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The voltage gain of a simple CG stage is greater than that of a follower.

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The voltage gain of a simple CG stage is greater than that of a follower.

(a) True

(b) False

The question was posed to me by my college director while I was bunking the class.

This interesting question is from MOSFET Amplifier with CG Configuration topic in chapter FET Amplifiers of Analog Circuits

1 Answer

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Correct answer is (a) True

The best I can explain: The voltage gain of a follower is always less than that of a CG stage. This can be proven by a small signal analysis that the voltage gain for a follower is Rs/(1/gm + Rs) while that of the CG stage is gm * Rd. Hence the above statement is true.

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