Response to the following question:
A CG amplifier when fed with a signal source having Rsig = 100 Ω is found to have an overall voltage gain of 12 V/V. When a 100-Ω istance was added in series with the signal generator the overall voltage gain decreased to 10 V/V. What must gm of the MOSFET be? If the MOSFET is biased at ID =0.25 mA, at what overdrive voltage must it be operating?