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An op-amp uses a level shifter internally to prevent the loading effect.

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An op-amp uses a level shifter internally to prevent the loading effect.

(a) True

(b) False

I had been asked this question during a job interview.

My question is from Op-Amp Characteristics in chapter Op-amps and its Applications of Analog Circuits

1 Answer

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Right option is (a) True

Explanation: A level shifter is used to eliminate the DC bias voltage present in the output of the intermediate stage which can cause distortion. Also, the level shifter has high input resistance which prevents loading effect on the intermediate stage since it is also a voltage buffer.

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