(a) Show that for the class AB circuit in Fig. 12.23, the small-signal output resistance

Chapter 12, Problem 12.45

(choose chapter or problem)

(a) Show that for the class AB circuit in Fig. 12.23, the small-signal output resistance in the quiescent state is given by Rout 1 gmn +gmp which for matched devices becomes Rout = 1 2gm (b) For a circuit that utilizes MOSFETs with Vt = 0.5 V and k (W/L) = 200 mA/V2 , find the voltage VGG that results in Rout = 20 . Also, find IQ.

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