The current source in the source-follower circuit in Figure P4.42 is \(I_{Q}=10 \mathrm{~mA}\) and the transistor parameters are \(V_{T P}=-2 \mathrm{~V}, K_{p}=5 \mathrm{~mA} / \mathrm{V}^{2}\), and \(\lambda=0.01 \mathrm{~V}^{-1}\).

(a) Find the open circuit \(\left(R_{L}=\infty\right)\) small-signal voltage gain.

(b) Determine the small-signal output resistance \(R_{o}\).

(c) What value of \(R_{L}\) will reduce the small-signal voltage gain to \(A_{v}=0.90\) ?

CCI V+= 5 V CC2 Vi RG= 200 V=-5 V Figure P4.42 Ro Vo www R