(a) In the circuit of replace the FETs with their small-signal models and obtain an expression for the small-signal gain a 5 voyvi in terms of gm, ro, and R. Hence, calculate this gain for (b) VDD 5 5...

(a) In the circuit of replace the FETs with their small-signal models and obtain an expression for the small-signal gain a 5 voyvi in terms of gm, ro, and R. Hence, calculate this gain for (b) VDD 5 5 V, (c) VDD 5 10 V, and (d) VDD 5 3 V. (e) Develop an expression for a in terms of VDD and in the limit R @ ro, compare with the calculated values, and comment.