Question

1. Design the common source amplifier shown in Figure 1 with Ip- 1 mA and Vo 5 V Determine V2 and Ri. The MOSFET characteristics are V-50 V, k-0.093 A/V, gate-to- drain capacitance, Cd 40 pF, and Vi 1.1 V. (For PSpice simulations, use parameters: VTO. 1.1 LAMBDA-002 KP-0.093 CGDO-4E-7 w=100u L-I00u for the 2N7000 MOSFET.) a. Determine the gain and gm of the circuit b. Determine the low-frequency (high-pass response) poles of the common-source amplifier due to the coupling capacitors, Ci and C2 c. Determine thie two high-frequency (low-pass response) poles by utilizing the Miller effect. (Look in Sedra/Smith 6 ed., Equations 9.78.9.83) d. Draw the equivalent small-signal model of the circuit after the application of Miller's theorem. V1 V2 10V R1 R2 10k C2 C1 M1 R3 L=100u 80 R4 5k V3 Figure 1. Common-source amplifier.

Answer 1

2. 1さ 2 o.013 IO , 0136 -v/exo.og3xo-3 (a) gm、/2k, Rs So R, 5 K

eninS 39.5 ngj Rg V. 3 Vo

ci : (ad (1+8meL )=uos (1+13.GNyx.3g) 1.339 nF 1.339 8mR 13.64x2.28 -I t ph due to C 7 Vo 1-333nf 238k