Consider the diff-amp shown in Figure P11.48. Assume λ1 = λ2 = 0 and assume the current so...

Consider the diff-amp shown in Figure P11.48. Assume λ1 = λ2 = 0 and assume the current source has an output resistance of Ro. (a) Derive the expression for the differential-mode voltage gain Ad = ∆ vO/vd where vd = v1 − v2. (b) Derive the expression for the common-mode voltage gain Acm = ∆vO/vcm where vcm = (v1 + v2)/2.