GATE EE 2025 Set 1 — Question 16
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Analog & Digital Electronics → Amplifiers & Feedback → Single-Stage Amplifiers
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Question
Which one of the following statements is true about the small signal voltage gain of a MOSFET based single stage amplifier?
Correct answer
(C) Common source amplifier is inverting and common gate amplifier is non-inverting amplifier
Solution
In MOSFET single-stage amplifiers:
1.Common Source (CS): The voltage gain is . The negative sign indicates a phase shift, making it an inverting amplifier.
2.Common Gate (CG): The voltage gain is . The positive sign indicates that the output is in phase with the input, making it a non-inverting amplifier.
3.Common Drain (CD): Also known as a source follower, it has a positive gain , making it non-inverting.
Therefore, option (C) is correct.Continue learning with Success Tracker
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