Redesign the feedback circuit in Figure P12.36 using MOSFETs to provide a voltage gain of \(A_{v f}=8\) and such that \(v_{o}=0\) when \(v_{i}=0\). Assume circuit parameters of \(R_{S}=1 \mathrm{k} \Omega, R_{1}=15 \mathrm{k} \Omega\), and \(R_{L}=10 \mathrm{k} \Omega\). The transistor parameters are \(k_{n}^{\prime}=100 \mu \mathrm{A} / \mathrm{V}^{2}, V_{T N}=1.5 \mathrm{~V}\), and \(\lambda=0\).

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Vi +1 R = 1 www Figure P12.36 V+ = 12 V Rc = 22.6 k R = 50 k ww R = 10 Q3 Q1 Q2 1 1 mA 2 mA R = 4 k