For problems 1 and 2 use the transistor plot shown in Figure 1. Use approximations
if required but with proper justification. Assume all transistors are of equal size
and the threshold voltage to be 0.8V.
1. You are given a current mirror circuit in Figure 2.
(a) Calculate the mismatch factor which is given by
(b) What is the input impedance at node Vg ? [ 3 points ]
(c) What is the input impedance at node A ? (Trick question) [3 points]
2. The following question is based on circuit shown in Figure 3.
(a) What is the input impedance at node A ? [3 points]
(b) What is the value of voltage ? [ 3 points]
(c) What is the minimum value of V1 for transistors M1 and M2 to be in
saturation ? [ 4 points]