Problem III: (30 Marks, 10 Marks each): In the common drain amplifier also called source-follower circuit in the Figure below with a depletion NMOS transistor, the device parameters are:VIN =

-2 V, K= 5 mA/V?, and 2 = 0.01 V!. a) Design the circuit such that Ipo = 5 mA. b) Find the small signal voltage gain Ay= vvi, (show small signal equivalent circuit). c) Find the output resistance Ro.