Shown in Fig. P7.20 is the source follower, the MOS counterpart of the emitter follower of Fig. 7.28a. Using the series-shunt procedure, develop expressions for Ri , Ro, and the unloaded gain A, and...

Shown in Fig. P7.20 is the source follower, the MOS counterpart of the emitter follower of Fig. 7.28a. Using the series-shunt procedure, develop expressions for Ri , Ro, and the unloaded gain A, and compare them with already-known results. Hence, calculate their values if RS 5 20 kV, gm 5 1.25 mA/V, 5 0.1, and ro 5 50 kV.