The high precision and impedance device amplifier composed of OPA2111

Published:2011/8/13 2:55:00 Author:qqtang | Keyword: high precision, device amplifier | From:SeekIC

In the figure is the high precision and impedance device amplifier composed of OPA2111. The voltage of the figured circuit can be magnified to Av=10*(1+2R2/R1)=1000. The rear stage is fixed with a difference amplifier circuit whose gain is 10 times, which can expand the input common mode voltage range to ±10V.



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