Response to the following problem:
The MOSFET in the amplifier circuit of Fig. has Vt = 0.6 V, kn = 5 mA/V2, and VA = 60 V. The signal vsig has a zero average.
(a) It is required to bias the transistor to operate at an overdrive voltage VOV = 0.2 V. What must the dc voltage at the drain be? Calculate the dc drain current ID taking into account VA. Now, what value must the drain resistance RD have?
(b) Calculate the values of gm and ro at the bias point established in (a).
(c) Using the small-signal equivalent circuit of the amplifier, show that the voltage gain is given by
An op amp utilized in the inverting configuration.