1) Given two NMOS FETs having (kn'/2)(W/L) = (3 Kohm)^-1 and Vt = 3V. Using a single 10V dc power supply, design a differential pair amplifier having 1mA bias current in each transistor. What is its maximum gain for linear operation (balanced input, balanced output)? Assume ro = ∞.
Hint: Increase the value of RD until the MOSFETs leave their saturation regions.
2) Given two NPN BJTs having b = 100 and ro = 100 KW. Using a single 5V dc power supply, design a differential pair amplifier having 1mA bias current in each transistor. What is its maximum gain for linear operation (balanced input, unbalanced output)?
Hint: Increase the value of RC until the BJTs leave their active regions.