The equipment amplifier with the function of expanding common mode range

Published:2011/8/23 22:40:00 Author:qqtang | Keyword: equipment amplifier, common mode range | From:SeekIC

In the figure is the equipment amplifier with the function of expanding common mode range. In the circuit, A1, A2 and A4 are composed of the high-precision equipment amplifier INA10 or INA102. Seeing from the figure, the magnifying multiple of A1, A2 and A3 is 100, the rear stage amplifier is a high-precision unit gain amplifier INA105, the connection method of the amplifier is non-inverting input and follower output, i.e the 4 resistors in the circuit are in parallel connection respectively. In figure (b) is the internal structure of INA101.



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