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What is the drawback in using Darlington pair in differential amplifier?

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in Linear Integrated Circuits by (37.1k points)
What is the drawback in using Darlington pair in differential amplifier?

(a) Large current gain

(b) Output current in milli ampere

(c) Gain is proportional to load resistor

(d) High offset voltage

This question was posed to me in semester exam.

I'm obligated to ask this question of Operational Amplifier Internal Circuit topic in section Operational Amplifier of Linear Integrated Circuits

1 Answer

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by (39.8k points)
The accurate option is (d) High offset voltage

Navigate through clarity with: Due to cascaded stage, Darlington differential amplifier offers higher offset voltage which is two times larger than ordinary two transistor used in differential amplifier.

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