For the given circuit: VDD = 1.8V. Assume, n = 0.1V-1, p = 0.05V-1, VTHn = 0.4V, VTHp = -0.5V, nCox = 100A/V², pCox = 50A/V² (W/L)_MB0 = 20/0.5, (W/L)_MB1 = 2*(20/0.5), (W/L)_M1 = (W/L)_M2 = 50/0.3, (W/L)_M3 = (W/L)_M4 = 50/1. a) If R₁ = 120k, determine I_B. Assume _n = 0, for MB0. (Hint: use approximation method, starting point, V_B = 0.6V). Accuracy up to 1 decimal place is sufficient. b) The common mode voltage of V_in+, V_in- = 1V. Determine I_SS using approximation method (starting point, _n = _p = 0). (Hint: Use half-circuit for the common mode view, Vx, Vout has no effect of current, I_SS. Does the p-devices effect I_SS?) Accuracy up to 1 decimal place is sufficient. Also, calculate V_y from this view. c) Determine V_x. (Hint: use the differential mode view. Assume, _n = 0 as the starting point.) Accuracy up to 1 decimal place is sufficient. d) Calculate the differential gain using the currents calculated above and the finite _n, _p values. e) Calculate the common mode gain using the currents calculated above and the finite _n, _p values.

For M2, the gate voltage is V_in :

Vdd R1 M4 M3 JET VA Vout Vint M2 M1 Vy I Vine MBO CE Iss MB1 Vdd R1 M4 M3 JET VA Vout Vint M2 M1 Vy I Vine MBO CE Iss MB1