Consider the diff-amp shown in Figure P11.62. The circuit parameters are V+ = 3 V, V− = −3...

Consider the diff-amp shown in Figure P11.62. The circuit parameters are V+ = 3 V, V− = −3 V, and IQ = 0.4 mA. The npn transistor parameters are βnpn = 180, VBE(on) = 0.7 V, and VAN = 120 V, and the pnp transistor parameters are βpnp = 120, VEB(on) = 0.7 V, and VAP = 80 V. (a) Sketch the small-signal equivalent circuit for the diff-amp assuming an ideal differential-mode input signal, (b) Determine the one-sided differential-mode gain Ad1 = ∆vo1/vd. (c) Determine the one-sided differential- mode gain Ad2 = ∆vo2/vd. (d) Find the two-sided differential-mode gain Ad3 = ∆(vo2 − vo1)/vd.