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Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FOURTH SEMESTER B.TECH DEGREE EXAMINATION, JUNE 2017

Course Code: EC204
Course Name: ANALOG INTEGRATED CIRCUITS (AE, EC)

Max. Marks: 100 Duration: 3 Hours
PART A
Question No.1 is compulsory. Answer question 2 or 3
1. a. Define the following terms (6)

i) CMRR
ii) Slew rate
iii) PSRR

b. Design a circuit to obtain an output voltage of -(V,+2V,+5V,) (5)

c. Derive the following characteristics of voltage series feedback amplifier. (4)

i) Closed loop gain
ii) Input impedance
111) Output impedance
iv) Bandwidth

2. a. Explain in detail a method of improving CMRR of differential amplifier. (10)
b. Explain the various stages of op-amp. (5)
OR

3. Draw an instrumentation amplifier using four op-amps and explain the need for each

op-amp. Derive the expression for its output voltage. (15)

PART B

Question No.4 is compulsory. Answer question 5 or 6.

4. a. Explain the working of precision full wave rectifier with a neat diagram. (7)

b. Draw a second order active high pass filter and derive the expression for its cut off

frequency. (8)
5. a. With the help of a neat diagram, derive the frequency of oscillation for RC phase

shift oscillator. (10)

b. Draw the circuit of antilog amplifier and derive the output voltage. (5)

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