This is a small-signal problem built up towards a transfer function. Suppose the MOSFETs drawn have /E, = 1 mA when Vcs = 2.5 V, and Vth = 0.5 V.
V0L, = 5 V
Vin
Rs = 5 kit
Vin
V„„,
VD, = 5 V Vuur
Vout Rs = 5 kit RL = = VD, = 5 V n Lc t
Rs = 5 kfl
RL
Vin
Vin
Vin
(a) Derive Ay for this circuit assuming Rc = w, draw the transfer function on the first plot above, and label Ay. Explain whether you expect clipping or not.
(b) Derive Ay for this circuit assuming Rc = 5013, draw the transfer function on the second plot above, and label Av.
(c) Derive Ay for this circuit assuming RL = 50 it and a coupling capacitor C, draw the transfer function on the third plot above, and label Ay.
