(Q.1-Q.2) A discrete MOSFET common source amplifier has Rin = 2 MΩ, gmm = 4mA/V, ro = 100 kΩ, RD = 10 kΩ, Cgs = 2pF and Cgd = 0.5pF. The amplifier is fed from a voltage source with an internal resistance of 500 kΩ and Is connected to the a load of 10 kΩ.
Q. The value of the overall mixed gain AM is
The upper 3-db frequency fH is
(Q.3-Q.4) The amplifier in the figure shown below is biased to operate at ID = 1mA and gm = 1mA/V.
Q. Find the midband gain.
Find the value of CS that places FL at 10Hz
(Q.5-Q.6) )In the NMOS transistor of the circuit shown below is biased to have gm = 1mA/V and r0 = 100 kΩ.
Q. Find AM
Find fH if Cgs = 1 pF and Cgd = 0.2 pF.
(Q.7-Q.8) For a particular depletion mode NMOS device, Vt = -2V, kn W/L = 200 µA/V2 and λ = 0.02V-1. For VDS = 2V
Q. What is the drain current that flows
What is the value of the drain current if both L and W are doubled?
(Q.9-Q.10) A depletion type N channel MOSFEt with knW/L = 2 mA/V2 and Vt = 3V has its source and gate grounded. For Vd = 0.1V and neglecting channel length modulating effect
Q. Find drain current.
In which region is the triode operating?