Adaptive Integrated Microsystems Example mid-term questions ECE 412 Algorithms of Circuit Design (Fall 2010) Class website:

Adaptive Integrated Microsystems Problem 1 Small signal parameters for all transistors are equal. Make sure that the signs in final gain is correct.

Adaptive Integrated Microsystems Problem 1 Steps 1)T5 and T6 are mirrors. 2)T4 and T5 is a source follower. 3)Therefore T3 and T13 are source follower. 4)Find the voltage change at the gate of T10. 5)T10 and T9 is a source follower. 6)What is the current change through T11 and T12.

Adaptive Integrated Microsystems Problem 1

Adaptive Integrated Microsystems Problem 2 Small signal parameters for all transistors are equal.

Adaptive Integrated Microsystems Problem 2 Steps 1)Convince yourself that when Vin+ and Vin- is constant the source of T1 and T2 effect the current in T1 and T2 is the same manner. 2)Therefore the circuit is still symmetrical.

Adaptive Integrated Microsystems Problem 2 Red – Voltage Green -Current

Adaptive Integrated Microsystems Problem 3 Small signal parameters for all transistors are equal.

Adaptive Integrated Microsystems Problem 3 Find the point of symmetry and connect it to ground. Then T1 is common source amplifier. T6 does not do anything.

Adaptive Integrated Microsystems Problem 3 Red – Voltage Green -Current

Adaptive Integrated Microsystems Sample Small signal parameters for all transistors are equal.

Adaptive Integrated Microsystems Samples