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Why closed loop differential amplifiers are difficult to null?

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+1 vote
in Linear Integrated Circuits by (38.2k points)
Why closed loop differential amplifiers are difficult to null?

(a) Due to compensating network

(b) Due to feedback loop

(c) Due to input offset voltage

(d) None of the mentioned

I got this question in a national level competition.

The above asked question is from Input Offset Voltage in section Operational Amplifier Fundamentals of Linear Integrated Circuits

1 Answer

0 votes
by (39.8k points)
The accurate answer is (a) Due to compensating network

Unravel the mysteries with: The closed loop differential amplifiers are more difficult to null because the use of compensating network can change the common mode rejection mode.

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