9.62 Consider the basic differential circuit in which the transistors have β = 120 and VA = 80 V, with I = 0.2 mA, REE = 400 Ω, and RC = 20 Ω. The collector resistances are matched to within 2%. Find:
(a) the differential gain
(b) the differential input resistance
(c) the common-mode gain
(d) the common-mode rejection ratio
(e) the common-mode input resistance
1 Answer