D7.29 A MOSFET is connected in the source-follower configuration and used as the output stage of a cascade amplifier. It is required to provide an output resistance of 200 Ω. If the MOSFET has = 0.4 mA/V2 and is operated at VOV = 0.25 V, find the required W/L ratio. Also specify the dc bias current ID. If the amplifier load resistance varies over the range 1 kΩ to 10 kΩ, what is the range of Gv of the source follower?
50; 0.625 mA; 0.83 V/V to 0.98 V/V