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Operational Amplifiers - Technical MCQs

Q1:

The common-mode voltage gain is

A smaller than differential voltage gain

B equal to voltage gain

C greater than differential voltage gain

D None of the above

ANS:A - smaller than differential voltage gain

As in CMRR both input and output are connected to the same input then ideally Vocm=0.

But as in practical, this is not possible so we get small value.