A MOSFET is connected in the source-follower configuration and employed as the output stage of a cascade amplifier. It is required to provide an output resistance of 200 Ω. If the MOSFET has kn′ = 0.4 mA/V 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?

A MOSFET is connected in the source-follower configuration and employed as the output stage of a cascade amplifier. It is required to provide an output resistance of 200 Ω. If the MOSFET has kn′ = 0.4 mA/V 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?

Image text
A MOSFET is connected in the source-follower configuration and employed as the output stage of a cascade amplifier. It is required to provide an output resistance of 200 Ω . If the MOSFET has k n = 0.4 mA / V and is operated at V ov = 0.25 V , find the required W / L ratio. Also specify the dc bias current I D . If the amplifier load resistance varies over the range 1 k Ω to 10 k Ω , what is the range of G v of the source follower?

Detailed Answer