Physics · Analog Electronics
In a small-signal circuit, an enhancement-mode n-channel MOSFET with source resistance R0 and drain resistance R0 is biased in saturation with a transconductance gm. A small-signal low-frequency voltage vd injected at the supply terminal results in a small-signal voltage fluctuation v0 at the output. If the channel length modulation of the MOSFET is ignored, the small-signal gain v0/vd is given by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1gmR02 + 32-1✓
- 2-gmR01 + 2gmR0
- 3(gmR0 + 1)-1
- 4-gmR01 + gmR0
Correct answer
gmR02 + 32-1
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