**7.124 The MOSFET in the amplifier circuit of Fig. P7.124 has Vt = 0.6 V and kn = 5 mA/V2. We shall assume that V A is sufficiently large so that we can ignore the Early effect. The input 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 I D. What value must R D have? (b) Calculate the value of gm at the bias point. (c) Use the small-signal equivalent circuit of the amplifier to show that

124 - **7.124 The MOSFET in the amplifier circuit of Fig. P7.124 has Vt = 0.6 V and kn = 5 mA/V2. We shall assume that V A is sufficiently large so that we can ignore the Early effect. The input 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 I D. What value must R D have? (b) Calculate the value of gm at the bias point. (c) Use the small-signal equivalent circuit of the amplifier to show that

This content is for Premium members only.
sign up for premium and access unlimited solutions for a month at just 5$(not renewed automatically)


images - **7.124 The MOSFET in the amplifier circuit of Fig. P7.124 has Vt = 0.6 V and kn = 5 mA/V2. We shall assume that V A is sufficiently large so that we can ignore the Early effect. The input 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 I D. What value must R D have? (b) Calculate the value of gm at the bias point. (c) Use the small-signal equivalent circuit of the amplifier to show that

already a member please login


5   +   4   =