization (ICAO) Regulation measuring record of storing biological and it is personal information. ST good-fame nonvolatile memory technology makes us offer the most high EEPROM memorizer of reliability to customer, the holding period of data is as long as 10 years, especially suitable for the life time of application of the passport type. The 224,000 bytes user ROM memorizer is suitable for storing operating system and program code; The users RAM of the 6,000 bytes, advanced 8 handling capacity of safe microcontroller that combine with, support fast data processing, accord with the fast and individualized data processing basic demand proving fast at the scene during the course of making of passport / ID card. The general manager Reza Kazerounian of product division of ST intelligent card says: " This product can meet the demand for growth day by day to the double-interface safe IC of the market, the built-in interface at a high speed, offer electronic passport and great required memory capacity of ID card / governmental application. Silicon technology of ST proves through practice, and have world-class manufacturing capacity, keep the long-term leading position on this market, so, ST is government's long-term great project such as the ideal cooperative partners of ID card and passport. " This chip still integrates a public key-ciphering modulus processor (MAP) , an enhancement type (eDES) Hardware DES engine and AES-128 ( Advanced to encrypt serving) Function of the software library. These advanced ciphering units offer fast data encrypting / declassification function for employing, as to the memory, identity authentication and digital signature that the responsive personal materials are recorded it is indispensable. Because ST has long history in offering ISO14443-B RF interface, so, this company can be that untouchable application offers 848,000 interface at a high speed per second, the untouchable interface of high speed can reduce individualized time measuring conversely, accelerate the verification speed in the outpost of the tax office of frontier of the electronic certificate. ST intelligent card IC solution used for government's project is IC technical capacity that ST makes in the whole world and empirical perfect combined result in the field of intelligent card IC, today, ST participates in the world-leading most innovative project that some governments initiate, for example: Japan Juki card project with utilizing ST19XR34 double-interface products of the pioneer nature, Italian card, Italian driving license, France's health card plan and Brunei ID card project. ST19WR66 products plan for the test subject outloading of passport in the fourth quarter of 2004, began batch productino through ISO15408 public standard EAL4 + one grade of products authorized in the first quarter of 2005. Products that will be handed over not only including the chip also includes according with ICAO canonial untouchable capsulation. The intersection of market and unit price of product this 2.5 and 3.5, concrete price look at, order quantity and final capsulation and make. www.stmicroelectronics.com.cn

#Intelligent card #ST #untouchable #electronic passport #the solution of the ID card

The large-scale medical equipment electricity deepens and designs discussing simply

Went through 2 years to complete using at last in the building of the centre of tumour of Chinese People's Liberation Army General Hospital, it is China and even the Asian most advanced tumour rescue center at present, bilaminar 15 layers of 35,000 square meters in floor area and monosomatous inside on the ground in the underground, there are 26 full-length medical equipments ' Cyclotron, it is faulted accelerator, DSA, PET/CT, DR, thermotherapies high-frequency, simulation last machine, behind install,etc.) ,Among them 10 apparatuses are China's first introduction, the main design that electric and specialized as this project, each set apparatus following cooperating with numerous international apparatus producers, exchange, designing, confirming, designing, publishing picture step that be constructed, cooperated, debugged again, course though the hardships, learn a lot of things, see an apparatus which connects one comes into operation smoothly, handle patients and serve the scene of the society, that kind of feeling is unable to speak tables. Hope oneself in cooperate, deepen some technology in the the design, reap and make some summaries, for counterparts to consult.

The electric designing requirement of the large-scale medical equipment, will have a difference because the manufacturer is different, the key designed still lies in and the apparatus producer's professional engineer one is socialised, the correct understanding of the English materials, installation procedure and operation principle of the genuine understanding apparatus. Describe as follows on technological focal point and difficult point in the design as follows.

A distribution box

The main engine must be furnished with the specialized on-the-spot distribution box, this distribution box and on/off switch (EAT) linking up with it And emergency cock (AT) Must install before installation in place. Ancillary equipment and other electricity consumption facilities are (such as illumination, air conditioner) Power should offer by public electric wire netting of the hospital, be can install on the scene in distribution box controlled switch and protective circuit of themmed, but does not allow the on-the-spot distribution box to supply power for it absolutely.

The following is a circuit theory of the return circuit that the inner host computer of distribution box of tumour centre DSA apparatus supplies power:

The systematic power accords with the national norm, voltage 380V, maximum deviation can't exceed 10%. Frequency 50Hz, maximum deviation can't exceed 0.5Hz. The maximum deviation among the voltage between phases can't exceed 2% of the minimum phase voltage. The apparatus maximum power is 171KVA, serial power 20KVA, power factor 0.9; Apparatus crest current 289A twinkling of an eye such as maximum, continuous current 31A, can adopt circuit breaker rated current empty to turn on to go on protecting for 160A. The individual line of facility request supplies power. The three-phase line introduces the switch board with PE thread together after indicating phase sequence. Entering the wire cable must adopt the multiwire copper core wire, insert the circuit breaker that the rated current is 160A in the cupboard, and cable color and circuit breaker specification must accord with the regulation of the standard electrical installation manual. The switch board must possess and defend uncapping and locking the function, so as to ensure the demand of electric safe operation. The switch board emergency power off button needs to install on the wall by operating an operating desk of China, it is convenient for operating personnel to cut off the systematic power while the contingency takes place.

Second, systematic power supply cable

Preferably dispose the specialized power cable from voltage transformer to scene distribution box, and must be the copper core cable. Forbidden to insert the inductive load of high-power on this power cable, such as the air conditioner, the lift, the refrigerator,etc., in order to avoid the interference caused at the time of the start-stop of apparatus. In order to guarantee the resistance-value in line of power accords with the requirement in the above table, must follow actual construction length, one's own inner resistance-value of inner resistance-value and on-the-spot distribution box of the voltage transformer Ausgang of the cable, calculate the minimum sectional area of the cable spread, lay the length the longer, the Ausgang of the voltage transformer and inner resistance-value of the on-the-spot distribution box are the higher, the cable sectional area requires that the greater. The cable sectional area is chosen according to the formula computing of the following experience:

Cable sectional area A =(2* lays the length) /(56* cables of one's own resistance-values) .

Give an example: Measure in fact: It is 100m that the cable lays the length actually, is the inner resistance-value of the Ausgang of the voltage transformer 0.060 kilohms? ,The autogenous inner resistance-value of the on-the-spot distribution box is 0.030 kilohms.

So: One's own maximum of the cable allows the resistance-value =0.11-0.06-0.03 =0.02? . Cable sectional area A =( 2* 100) /( 56* 0.02) =178.5,So the cable sectional area should be 185mm2 at least.

Third, illumination are required

Preferably systematic form combined with adjustable incandescent lighting by the invariable fluorescent lamp illumination, in order to satisfy the patient's comfort and facilitate the operation of staff members. Take centre DSA of tumour as examples as follows, propose adopting the following lighting schemes:

Fourth, adopt and share grounded system and equipotential connection

Designing earlier stage, producer will demand to earth the apparatus alone, we should not be interpreted as this apparatus on the earth lead which earthes the steel plate this connect other apparatuses, so as not to interfere with. But not make the ground electrode alone. Not when we meet some producer stubborn requirements to make the ground electrode alone, do not adopt us to share and earth, I should analyze the explanation from the following aspects.

1. International standard IEC61312- 1. U.S.A.'s electric regulation (NEC) . China lightning protection normal ' 6.3.3 piece and 6.3.4 pair) Stipulate, adopt, share grounded system with equipotential to connect.

2. Adopting the inner electronic device of BLDG which is sharing the grounded system, it is difficult to set up earthing alone. Because of the outer cover of apparatus, the hardware of the whole BLDG, stiffening ribs, electricity guard ground systems insert and share the grounded system. If want to draw from the electronic device alone (function) The outdoor single ground electrode that the earth lead reaches, and it is difficult to totally isolate with the above-mentioned share grounded system in order to avoid striking back the voltage.

3. The single specialized earth lead is in high frequency (the operating frequency of the information apparatus) Under the situation, impedance is very large, so it is pointless to require the resistance to be small. Because in the impedance infinity of specialized earth lead from the syntony condition, disconnect in other words, become an aerial, make the apparatus accept the undesired signal instead.

4. Earth and unfavorable to voltage protection alone.

5. Needn't be afraid in cases TN-S is systematic the noise disturbance electronic device of the power-frequency current (PE and N separate, PE electric current of the without) at ordinary times . In more places of electronic device, should adopt the steel tube and close the steel raceway wired cable, in order to prevent short circuit current relatively multi-place of single phase earthing from flowing through to share the grounded system, cause the interference on electronic device.

So in the engineering, continue to use the old standard to require to some foreign countries and Chinese manufacturer the earthy method should be corrected alone. The above to design experience exchangement of about large-scale the intersection of medical equipment and electric promotion of computer lab, if there is not complete enough, please propose making a comment!

Bibliographical reference

2. Apparatus materials that the medical equipment Division of U.S.A. GE Company offers

3.IEC60364-7-710 INTERNATIONAL STANDARD

#Medical equipment #electric #distribution box

Announce the financial report of third quarter of 2004 in Angery science and technology

Angery science and technology has been announced by the financial report on July 31, 2004 today. The report reveals, company's order quantity is 1,780 million dollars in the third quarter in 2004 fiscal years, the income is 1,890 million dollars, have increased by 21% and 25% separately compared with the same period of last year. Calculated by U.S.A General Motors Corporation's accounting criterion, the company reported the net income of 100 million dollars in the third quarter, or 0.2 dollars of thin income of stand per share, and the amount of loss of the company was 1,560 million dollars at the same period last year, or 3.28 dollars for every strand. The net recombination not considering 54 million dollars and amortizing the expenses, the net income is 1.54 hundred million dollars that Angery science and technology opens in the third quarter in 2004 fiscal years, or 0.3 dollars of net profit per share. And the same period last year, it is not after out-of-pocket expenses to deduct 1,450 million dollars used for compensating deferred tax assets, company's net deficiency is 11 million dollars, or 0.02 dollars of net deficiency per share. The intersection of Angery and scientific and technological Chairman, President & CEO receive Der o Palestine kindness carry on one's shoulder or back special Mr., say: " We are very satisfied with the financial report in the third quarter. The intersection of company and income 1,890 million, each of net profit reach 0.3 dollars, close to the anticipated highest goal very much. " " It is very powerful that our test measures the department and behaves, the order quantity has increased by 37%, reached the highest level since the beginning of 2001, the income increased by 25% compared with the same period of last year too. Department this open gross margin percentage up to 11%, ahead of time one up to two gross margin percentage of opening of figure quarter than expected. " This quarter, Angery realized the positive cash flow of the fourth quarter continuously. The end on the quarter when it is at this, it have cash and equivalent of 1,940 million dollar company,than before first quarter increase by 95 million dollars; Turnover is 91 days, reduce 16 days compared with the same period of last year; Should accept the goods realization of fund number 55 days, reduce 3 days compared with the same period of last year; 2,The cash of 6 million dollars is used and lower than 39 million the amount of dollar of depreciation level. Compared with second quarter, total revenue charges have been reduced by 22 million dollars. Look forward to the fourth quarter, Palestinian kindness is carried on one's shoulder or back and specially said: " We are very glad to see that test measuring and life sciences and continuation of the chemical analysis department increase. But at the same time, we saw semi-conductive products and tested the temporal stagnation of the business, may not be until 2005 fiscal years strong. " " In a word, we are very confident in expecting in fourth quarter before this. It is estimated the income in the fourth quarter will keep among between 1,850 million dollars and 1,950 million dollars, the profit per share keeps among between 0.3 dollars and 0.35 dollars. "

#An JieLun #the third quarter #financial report

Advanced electric current detection circuit and principle

Gao Duan / low-end examines the current circuit

Low-end examine to examine, flow the intersection of resistance and series connection get place (picture 1) current circuit ,And it is that the series connection to the high voltage terminal (Fig. 2) to examine examining and flowing the resistance of current circuit in high side . Two kinds of methods each have a characteristic: Low-end examine stream mode increase extra resistance in the intersection of ground and the intersection of line and loop, high side examine stream mode want, punish greater common mode signal.

Low-end that 1 Fig. show examine, flow operational amplifier regard ground level as reference level, examine, flow resistance answer the straight phase terminal. The common mode signal range in the input signal of operational amplifier is: (GNDRSENSE*ILOAD) . Though low-end examine current circuit to be simple, have several fault state whether low-end examine whom current circuit can not be found, this will make load in the dangerous situation, examine the current circuit and can solve these problems with high side.

High side examine current circuit connect the intersection of power and end to directly, can detect subsequent any trouble of loop and take the corresponding protection measure, especially suitable for the automatically controlled application, because usually adopt the ground for reference of chassis in the circuit of application.

Examine the current circuit in traditional high side

Traditional high side / low-end examine stream mode, have, realize scheme is most because of discrete or half discrete component circuit while being many kinds of. Examine the current circuit to usually need to use an accurate operational amplifier and electric capacity of some accurate resistance in high side, most frequently used high side examine current circuit adopt the intersection of differentiating and operational amplifier do gain amplification and signal level from shifting in high side to consult place (picture 3) :

VO=IRS*RS; R1 =R2 =R3 =R4

This scheme has already been applied to the real system extensively, but three main shortcomings that this circuit exists:

1)Input resistance is relatively lower, equal R1;

2)Generally there is greater magnitude of error in the input resistance of the input end;

3)Require match degree of the resistance to be high, in order to guarantee acceptable CMRR. Any resistance will make CMRR reduce to 46dB when producing 1% of the changes; 0.1% of the changes make CMRR reach 66dB, 0.01% of the changes make CMRR reach 86dB. Advanced electric current measure, need higher the intersection of measurement and skill, this promote high side examine, shed development of integrated circuit. The electric current detection technique of low-end seems that there is not corresponding progress.

Adopt the operational amplifier of the integrated differentiating to realize the advanced electric current is measured

It is more usable to adopt the differentiating and transport and put into the circuit that the advanced electric current of conduct measures, because introduced a variety of integrated circuit solutions recently. Include an accurate operational amplifier and match the resistance of one degree of a very good ones within the integrated circuit, CMRR is up to about 105dB. MAX4198/99 is such products, its CMRR is 110dB, the gain error is superior to 0.01%, and adopt 8 pins mMAX of the small volume to capsulate.

Examine and include finishing all functional units that the advanced electric current measures within the current circuit in specialized high side, can find advanced electric current, and the one that offer and is proportional to it, Tap taking ground level as point of reference under the common mode voltage up to 32V. Application needing to do precision measure and control to the electric current, such as power management and battery charge control, suitable for adopting this kind of scheme.

It examine high side of MAXIM by one that flow and use at operational amplifier if you can't examine, resistance last high side in power after flowing and between power input end of detection circuit, examine, flow resistance place high side on add extra impedance to ground wire loop, the technology raise whole characteristic of circuit and simplify the intersection of cloth and editions of requirement.

It is a series of and two-way for MAXIM to introduce and unidirectional current measure IC, some bidirectional current measure IC to be built-in to examine, shed resistance, can find, flow into or flow out, examine into magnitude of electric current of circuit and instruct the pin to reveal the current direction through a polarity. The gain to noise temperature ratio adjustable electric current measures IC, fixed gain (+20V/V, +50V/V, or +100V/V) The electric current finds the chip or electric current of fixed gain including single pair of comparator measures IC, adopt the small volume to capsulate, like SOT23, satisfiable application to that the size requirement is harsh. Advanced electric current detection circuit that Fig. 4 is formed with MAX4173.

The output voltage and relational expression of resistance of examining flowing are in the picture:

Vo =RGD*(Iload*Rsense) /RG1) *It is a image current coefficient that the b type hits b

Can it simplifies to be further while being aboving: Vo=Gain*Rsense*Iload; Gain=b*RGD/RG1 Gain is: 20(MAX4173T) ,50(MAX4173F) ,100(MAX4173H) .

Can be found out through the above-mentioned formulae, it determines (representative value & gt that CMRR is integrated the craft which examines the current circuit by inside; 90dB) ,No longer influenced by external resistance.

There are the following advantages to adopt and integrate and examine the current circuit:

1,The conformance of the device is good 2,Fairly good temp drift characteristic 3,Small 4,Low power consumption 5,Easy to use

Choose to examine flowing the attentive matters of resistance

Examining and flowing the resistance RSENSE should be chosen according to several following principles:

1,Voltage loss: Examine, flow electric resistance value pass conference, cause mains voltage reduce with number value of IR. In order to reduce the voltage loss, should choose examining and flowing the resistance of small resistance-value.

2,Precision: Greater survey accuracy that resistance can obtain more high trickle of examining flowing. This is because the larger the voltage examined and flowed on resistance is, the offset voltage of operational amplifier and influence of the input bias current are relative small.

#Advanced electric current #detection circuit #MAX4173

IPTV (online TV) The system opens the technical introduction

Foreword

IPTV business regards it as the cathode ray tube terminal to have the most extensive audience's televisions, has merged the business characteristics of Cable network and IP network, offer broadcasting television, video on demand, TV to user and answer interdynamic multimedia services such as watching and information having a look around, interdynamic game,etc., considered to be broadcasting (Triple-Play) trebly Embodiment. IPTV, while bringing user brand-new TV to experience, it was the development of an industry that was driven, thought to have good development prospects by the industry, have received the extensive concern.

At present, China Telecom the intersection of fixed net and through hold IPTV, run the intersection of Shanghai and gentle wide the intersection of media and the intersection of group,etc. and content provider of license plate, cooperate operator, exploring the operation mode of IPTV business actively, and the one that passed business is commercial among a small circle, make great efforts to excavate the user's needs, develop business and content of pertinence, try to find out trebly and broadcast the challenge of operator's Business Process of traditional telecommunications of the business. However, because of various reasons such as IPTV business supervising and industry chain maturing status, IPTV business still at an early stage of development in China at present. If IPTV business wants the scale to develop, must break the closeness of IPTV end-to-end system at first, it influences one of the main bottlenecks of development of IPTV business scale that IPTV platform is not opened, the canonicalization to become at present. Though Ministry of Information Industry, China Telecom,etc. are promoting the canonicalization of IPTV end-to-end system actively, and made IPTV sector standard and enterprise's standard of the series, but IPTV system provider is in consideration of various factors, not offering the standardized open platform at present, this causes the operator while developing IPTV business, the following problems exist:

Set-box and IPTV platform of different manufacturers can't be interflowed, the products maturing status of set-box is not high, the set-box is difficult to produce to form scale effect and competition situation, make IPTV cost of sales remain high;

Because IPTV platform is not opened and not the canonicalization, make the difficulty of business development of appreciation based on IPTV platform great, slow, unfavorable to the fast leading-in of all kinds of IPTV value-added services of meeting the user's needs, can't cause the same value-added service the difference in the range of China is duplicated and transplanted inside the province;

The closeness of IPTV platform, cause the operator to be difficult and introduce all kinds of, IPTV terminal stations of various grades too, difficult in order to develop the activity of directing against the marketing of different users effectively;

Because communication protocol getting privately owned, unfavorable to the operator and dispose the unitary IPTV quality monitoring system in transporting and linking, monitor to the intersection of IPTV and the intersection of end and service quality to reach end while being difficult;

Because IPTV and canonicalization in closeness of system, cause, can't carry on interconnection between the many of system of manufacturer also, the system resource of media service flows, storing at the same time etc. are unable to share, increase the systematic construction cost, the business is very inconvenient in management.

So, for the long-term ordered development of IPTV business, need to set up open IPTV system urgently, make different IPTV operation platforms and terminal stations can realize interconnection, helps the operator introduce and dispose the value-added service fast. This text has described technology such as the system framework of IPTV system development, key interface in detail in terms of operator, and introduced China Telecom and opened respect progress and planned in IPTV system in the future.

IPTV system opens framework and interface

The open completeness of the slave system and thinking of business development in future are considered, open IPTV system framework and relevant interface. This text, in order to describe that convenient, has marked each interface respectively.

Can be found out from Fig. 1, IPTV standardized system framework can be divided into a set-box, independent module such as IPTV service management system, basic professional ability system, value-added operation system, content management platform, operation support system, involve 8 interface together between the every module, every function of interface as described below respectively.

A: The access between set-box and service management system authorizes the interface, using for the starting up inserting and authorizing and business is initialized and navigation. Interface this correlated to business basic interface the most under all interface, it is operator that carry on the intersection of IPTV and key interface of business control too, mainly defined according to one's own business demand by the operator.

B: Interface between set-box, EPG service and flow media professional ability system, used for offering the professional ability based on that the browser realizes, it is the key interface realizing interconnection between IPTV traffic flow too.

C: The interface between set-box and C/S value-added professional ability system, is used for offering the professional ability based on that the customer end realizes. Because the value-added service is that the operator realizes with the difference main content of the digital television, so the interface of standardized C can help the operator to introduce the value-added service fast, significant for operator.

D: Carry on the interface of set-box management, is used for offering managerial ability such as terminal configuration, terminal controlling, terminal staging. Because the set-box is that users use the carriers of all business, and the quantity of the set-box is enormous, transport and link the high cost, the set-box supervisory function that so it is flexible and strong to offer, it is very important to transporting linking of the set-box.

E: Basic professional ability, value-added professional ability system and interface of the service management system, mainly realize the subscriber personality discerns and the business is authenticated. It is interface of a side of platform because of this interface, are correlated with different types of traffic.

F: Run the interface of support system and service management system, is used mainly in the transmission in information such as user's making, canceling, account information is submitted etc.. Because IPTV is one kind of the telecommunications service, this interface mainly continues to use the prior art.

G: The interface between management platform of content and service management system, is used mainly for serving information issue, business and is divided into information transfer.

H: The interface between management platform of content and professional ability system, for the issue of the business content, including programme source and metadata.

#IPTV #online TV #the set-box

CADENCE will host the third CADENCE the Asian-Pacific area technological itinerant exhibition ( ACTS 2004)

CADENCE design system company claims to host the third CADENCE the Asian-Pacific area technological itinerant exhibition ( ACTS 2004 ) . This itinerant exhibition will be held on August 24, finish on September 3, last 11 days, mainly centre on electronic design automation (EDA) Industry. The first seminar since held in 2002, this one - day serial seminars attracted 3500 multidigit designing experts in Asian-Pacific area. The theme of the seminar is this year " Break through (Break on Through) " ,Have emphasized Cadence commitments to customer. By using the leading EDA technology of Cadence Company, help the customer to get rid of the most arduous difficulty met in the design. On the technological itinerant exhibition of 2004 CADENCE the Asian-Pacific area, the people from various circles will know such strategies as the comprehensive technological platform of Cadence, engineering service, strategy partner and industry cooperate, and how to help its customer to succeed in making cashier rice electronic product and obtaining incomes. ACTS 2004 seminar will be in Seoul of South Korea separately on August 24, August 26, August 31, September 3, Hsinchu of Taiwan, Shanghai and Beijing hold. Except watching the new technology that Cadence was developed recently showing, the personnel present have chances to exchange with the technologist of Cadence Company. This itinerant exhibition also offers to Cadence cooperative partner and his customer and discusses business and technology cooperative chance in the future. The official sponsor of the technological itinerant exhibition of CADENCE the Asian-Pacific area includes Hewlett-Packard (Hewlett-Packard) in the current year , EDN Asian magazine office, CoWare Company, American International Business Machines Corporation (IBM) , Japanese Fujitsu Limited and numeral science and technology Co., Ltd.. Mr. He George, director of Cadence market of Asian-Pacific area, shows, " success based on first two seminars is held, the technological itinerant exhibition of CADENCE the Asian-Pacific area has already developed into a technological gala that can't miss facing electronic design automation industry. Cadence promises to offer the most advanced technological platform to customer, helps it to clear away and design the obstacle, raise design efficiency, thus make success that the electron is designed. "

#CADENCE #on the third #the technological itinerant exhibition of CADENCE the Asian-Pacific area

The field bus employs the development trend of the project

First, give play to the total collinear advantage of scene through application technology

The superiority of the on-the-spot bus system is numerous. Should stress first the field bus reduces systematic cost of investment and advantage of reducing the running cost. This is very important, there is this basic thought, while carrying on choice and network design of the bus line type, there is a clear direction. But always this collinear advantage of scene could be given play to, use the field bus, gives full play to the latent energy of it and has something to do with the user possibly.

Second, make with typological field bus up, favorable to to lower costs

Different kinds of scene always collinear to compare, choose different bus line to lower the system cost to different situations to the maximum extent briefly; Location type bus line (Sensor Bus or Bit-Bus) : AS-I, the simple bus line of byte of I/0 module (Device Bus or Byte-Bus) of switch amount : Device Net, switch quantity and analog quantity I/0 module, are suitable for PLC employing or proceeding control and employ the bus line of data flow (Ful l Function Bus or Block-Bus) : Foundation Fieldb us, have strange the intersection of switch and quantity and apparatus, I/O of analog quantity, of functional block, suitable for course control bit type total collinear ability very limited, it is impossible to use location type bus line as the information transmission body of the large scale system. But its advantage in cost, the speed,etc. is irreplacable for other high-level bus lines. So it often uses with other bus lines in admixture.

Users may worry, will use many kinds of field buses and will make the operation, management of the overall system complicated. Some general man-machine interface software now of reality, support many kinds of field buses, so reach this floor of the man-machine interface, different total collinear differences are not big for user.

Third, the total collinear essence of scene is the information processing scene

A control system, no matter adopt DCS or and adopt the field bus, information volume that the system needs dealing with is much equally at least. In fact, after adopting field bus and intelligent instrument, can be from receiving more diagnosis, maintenance and administrative information live. The information volume of the on-the-spot bus system has increased greatly, but the cable of transmitted information has been reduced greatly. This demands to improve ability of the transmitted information of the cable, transmission of reduction redundant information greatly on one hand. On the other hand should let a large amount of information be finished dealing with in situ on the scene, come and go to reduce the information between scene and control room.

If only construe as saving field bus several cables, it is the essence not understanding it. The scene of information processing is intelligent instrument and field bus grail, also a technical sign of different and other compunication of the field bus.

Fourth, design of network

The general control system has a question of network designs too, the focal point of the network design is to consider the communication network and input, output the arrangement of the cable network from physical shape. Mention a lot of scene total collinear network linear in shape, node at the every a series of subnet section it counts to be limited above. Because the node on the subnet section is counted less, so except considering physics of the network is fixed up, also consider reducing coming and going and transmitting in the network of information.

It is an important principle of network design and systematic configuration in an on-the-spot bus system that the ones that reduce information are transmitted. Reduce information to come and go and can often bring the advantage which improve systematic response time. So should have priority mutual the intersection of information exchange amount and old node when the network design, put in the same branch. For example multiloop while regulating, the node of a regulation loop should try hard to put in the same branch.

Fifth, systematic configuration fool

Some on-the-spot instruments with field bus hold a lot of functional blocks now, though the homogeneous functional block of different products will differ on the characteristic slightly, is an objective reality that there are a lot of functions and is similiar to the situation in the functional block on a network branch. Choose the functional block on the on-the-spot instrument of any one, it is the problem that the systematic configuration should be solved. The principle of considering this question is, try hard to come and go to reduce the information on the bus line. Generally can choose functional block at the related to this function the intersection of information output and the instrument at most.

The configuration of the on-the-spot bus system is more complicated at present, there are many parameters of configuration, the relation between every parameter is more complicated, very familiar with the field bus, it is very difficult to set up the system to the optimum behavior. Obviously, the masses of users are unsatisfied with this kind of state. Too hard, in order to make systematic the intersection of configuration and " the fool " progressively on-the-spot manufacturer of bus system .

#Field bus #location type bus line #PLC

" the ring tones of the music " The listing VMD technology of the mobile phone shows up prominently

One is launched in Beijing on August 11 on the basis of brand-new VMD technology, VMD TOP program that is devoted to making the multimedia application alliance of the mobile phone. The little electronics corporation of the star of China has participated in partial work such as the key algorithm, software, chip actively, and appear in this plan in the capacity of key technological provider. VMD technology is the multimedia technology of new generation which is for the mobile phone platform, this technology can be used for producing the ring tones, music, Karaoka disc, cartoon, mobile television, flow media to broadcast etc., offer the perfect multimedia to cellphone subscriber to experience. The key technological aspect that this sign moved the multimedia application industry chain has already made the critical break-through, the insider thinks it will become the new trend of the mobile phone of the multimedia in the future. Take application of ring tones as examples, MIDI result of broadcast that generally adopt at present is limited by player or synthesizer, because the document size is minor and unable to imbed voice, water sound (wave or mp3) Wait for the sound of the nature, the expression is insufficient; And can keep the sounds of nature and musical instrument in WAVE and MP3 file format. But MP3 needs decoding fast, WAVE needs format conversion. VMD file format of new generation of VMD technical support is a file format of the multimedia of incorporating picture, sound and characters into an organic whole suitable for the mobile phone platform, can support many kinds of carrier, not only it is easy to expand but also its document size produced is low. VMD powerful tools cooperate with the chip and realize the abundant result, what deserves to be mentioned is VMD technology can support MP3, the picture (JPEG, BMP, GIF most ,Word information ( Such as lyrics) ,Self-defining the musical quality storehouse ' Such as every national clan musical instrument) When. Adopt VMD technology to compress MIDI data, it is only about 1/2 of the source document. This technology is used mainly in the standard of the multimedia chip of the mobile phone, it is simple and apt to use to make software it, has raised the efficiency of composing music greatly, such as producing Karaoka disc, set up the control pattern of LED and motor in the ring sound, use the self-defining musical instrument storehouse in the ring sound ' Erhu, dulcimer, zither) When. The little digital hypermedia chip based on VMD technological development of electronics corporation of star of China lets the cellphone subscriber experience the brand-new movement multimedia is experienced. Since August, use " The ring tones of the music " The mobile phone of the chip will go on the market successively, the masses of users not only can have different styles in mobile phone of the new the most, sound effect is sheer " The ring tones of the music " ,And can download VMD of the heart appearance from network " The ring tones of the music " ,Represent dazzling and most abundant ringing sound of cell phone of expression most constantly. The increase that what 3G brought to mobile communication trade is not only the bandwidth, but also the promoting by a wide margin of handling capacity at the same time, so the research and development of the multimedia application chip will become the core of the mobile phone industry gradually. Development and industrialization of the chip of the digital hypermedia, will promote the forming of figure 3C industry chains such as the multimedia communication industry chain of broadband, moving multimedia industry chain, digital camera industry chain, high definition TV industry chain,etc., drive emergence and development of the bulky figure 3C industry of the scale. Global the intersection of ringing sound of cell phone and the intersection of market and income reach 4,700 million 2008, and by 2006, the whole world move music serve users, up to 700 million people. The key technical introduction of multimedia application of the mobile phone not merely can bring the brand-new multimedia to enjoy for the masses of cellphone subscribers, at the same time, also each link on the relevant industry chain, if telecommunication operator, mobile phone manufacturer, content and multimedia application provision of the service provider strengthen strong support and broader development space even more.

#The mobile phone designs the special topic #the ring tones of the music #VMD technology

Development research of the programmable automatic controller

The automatic technology is fast growing. In an era improving fast. From semi-conductive to the consumption electronic product, and then go to many kinds of different industrial fields such as car, aviation manufacturing industry and light industry and thing prevailing industry to face day by day fierce the whole world compete for the pressure, they need further lowering costs, shortening products production cycle, and can finish the update of the products rapidly. And it is to solve this line of problem effective means to adopt the latest automatic technology.

First, PAC accuses of achieving technical characteristic and advantage

Because PC or PLC solution is not very overall, as to complicated application. The engineer often wants and controls manufacturer's close cooperation to develop the new product. According to the needs of multi-type of PLC users. And the demand for information of manufacturing industry manufacturer, design the new control device that develops to combine the characteristics of PLC and PC together best. Including main function and expanded control ability of PLC, and PC a BASE offers the target, opens function of data format and network capability,etc. while controlling. Its marked feature is a multe-control task and the control is guided and piled centralizedly; It is it traditional to inherit P than advantage( grades industrial, stability, high reliability) ; Have merged flexibility and handling capacity of the taking the place of machine. Industry's analysts call these apparatuses programmable automatic controller or PAC.

The definition of PAC is as follows

(1)PAC possesses a plurality of specialized functionality, very real view includes the logic sum order accuses of the functions of side, motion control, drive control and proceeding control on a platform; (2)PAC has developing platform of the unified satisfiable multi-specialized control request, adopt share variable label and unitary database; (3)The software of PAc can be offered according to the design five metals of the procedure or processing course | Tool; (4)Guiding PAC has the open one, modularized to stop department's structure, are suitable for the operation from factory automation to industrial unit; (5)Various industrial standards of adopting de facto network interface, programming language to breed, safe etc.. Can realize data interchange between the systems of heterotype and isomerism. Compared with traditional control technique, help C technology to mainly have the following advantages.

1,Adopt the simplex control device

PAC has simplex control devices, it can be used for handling the simulation UO of digital sum, has motion vision function and modularization instrument | Instrument. So needn't buy other control devices as functions such as the vision of user need,etc..

2,It is controlled that advanced

Advanced to control the control technique such as fuzzy logic sum neural network to not merely need strong floating point processor, need, take a large amount of the intersection of memory and PAC all right the intersection of C and platform can meet terms these right away.

3,Real-time analysis

PAC can gather the data from imitating or figure UO passway in the real time and place, and carry on real time analysis to these data, thus can measure the fault state effectively. Operation conditions as carry on eye track once of the steps and the vibration analysis measure the machine.

4,Safety

What the data packet that PLC is being sent through Ethernet is not encrypted so its well is not suitable for use in preventing a hacker from entering beautifully. The data packet that and PAC sends can be encrypted. Though this to need factor that consider most at present, safety must live, can become first important future.

5,Determinacy application of many kinds of speeds

PLC to can only run at the stationary speed. So it can't finish every task independently with different speed. And the operating system of running on PAC has such a characteristic, it can carry on concurrent processing.

6,Flexible memory function

PAC has a piece of module, but the memory function of the staging, allow user's actuating system in order to meet the present application requirement and can carry on certain expansion in future. And PIJ only has stationary memory capacity two times.

7,Machine vision

Limited by spreading the thing speed in data. Can't offer the visual function on PLC, this platform. Can examine the products defect and wrong that side-exporting utilizes the traditional very difficult side amount of method to come out in machine vision of PAC.

8,Award high productivity

And comprehensive platform of engineering development allow, develop, implement and move the project engineering fast; And, because of its opening and flexibility, guaranteeing control point and bath are done and seamless link between enterprise's operation system. Have optimized the procedure of the factory, has raised production efficiency.

9,Have reduced and operated the cost

Because of using working standard framework and network, make users choose different system components from the angle of cost, but not exclusive products and technology; Only require users to train under the environment of unitary platform and development, and does not need to study many kinds of specialized environments; Have offered a jointless migration path to user, has protected user's investment in 1/0 of the and application and development.

Second, PAC technical development trend

With the need of the market, PAC technology will further develop in several following directions within future a few years.

1,Diversification of the apparatus specification

Produce the needing of the state actually in order to satisfy various, diversified development trends will appear in the specification of the prison C. In the production environment of its body. PAC choosing the appropriate control system to require, helps to lower costs.

2,Prop up specially more control function

At present, PAC the sixth of the twelve Earthly Branches integrated the logic, movement, proceeding control contourgraph function into simplex platform. And in the future, PAC will further merge more functions, for example the consideration of the safety, batch processing,etc.. Safety its become one considered to take Pu ask for when information is more and more used widely.

3,The commerce is the integrating of Yao

In order to realize the genuine real-time nature, the automatic equipment supplier will continue establishing the connecting channel of the business system within PAC without depending on the miscellaneous interface unit. The embedded manufacturing execution system (MES) PAC Some attribute. For example: The setting-up of the standard interface, it will help to solve the connection problem between control layer and administration and supervision authorities better.

#Programmable #automatic controller #PAC accuses of creating

Insult and specially introduce and can be used in the power monitor units of No. 6 with a plurality of power close sealed type systems

Insult the special company and put out LTC2908, it can be used for power monitor units of No. 6 with a plurality of power close sealed type systems by one. This power monitor units of No. 6 adopt small-scale SOT-23 and DFN to capsulate, besides traditional 5V or 3.3V logic power, it has also offered the multi-channel low voltage source rail for system of new most generation. LTC2908 permits meticulous and monitors accurately, guarantees to keep resetting the end as the low level when the mains voltage is low to 500mV to importing, thus has guaranteed resetting operation of the new low-voltage processor. This device has 1.5% of the strict threshold accuracy grade in - 40 degrees of C to the whole operating temperature range of + 85 degrees of C, thus make the designer realize an ultra high precision, because the one that can guarantee in this way the error-free is touched off resets operation reliably. The above-mentioned characteristic of LTC2908 makes it become desk calculating machine and notebook computer type computer, many voltage, ideal solution of the high density system such as the mere network system and Wireless Base Station. LTC2908 has two adjustable input, the threshold that the threshold that a nominal value is 0.5V and four are suitable for. LTC2908-A1 can choose to monitor 5V, 3.3V, 2.5V, 1.8V, ADJ1 and ADJ2 voltage, and LTC2908-B1 monitor can monitor 3.3V, 2.5V, 1.8V, 1.5V, ADJ1 and ADJ2 voltage. LTC2908 adopts 8 of saving in space to guide the foot SOT-23 and 2mm * 3mm DFN to capsulate. This integrated circuit can work on the commercial and industry temperature range, regard 1000 as the unit to buy in batches, each slice of trigger price is 2.50 dollars. About characteristic: " The ultra low-voltage is reset: Can guarantee VCC =0.5V " Monitor at the same time No. 6 is input " The threshold accuracy grade guaranteed: Monitored voltage within the range of operating temperature ± 1.5% " Automatic selection of internal VCC " Immunity of power interference " 200ms resets time delay " Tabular 8 guides the foot SOT-23 and (2mm * 3mm) DFN capsulates

#Insult specially #the close sealed type of the power #the power monitor units of No. 6

Flying promises the leading leading position that the semiconductor expands the Chinese market

Flying and promising the semi-conductive company continues expanding its commitments to Chinese market, set up the global power resource centre in Shanghai and Shenzhen (Global Power Resource Center) ,And increase staff number and operational capacities making facilities in Suzhou. Fly and promise semi-conductive the Asian-Pacific area president and concurrently managing director Guo YuLiang and claim: " The Chinese market flies and promises the key part of the semi-conductive global strategy, the plan which the company implements, including global the intersection of power and the intersection of resource and centre and Suzhou make facility, know, show we to the commitment of district. And, we and Changhong electric apparatus have set up the laboratory of United Technologies recently, the message display flies and promises the semiconductor to further deepen and expand the progress of the market in this complicatedly and fast. " Flying and promising the expanded global power resource centre of the semiconductor has professional technique and apparatus, can offer the overall electron for master terminal product market of Asia and employ the power to design the solution, including consuming the electron, calculation and telecommunication system, and the modern electronic device uses the power. Spreading all over the global power resource centres from all parts of the world can meet car, industry, consume the electron, ultra and walkie and applied power design requirement of calculation. Guo YuLiang claims: " Can offer the overall power to design the solution in the global power resource centre, help the customer to improve the properties of product, reduce the component number, cut down the cost of stock, shorten the listing time of products and promote and design the functionality. Flying and promising the achievement in the global power resource centre of the semiconductor includes counting the component of the colour television set power from 200 to reduce to 60; Reduce the circuit board space of the car spark control system by 60%, and realize the TV machine of the liquid crystal display (LCD TV) Ultra very thin power design. " Shenzhen and global power resource centre of Shanghai solve, can be by handing over designing to two weeks quickly, offer overall project solution, including demonstrating board, material form to customer Detailed information, and include solo of Orcad and GerberEx file designs, let the customer integrate in one's own solution and application note. There is the resource centre of six pieces of power in the whole world to fly and promise the semiconductor, four lie in Asia area, respectively for Shanghai, Shenzhen, Taibei and rich Sichuan, South Korea of China. Fly, promise semiconductor, increase Suzhou their, assemble and test the intersection of staff and number of facility actively, improve operational capacities fast, automize in the concurrent implementation warehouse. The facilities of Suzhou were launched in the autumn of 2003, employed 570 staff at first, had nowadays already increased to nearly 820. Estimate staff's number will reach about 2,000 by 2005. After the second stage is finished, it is estimated there will be 3,500 staff in the factory. Guo YuLiang claims: " On the other hand, fly and promise the semiconductor and pay much attention to us to the responsibility of enterprise that the country shoulders too. While China develops into one of the tournament hosts of main sport of the world, flying promises the semiconductor and is proud a component force can happening. This is essential for us to march toward Beijing 2008 Olympic Games, China will host the world-class grand tournament then. Flying and promising the semiconductor will attend Asia Cup and Shanghai F1 car grand prix of Beijing, these two important tournaments indicate China participate in promoting the international match activity for the first time. Success of Asia Cup of Beijing and F1 car grand prix that will hold in Shanghai soon of this summer, will show clearly to the world China has already mounted the world arena. " He claims continuously: " Is it universally acknowledged The Power Franchise to fly and promise the semiconductor? Products expert of the power. The sales amount above 70% of company comes from Asia area, our occupation rate in Asia power product market is twice of the maximum rival's. According to report of the research institution Gartner of the market, in the field of power management chip, flew and promised the occupation rate on the market of Asia of the semiconductor to call precededding in 2003; The simulation IC market ranks the third in Asia, but rank the first place in a contest on the market of Chinese power semiconductor. We plan it through establishing the cooperation relation of strategy with the customer, for example with union product development laboratory of Changhong and and joint research and development item of the Chinese key university, expand the global power resource centre; Set up new marketing channel agreement; And expand operational capacities, strengthen our leading leading position actively. " www.fairchildsemi.com

#Flying promises the semiconductor #the Chinese market #leading leading position

Dezhou instrument introduces the most high-performance high integration density clock multiplier of industry

A few days ago, Dezhou instrument introduced the phase locking ring (PLL) on having three The high integration density regular IC of the assembly of the electric-wave filter, it has optimal characteristic of the industry at present. The framework of this new clock multiplier does not need to connect the assembly to support PLL structure, thus not only has reduced the overall system cost, but also saved the board-level space notably. Because cycle shakes extremely low, and have ability to produce much clock rate, so support this device technology to be very suitable for game system, DVD broadcaster / consumption electronic products such as CD writer, digital television and set-box,etc.. (If want to understand more information, please visit www.ti.com/sc04169. ) Through 54 MHz system clock, CDC5806 can be produced video, audio frequency, CPU, USB and walkie memory clock by the single device. Three PLLs can produce various output frequency from the system clock. Loop filter and internal antireaction adopt the necessity of the external assembly on slice. CDC5806 adopts RF Si-Ge craft of TI to develop, have realized the clock is assigned and low the extremely low peak shake by peak cycle to shake and low to 150 psec. It contributes to reducing electromagnetic disturbance to adopt the future clock that this craft develops and integrate (EMI) Function,such as variable spread spectrum definite time (SSC) When. Variable SSC still enables designer to carry on the fine setting to its design, carries on the test of various standard SSC in the system. TI technology still keeps the excellent PLL frequency isolating while realizing these functions and integrating. CDC5806 has the following key characteristics: " Allow the clock input of the single end LVCMOS; " Use the generable much output frequency of systematic clock input of 54.000 MHz; " It is assigned and low to be used in the clock and shake; " Working voltage is 3.3V form power; " The following generable clock: OVIDCLK 74.175824 MHz/54 MHz (tape is buffered) ; oAUDCLK 16.9344 MHz/12.288 MHz; oCPUCLK 64 MHz; oUSBCLK 48 MHz; oSPCLK 32 MHz; oMSCLK 38.4 MHz/19.2 MHz/12 MHz; " Integrate PLL electric-wave filter assembly; " The characteristic that the extremely low peak shakes by peak cycle, it is 150 psec to be the lowest; " The temperature range of industry is lain between - between 85 C; Stock situation CDC5806 adopts 20 to guide the foot TSSOP to capsulate, has already begun to supply, can authorize the retail trader to order through TI and at present. When the batch is a thousand sets, the suggested retail price is 2.15 dollars. www.ti.com/clocks

#The instrument of Dezhou #high integration density #the multiplier of the clock

The 32-bit microcomputer high-performance one-chip computer realizes the connection function (as many figues show) easily

Microchip (the little core scientific & technical corporation of U.S.A.) In 80 MHz 32-bit microcomputer PIC32 one-chip computer (MCU) recently Introduce 3 brand-new serial one-chip computers on the combined successful foundation of the products, offer and is up to 128 KB RAM and extensive connection choice; Including 10/100 Mbps Ethernet, two CAN2.0b control devices, USB masters / slaves and OTG, and 6 UARTs, 5 I2Cs and 4 SPI ports. In the new product makes the embedded designer apter to put the connection function into employing.

"Brand-new series PIC32MX5/6/7 employed designing for the intensity of the data specially. The designer can get adequate RAM up to 128 KB, simultaneously using Ethernet, USB and CAN dashpot. Integrated Ethernet, CAN and USB module have Built-in: DMA (Direct Memory Access) Interface, can maximize the throughput of the data, " Microchip high-performance one-chip computer department's executive vice president Sumit Mitra shows, the 32-bit microcomputers serial MCU introduced newly all integrate data processing, high-performance operation and connectivity on a device. Cooperate the intersection of DMA and engine that develop by Microchip, utilize the intersection of MIPS and the intersection of principal line and characteristic of framework, make its also can use graphics processing employ. High-capacity RAM of 128KB has avoided the demand for the external storage device. Synthesize the above characteristic, it is connective to combine with the high one, make the products suitable for fields such as scanning, digital controlling, UI interface control of the wireless report controller, intellectual meter reading system of safety protection of bar code,etc..

Fig. 1, Microchip high-performance one-chip computer department's executive vice president Sumit Mitra

PIC32 has already, CAN2.0b control device apt to use increased flexibly, can use the system RAM to store up to 1024 pieces of news in 32 dashpots, make the designer adjust CAN communication scheme in order to adapt to his application easily. Integrated 100 Mbps Ethernet MAC uses the interface of canonial RMII/MIII in the industry, and low-cost goods physical interface chip (PHY) Connect. In addition each one-chip computer have one the only one, factory preprogrammed Ethernet MAC address, thus simplify the manufacture process.

Have covered the whole range of PIC MCU because of developing instrument, USB protocol stack and TCP/IP protocol stack, so carry on software transportation very simple and easy to do in 600 varied 8, 16 and 32-bit microcomputer PIC one-chip computer product mix of Microchip. In addition, new series PIC32MX5/6/7 and Off-The-Shelf PIC32 and 16 PIC24F USB MCU series pins are compatible. Microchip offers cost-free software resource and intact source code, in order to further carry on software development easily, accelerate the listing time of products and reduce the total cost. The available software includes two TCP/IP software stacks, and is used in USB master and slave, advanced encryption standard (AES) , the software library of other numerous software products such as a plurality of filing systems, advanced figure, audio frequency.

Sumit Mitra says, " series PIC32MX5/6/7 orientate as emphasizing computational capability and connective standard power consumption employ the scene, so does not offer the low power consumption mode. The new product combines the outstanding characteristic of PIC32 with new connection function and all integrated RAM, can operate a plurality of software stacks easily, realize the connected sum user interface application of innovation at lower price and more succinct design. Basic reference and famous Dhrystone score in the basic reference, PIC32 continues demonstrating the optimum performance in score by EEMBC CoreMark that the near future announce. "

Fig. 2, PIC32MX5/6/7 series structure chart

#One-chip computer #Microchip #PIC32 #DMA

TDI offers the embedded USB host computer solution for multi-functional integrative apparatus of a new generation of Hewlett-Packard

A few days ago, TDI announces USBLink Host software of its UHC124 control device and SoftConnex will be used for supporting Hewlett-Packard PSC1315 to print, scan, copy PictVridge agreement of the multi-functional integrated machine. There is support of PictBridge, Hewlett-Packard PSC1315 multi-functional integrated machine can print the picture from the digital camera directly, do not need to use the computer. Hewlett-Packard PSC1315 multi-functional integrated machine will be regarded as USB host computer and worked, the digital camera becomes the peripheral device of USB instead. " TDI has been absorbed in USB solution of interconnection of peripheral device all the time " ,TDI marketing executive vice president Mike HOLT says, " The embedded USB solution of TDI can be applied to the top polar printing unit of the world such as Hewlett-Packard, we feel very proud, it means the market is very vigorous to advanced printing connecting the technological demand, and further proved USB of TDI connects the leading position in the industry of technology. " " We are very glad TDI offer PicBridge compatible function for Hewlett-Packard PSC1315 multi-functional integrated machine, " Hewlett-Packard's image and printing group's integrated machine executive vice president and concurrently general manager Philip C. Schultz says, " Become the mainstream with the digital technique day by day, Hewlett-Packard will offer more choices and facilities, the omnidirection preferably offered to consumer is taken a photograph of and experienced. The intersection of USB and technology and overall systematic embedded platform of TDI offer very fine the intersection of USB and solution to us. USB host computer solution of TDI includes hardware and software two constituent elements. The intersection of hardware and part UHC124, this it is one that suitable for low-cost four 2.0 the intersection of host computer and control device, USB of port, of embedded sysstem very. Through utilizing a simple MCU and 8 data interface, the developer can be in the UHC124 relaxed design any CISC or RISC microprocessor, microcontroller or digital signal processor (DSPs) . 64 of it acicular to wrap up and unique characteristic can equilibrate the intersection of USB and the intersection of data input-output and summation and low utility of CPU, this makes USB host computer suitable for various embedding apparatuses. UHC124 has data buffer of 2k, this makes it support all 4 kinds of USB to transmit the type and maximize the total amount of USB data input-output too. The software part of USB host computer solution of TransDimension is SoftConnex USBLink Host heap, it is driven layer, USB protocol layer and pieces of module chassis to make up by top management. Top management drives layer to be responsible for being intact and driving the main control unit at a high speed, the protocol layer calculates USB apparatus and stimulates the automatic configuration environment together with run-time system of the host computer when USB supports the ancillary equipment. Like complicated USB apparatus including diversified dispositions, interface and selective apparatus, it supports all USB data transmission types. USBLink Host drive is responsible for driving various typological apparatuses such as bluetooth base band module, the printer, digital camera and MP3 player. www.transdimension.com

#TDI #Hewlett-Packard #a new generation #multi-functional integrative apparatus #embedded #USB host computer

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