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The purpose of level shifter in Op-amp internal circuit is to

(a) Adjust DC voltage

(b) Increase impedance

(c) Provide high gain

(d) Decrease input resistance

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This intriguing question originated from Operational Amplifier Internal Circuit topic in portion Operational Amplifier of Linear Integrated Circuits

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by (39.8k points)
Right choice is (a) Adjust DC voltage

Navigate through clarity with: The gain stages in Op-amp are direct coupled. So, level shifter is used for adjustment of DC level.

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