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What is the common mode rejection ratio of an operational amplifier which has common mode gain=0.5 and differential gain=1200?

What is the common mode rejection ratio of an operational amplifier which has common mode gain=0.5 and differential gain=1200? Correct Answer 2400

GiveCommon mode gain=0.5 Differential gain=1200 Common mode rejection ratio(CMRR)=differential gain(Ad) / common mode gain(Ac) Ad/Ac=2400.

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