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# Indian Institute of Technology Madras (IIT-M) 2007 B.Tech Electrical Engineering Analog Circuits, Quiz 2 - Question Paper

Wednesday, 23 January 2013 03:20Web

EC201 : ANALOG CIRCUITS
QUIZ 2? Maximum Marks 20 TIME - one Hour

EC201: ANALOG CIRCUITS QUIZ 2 Maximum Marks 20 TIME - 1 Hour Roll Number : Name :

Please explicitly state all assumptions you make. In your own interest, do not skip steps while working the problems. NO CREDIT WILL BE GIVEN FOR ANSWERS WITHOUT CLEAR EXPLANATIONS AS TO HOW YOU CAME TO THE SOLUTION. THE INSTRUCTORS JUDGMENT WILL BE FINAL IN THIS REGARD.

Problem 1 (20 Marks)

 10.65 V P = infinity

WRITE THE FINAL ANSWERS IN THE COLUMNS 2 & 3 BELOW. DO NOT WRITE ANYTHING IN COLUMN 4

Problem 1

 (a) A B 1 C D 1 E F 1 (b) Ml M2 1 Qi Q2 1 (c) Vout/Vin 5 (d) Zin Zout 4 (e) Max. amplitude 6

VTP = 0.45 V (1/2)|j,Cox(W/L) = 2.5 mA/V2

Figure 1: Circuit diagram for Problem 1.

Consider the circuit shown in Figure 1. M1 and M2 are identical devices. All capacitors are infinite.

a.    Find the quiescent voltages at nodes A,B,C,D,E and F. (3 Marks)

b.    Find the quiescent currents through M1, M2, Q1 and Q2. (2 Marks)

c.    Determine the small signal gain vout/vin. (5 marks)

d.    Determine the input and output impedances Zin and Zout. (4 marks)

d. Determine the amplitude of the largest input sinewave that will result in a distortion free output. Do not skip steps. (6 marks)

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