The transistor in the common-source amplifier in Figure P4.20 has parameters \(V_{T N}=0.8 \mathrm{~V}, k_{n}^{\prime}=100 \mu \mathrm{A} / \mathrm{V}^{2}, W / L=50\), and \(\lambda=0.02 \mathrm{~V}^{-1}\). The circuit parameters are \(V^{+}=5 \mathrm{~V}, V^{-}=-5 \mathrm{~V}, I_{Q}=0.5 \mathrm{~mA}\), and \(R_{D}=6 \mathrm{k} \Omega\).

(a) Determine \(V_{G S Q}\) and \(V_{D S Q}\).

(b) Find the small-signal voltage gain for \(R_{L}=\infty\).

(c) Repeat part (b) for \(R_{L}=20 \mathrm{k} \Omega\).

(d) Repeat part (b) for \(R_{L}=6 \mathrm{k} \Omega\).

Transcribed Image Text:

CCl Figure P4.20 RG= 200 1+ Rp CC2 RL