Determine the quiescent values idq1nbspand icnbspq2 -nbsp

Question

The parameters of the BiCMOS circuit in given Figure are V + = 5 V, V_GG = 2.5 V, R_D1 = 5 k Ω, R_E2 = 1.6 k Ω, and R_L = 1.2 k Ω.

The transistor parameters are K_n = 1.5 mA/V², V_TN = 0.5 V, λ = 0 for M₁ and h_{F E} = 120, V_E B(on) = 0.7 V, V_A = ∞ for _Q2.

(a) Determine the quiescent values I_DQ1 and I_C Q₂.

(b) Find the small-signal voltage gain A_v = v_o/v_i .

(c) Determine the small-signal output resistance R_of .