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Design With Linear Integrated Circuits Question Paper - Jun 19 - Electronics Engineering (Semester 5) - Mumbai University (MU)

## Design With Linear Integrated Circuits - Jun 19

### Electronics Engineering (Semester 5)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.

1.a. Determine V0/Vin for the circuit shown below- (5 marks) 00

1.b. Draw the circuit diagram and explain the operation of zero crossing detector.
(5 marks) 00

(5 marks) 00

1.d. What are active filters? state its advantages over passive filters.
(5 marks) 00

2.a. Draw the circuit diagram and explain the operation of differentiator. What are limitations of ideal differentiator ? How they are overcome in practical circuit, state its application areas.
(10 marks) 00

2.b Design first order low pass fitter using op-amp at a cut off frequency of 1 KHz, having pass band gain of 2.
(10 marks) 00

3.a. Draw the circuit diagram and explain the operation of precision full wave rectifier. Derive the expression of output voltage.
(10 marks) 00

3.b. Design triangular wave generator using op-amp to have output voltage = 7VPP volts, frequency 2 KHZ , with supply voltage =/- 14V.
(5 marks) 0010

4.a. Draw neat circuit diagram and explain the operation of successive approximation type analog to digital convertor. What are its advantages and disadvantages.
(10 marks) 00

4.b. Draw neat circuit diagram and explain the operation of monostable multivibrator using IC 555.
(10 marks) 00

5.a. Design a IC 555 based symmetrical square wave generator for 1 KHZ frequency of Vcc = 5 V. Draw waveforms for voltage across timing capacitor and output.
(10 marks) 00

5 Design voltage regulator using IC 723 to have Io = 50mA, Isc = 75 milli amp, vin= 15V, Assume Vsense = 0.6 V and Vo = 5V.
.b. (10 marks) 00

Attempt any two

6.a. Functional block diagram and working of IC 723.
(10 marks) 00

6.b. PLL (Phase Lock Loop) and its applications.
(10 marks) 00

6.c. Wein bridge oscillator using op-amp.
(10 marks) 00