The amplifier circuit diagram using measuring amplifier circuit

Published:2011/5/17 1:42:00 Author:Ecco | Keyword: measuring , amplifier circuit | From:SeekIC

The top-level of the amplifier uses the measuring amplifier circuit, of which features are high precision operation, high input impedance, easy adjusting gain, excellent common-mode rejection ratio and low offset temperature drift and so on. A1, A2 in the circuit form the first sub-amplifier differential, A3 forms the sub-second differential amplifier circuit (subtraction circuit). R3 and R4, R5 form a deep negative voltage series feedback network. The first differential amplifier gain is 10 times. The second differential amplifier gain is 1 times. That the total gain of this circuit is 10 times. Measuring amplifier is connected with a single-ended input, double-ended output.



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