Problem 2: Consider the circuit shown in Figure 2. Assume that µnCox=

200μA/V², VDD=1.25V, VTH=0.5V, W/L=1, and Rò=10kQ. Ignore

channel length modulation.

(a) Determine the drain current, ID.

(b) Draw the small signal model of the circuit. Show the component

values. Consider channel length modulation, assume λ = 0.8V-¹.

(c) Calculate the impedance looking into the terminal 1-1', using the

small signal model in (b).

(3+3+4=10 points)

VDD

SRD

M₁

Figure 2