#gain bandwidth

[knowledgeofsqaa-blog]

Gain Bandwidth

- amplifier bandwidth ωA = (Ri*ωT)/(Ri+Rf) - gain bandwidth product, AωA=ωT - ωb = ωa

[mcdonlv-blog]

Insult and specially introduce the miniature 50MHz CMOS operation amplifier

Insult the newest members LTC6244 of the special company who introduced the low-noise, high precision operation amplifier series CMOS. LTC6244 is a double-channel operation amplifier, and have 50MHz gain bandwidth that can challenge the accurate bipolar amplifier and input the characteristic, and offered the breakthrough characteristic that other amplifiers be unable to offer. It can guarantee within the range of whole industrial temperature the offset voltage of maximum is only 300uV, can compare favourably with the parameter of similar other amplifiers in 25 degrees of C.

LTC6244 has adopted the unique framework, has 8nV/ The low noise of Hz is and the input capacitance of 2.1pF alone. The extremely low input capacitance keeps high input impedance and low noise performance very crucial under the high frequency.

The design manager Dan Tran insulting the special company says: "The break-through characteristic of LTC6244 is CMOS amplifier in the past can't be realized. It can for large-scale photod small-scale and coupling amplifier, perfect integrating device and electric-wave filter,etc. various employ, offer most high the intersection of signal and definition across impedance and electric charge. " LTC6244 can be applied to systems such as the instrument, medical treatment, industry and communication,etc..

Besides minimum gain error of voltage, LTC6244 also has remarkable DC precision. Under C condition of 25 degrees, it has bias current of 1pA and low input offset voltage to 100uV. Bias and drift about and guarantee to be lower than 2.5uV / degree C, and the high voltage gain of 120dB can minimize fixed error. Under the largest 7.4mA low power electric current condition of each amplifier, 50MHz gain bandwidth and 40V/us transfer ratio of this amplifier make it extremely common and perfect in many kinds of application.

LTC6244 working mains voltage is low to come 2.8V and high to 12V (HV edition) ,And have rails to the output excursion of the rail. This pair of operation amplifiers adopt miniature 3mm x 3mm DFN to capsulate and 8 to guide the foot MSOP to capsulate, can fully meet application of commercial, industry and high-temperature range. Regard 1,000 as the unit to buy in batches, each slice of trigger price is 1.65 dollars.

Characteristic summary: LTC6244

l Low-noise: -en( 1kHz) : The representative value is 8nV/ Hz -in( 1kHz) : The representative value is 0.56 fA/ Hz l Low bias current: The representative value is 1pA l Low offset voltage: The maximum value in 25 degrees of C is 100uV, the maximum value in the whole temperature range is 300uV l It is low to bias drifting about: Maximum value is 2.5uV / degree C l Low input capacitance: It is 2.1pF under the mode of the common mode, it is 3.5pF at the time of difference subschema l Gain bandwidth product: The representative value is 50MHz l Transfer ratio: The representative value is 40V/us l The rail exports to the rail l The electric current of the power: Each amplifier is 7.4mA l The voltage range of power: -From 2.8V to 6V( LTC6244) -From 2.8V to 12V( LTC6244HV)