The feedback current amplifier in Fig. utilizes two identical NMOS transistors sized so that at ID = 0.2 Ma they operate at VOV = 0.2 V. Both devices have Vt = 0.5 V and VA = 10 V.
(a) If Is has zero dc component, show that both Q1 and Q2 are operating at ID = 0.2 mA. What is the dc voltage at the input?
(b) Find gm and ro for each of Q1 and Q2.
(c) Find the A circuit and the value of Ri , A, and Ro.
(d) Find the value of β.
(e) Find Aβ and Af .
(f) Find Rin and Rout .
