For the common-gate configuration of Fig. 8.92 :

a. Determine A_vNL, Z_i and Z_o.
b. Sketch the two-port model of Fig. 5.75 with the parameters determined in part (a) in place.
c. Determine A_vL and A_vs.
d. Change R_L to 2.2 kΩ and calculate A_vL and A_vs. What was the effect of changing R_L on the voltage gains?

Fig. 5.75

e. Change R _sig to 0.1 kΩ  (with R L at 4.7 kΩ ) and calculate A_vL and Avs. What was the effect of changing R _sig on the voltage gains?
f. Change R _L to 2.2 kΩ and R _sig to 0.1 kΩ and calculate Z _i and Z _o. What was the effect on both parameters?
g. What general conclusions can you draw from the above calculations?

Transcribed Image Text:

18 V 3.3 k2 5.6 µF Ipss = 5 mA Vp = -4 V Rsig 5.6 µF 4.7 k2 0.5 k2 1.2 k2 FIG. 8.92