HW6 Numerical Answers

12.15:
VGS = -4 V

12.24:
Vomax = 8.4 V
Vomin = 1.2 V
VoQ = 4.5 V

12.30:
R1 = 2.583 Mohms
RS = 400 ohms

12.37:
gm = un*Cox*(W/L)*VDSQ

12.40:
gm = 8.155 mS
rd = 5 kohms

12.47:
(c) IDQ = 4.31 mA, gm = 4.16 mS
(d) Av = -9.37, Rin = 9.64 kohms, Ro = 414 ohms
(e) vo(t) = -0.164*sin(2000pi*t)

Problem 1:
VGSQ = 1.8V
VDSQ = 4V
IDSQ = 0.2 mA
M1 is in saturation
Vo = 4.2V

Problem 2:
(a) IDSQ = 4 mV, VDSQ = 7 V
(b) vg/vin = 8E5/(8.1E5+jw*4E-5)
(c) vo/vin = 5.818E6/(8.1E5+jw*4E-5)

Problem 3:
(c) vo/vin = -gm1(ro1||ro2||1/gm2)

Problem 4:
vo/vin = -10*(jw/1000)/[(1+jw/1000)(1+jw/1E6)]
The homework did not ask you to plot the Bode plot for this, but try it -- it's good practice!