Consider the diff-amp in Figure P11.46. The transistor parameters are: \(K_{n 1}=K_{n 2}=50 \mu \mathrm{A} / \mathrm{V}^{2}, \lambda_{1}=\lambda_{2}=0.02 \mathrm{~V}^{-1}\), and \(V_{T N 1}=V_{T N 2}=1 \mathrm{~V}\).

(a) Determine \(I_{S}, I_{D 1}, I_{D 2}\), and \(v_{O 2}\) for \(v_{1}=v_{2}=0\).

(b) Using the smallsignal equivalent circuit, determine the differential-mode voltage gain \(A_{d}=\) \(v_{o 2} / v_{d}\), the common-mode voltage gain \(A_{c m}=v_{o 2} / v_{c m}\), and the \(\mathrm{CMRR}_{\mathrm{dB}}\).

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V+ 5 V R = 25 kD D2 RD = 25 ks2 -0 02 M M Rs = 20 ks Figure P11.46 V=-5 V