With a differential gain of 50,000 and a common-mode gain of 2, what is the comm

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Question
With a differential gain of 50,000 and a common-mode gain of 2, what is the common-mode rejection ratio?
Options
A. ?87.9 dB
B. ?43.9 dB
C. 43.9 dB
D. 87.9 dB

Correct Answer

87.9 dB

Operational Amplifiers problems

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1. The closed-loop voltage gain of an inverting amplifier equals:
Options
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain
C. the feedback resistance divided by the input resistance
D. the input resistance

4. The magnitude of closed-loop voltage gain (A_cl) of an inverting amplifier equals:
Options
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain A_ol
C. the feedback resistance divided by the input resistance
D. the input resistance

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