Consider the circuit in Figure P4.60. The transistor parameters are \(V_{T P D}=-0.6 \mathrm{~V}, \quad V_{T N L}=0.4 \mathrm{~V}, \quad k_{n}^{\prime}=100 \mu \mathrm{A} / \mathrm{V}^{2}, \quad k_{p}^{\prime}=40 \mu \mathrm{A} / \mathrm{V}^{2}\), \(\lambda_{L}=0.02 \mathrm{~V}^{-1}, \lambda_{D}=0.04 \mathrm{~V}^{-1}\), and \((W / L)_{L}=10\).

(a) At the \(Q\)-point, the quiescent drain current is \(I_{D Q}=0.25 \mathrm{~mA}\). (i) Determine \((W / L)_{D}\) such that the small-signal voltage gain is \(A_{v}=V_{o} / V_{i}=-25\). (ii) What is the required value of \(V_{B}\) ? (iii) What is the value of \(V_{S G D Q}\) ?

(b) Repeat part (a) for \(I_{D Q}=0.1 \mathrm{~mA}\).

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V+= 2.5 V MD ML o Vo T V; o T VR - Figure P4.60