Mahatma Gandhi University (MGU) 2012-4th Sem B.Tech Applied Electronics and Instrumentation MG UNIVERSITY for ANALOG CIRCUITS, - Question Paper

B.TECH DEGREE EXAMINATION, MAY 2012

Fourth Semester

Branch : Applied Electronics and Instrumentation/Electronics and Communication Engineering

ANALOG CIRCUITS
(Regular-2010 Admissions)
Time: 3 Hours Maximum : 100 Marks

Part A
ans all ques..
every ques. carries three marks. [5 x three = 15 Marks]

1. What is impact ionization?

2. What is meant by slew rate?

3. Write down the applications of the Op-Amp.

4. Write down the comparator advantages and disadvantages.

5. Draw the circuit diagram for 555 Timer Astable Multivibrator.

Part B
every ques. carries five marks. [5 x five = 25 Marks]

6. What is Large signal and small signal Analysis of differential amplifier? Derive the
expression for ideal characteristics of Op-Amplifier [I/P Resistance, Voltage gain, CMRR,
Output Resistance].

7. discuss in detail with the frequency compensation of an Op-Amp.

8. discuss in detail about waveform generator [Triangular, Square Wave].

9. Design and discuss Bi-quadratic Low pass filter by choosing non-inverting gain configuration.

10.What is Data converter and discuss ADC and DAC?

Part C
every ques. carries five marks. [5 x 12 = 60 Marks]

11. Derive the expression for ideal Op-Amp parameters. [Marks 12]
or
12. What is current source and voltage source Reference in single-step amplifier and derive the
necessary Expression? [Marks 12]

13. discuss internal circuitry of 741-Op-Amp with necessary Expression. [Marks 12]
or
14. discuss two-stage CMOS Op-Amp operation. [Marks 12]

15. discuss in detail about:
a) Differential amplifier. [Marks 6]
b) Instrumentaion amplifier. [Marks 6]
or
16. Derive the expression for V-I and I-V converter by adopting Inverting Op-Amp is a key
element. [Marks 12]

17. What is:
a) Low pass filter,
b) High pass filter,
c) Band pass filter,
d) Band Elimination filter and its significance? [Marks 12]
or
18. What is Biquadratic filter and discuss how it derivate from first order filters.
[Marks 12]

19. What is flash ADC and discuss in detail about delta sigma ADC. [Marks 12]
or
20. discuss VCO working principle and how its significantly escape from capture range to
Locking Range. [Marks 12]

Earning:   Approval pending.