Consider the circuit shown in Figure P10.48. Let (I_{text {REF }}=200 mu) A. The transistor parameters are

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Consider the circuit shown in Figure P10.48. Let \(I_{\text {REF }}=200 \mu\) A. The transistor parameters are \(K_{n 1}=K_{n 2}=0.2 \mathrm{~mA} / \mathrm{V}^{2}, V_{T N 1}=V_{T N 2}=0.5 \mathrm{~V}\), and \(\lambda_{1}=\lambda_{2}=0\).

(a) If \(R_{S}=10 \mathrm{k} \Omega\), determine \(I_{O}\) and \(V_{G S 2}\).

(b) If \(I_{O}=0.5 I_{\mathrm{REF}}\), determine \(R_{S}\) and \(V_{G S 2}\).

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