Response to the following problem:
The NMOS transistor in the circuit of Fig. has Vt = 0.5 V, k1nW/L = 2 mA/V2, and VA= 20 V.
(a) Neglecting the dc current in the feedback network and the effect of ro, find VGS. Then find the dc current in the feedback network and VDS. Verify that you were justified in neglecting the current in the feedback network when you found VGS.
(b) Find the small-signal voltage gain, vo/vi . What is the peak of the largest output sine-wave signal that is possible while the NMOS transistor remains in saturation? What is the corresponding input signal?
(c) Find the small-signal input resistance Rin.
