FACULTY OF ENGINEERING B.E. 3/4 (EE/ Inst.) I-Semester (Old) Examination, November / December 2012 Subject: Linear Integrated Circuits Time : 3 Hours
Max. Marks: 75
Note: Answer all questions of Part - A and answer any five questions from Part-B. PART – A (25 Marks) 1. Draw and explain the internal block diagram of typical op-amp circuit.
(3)
2. In what way is IC74IS better than IC741?
(2)
3. Write the applications of Integrator?
(2)
4. Explain V-I converter and also write the applications.
(3)
5. Compare Monostable and bistable multivibrators.
(2)
6. Draw the circuit for sample and hold circuit and write any two applications.
(3)
7. Write the applications of the monostable mode of operation of 555 IC
(2)
8. List the limitations of IC-723 regulators.
(3)
9. Why are series regulators called as linear regulators?
(2)
10. Explain the circuit diagram of switched capacitor filter.
(3)
PART – B (5x10=50 Marks) 11.(a) Explain the characteristics of operational amplifiers. (b) Draw and explain current to voltage converter and voltage to current converter. 12.
Define an instrumentation amplifier. Explain the principle of operation of instrumentation amplifier. Also give features with advantages and disadvantages? Also give applications.
(5) (5)
(10)
13.(a) Compare Monostable and Astable Multivibrators using 555 timer. (b) Explain successive Approximation type A/D converter.
(5) (5)
14.(a) Explain hybrid voltage regulator. (b) Explain Dual voltage regulators.
(5) (5)
15. Explain the second order band reject filter with necessary derivations.
(10)
16.(a) Explain the principle of multivibrator. (b) Compare comparator and Schmitt trigger using op-amp.
(5) (5)
17.(a) Write short note on Balanced modulator and demodulator. (b) Write short notes on oscillators.
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Also give features with advantages and. disadvantages? Also give applications. (10). 13.(a) Compare Monostable and Astable Multivibrators using 555 timer. (5).
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