(Solved): BIAS 1. The following circuit is common drain amplifier (or source follower amplifier) and the NMO ...

BIAS 1. The following circuit is common drain amplifier (or source follower amplifier) and the NMOS transistor operates in saturation region. V Bas is the DC voltage source for DC biasing, V, is the small-signal source and Rs the source resistance. i sup is the DC biasing current and R, the load resistor. + Rs M UBIAS 'SUP VOUT SRL V Cad D 06+ If vgs Cas 8mgs o S S (1)Please derive the complete small-signal equivalent circuit for the source follower amplifier. (Hint: DC current source i sup can be treated as a open circuit) (2) Apply Miller Effect to estimate 3dB bandwidth of the amplifier. (Hint: First, derive the Miller equivalent circuit from the small-signal equivalent circuit in (1), then compute the Miller Effect gain by neglecting the Miller output capacitance and finally estimate the bandwidth).