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Derive expression for voltage gain, input resistance and output resistance for source follower circuit using n-channel MOSEFT
written 5.6 years ago by gravatar for teamques10 teamques10 ★ 65k •   modified 4.6 years ago
electronic devices and circuits
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written 5.6 years ago by gravatar for teamques10 teamques10 ★ 65k •   modified 5.6 years ago

The input is applied to the gate and output is obtained at the source. The source follower amplifier is shown in fig .1. Ac equivalent circuit is drawn by connecting drain to ground

enter image description here

For voltage gain A_V: AV =Vo/Vi

Output voltage is measured across ro ||RS

Vo= gm Vgs (ro||RS) …

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