Exam Questions Papers - Engineering

Q1:

For the circuit shown in the following figure, transistors M1 and M2 are identical NMOS transistors. Assume that M2 is in saturation and the output is unloaded

The current Ix is related to Ibias as

A Ix = Ibias + Is

B Ix = Ibias

C Ix = Ibias - Is

D

ANS:B - Ix = Ibias

Given circuit is current mirror IG = 0
Ix = Ibias .