Operational Amplifiers

Q1: With a differential gain of 50,000 and a common-mode gain of 2, what is the common-mode rejection ratio?

A –87.9 dB

B –43.9 dB

C 43.9 dB

D 87.9 dB

ANS:D - 87.9 dB

20log(Ad/Ac)
=20log(50000/2)
=87.9 dB



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