B.Sc. (Three Year) DEGREE EXAMINATION, MARCH/APRIL 2017.
End Semester Examination
Fourth Semester
Part II — Electronics
Paper IV ANALOG AND DIGITAL IC APPLICATIONS
2 C 4312
Time 3 Hours Max. Marks 70
PART — A
Answer any FIVE of the following questions. 4 20 Marks)
1. Draw the block diagram of Op-Amp and explain the function of each block.
2. Explain the working of Op-Amp series voltage regulator.
3. Design a mod-5 synchronous counter using T flip-flops.
4. Explain the operation of dual slope A/D converter.
5. Explain the operation of 4-bit serial in parallel out shift register with neat circuit
diagram.
6. Explain the concept of virtual ground in Op-Amp.
7. Explain the operation of monostable multivibrator using Op-Amp.
8. Define and explain CMRR and offset voltage.
PART — B
Answer ALL the following questions. 10 50 Marks)
9. Draw the circuit diagrams of inverting and non-inverting Op-Amps and
explain their operations. Derive expressions for voltage gains.
Or
Give relevant diagrams and explain the operation of Op-Amp summing
amplifier and logarithmic amplifier.

10. Draw the circuit diagram for a square wave generator using Op-Amp and
explain its operation. Draw the timing waveforms.
Or
Draw the functional block diagram of IC555 and explain its operation.
11. Design Gray to binary code converter.
Or
Design 3 bit binary UP/DOWN counter using JK flip-flops.
12. Explain the principle of A/D converter. Describe the operation of successive
approximation ADC.
Or
What is D/A converter? Explain D/A conversion using R-2R ladder network.
13. What is LED? Explain the interfacing of LED's.
Or
Explain the operation of 4-bit parallel in serial out shift register with neat
circuit diagram.
———————