Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 5th Sem Old 151003 Integrated Circuit And Applications Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? V(OLD) EXAMINATION ? SUMMER 2019
Subject Code:151003 Date:06/06/2019
Subject Name: Integrated Circuit and Applications
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Which type of feedback is used in inverting op-amp? Derive exact expressions for voltage
gain, input resistance, output resistance and bandwidth for inverting op-amp.
07
(b) Explain following terms related to op-amp:
(1) CMRR (2) PSRR (3) Slew Rate (4) Channel separation in multiple op-amps IC
(5)Equivalent input noise voltage and current (6) Input offset current (7)Input offset
voltage
07
Q.2 (a) (i) Draw and explain the block diagram of Op-Amp 03
(ii) List three open loop op-amp configurations. Why open loop op-amp configuration are
not used in linear application? Mention some of the linear applications of op ? amps?
04
(b) Draw the differential amplifier circuit using single op-amp and derive the expression for
output voltage as a function of input voltages. Comment on its input resistance.
07
OR
(b) Draw the high frequency model of an Op-Amp and Obtain the expression for the open loop
gain as a function of frequency.
07
Q.3 (a) Derive the expression for the closed loop voltage gain, input resistance and output
resistance of voltage series feedback amplifier.
07
(b) Implement an integrator using Op-Amp. Obtain the expression for the output voltage
V0.Sketch the output waveform for an input square waveform. Show the frequency
response of an ideal and a practical integrators.
07
OR
Q.3 (a) Explain the working of a Voltage to Current converter with floating load. Illustrate the
application of this circuit as a Zener diode tester.
07
(b) Show how Op-Amp can be used as an averaging, summing amplifiers using non inverting
configuration.
07
Q.4 (a) Explain the application of Op-Amp as : (i) Peaking Amplifier (ii) Schmitt Trigger 07
(b) Explain the operating principle of a Phase Locked Loop. 07
OR
Q.4 (a) Explain with a neat circuit diagram and waveforms, the operation of a monostable
multivibrator using 555 timer.
07
(b) Design a Delyiannis-Friend circuit with f0= 12.5 kHz, Q= 10, and mid band gain H= 26 dB. 07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? V(OLD) EXAMINATION ? SUMMER 2019
Subject Code:151003 Date:06/06/2019
Subject Name: Integrated Circuit and Applications
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Which type of feedback is used in inverting op-amp? Derive exact expressions for voltage
gain, input resistance, output resistance and bandwidth for inverting op-amp.
07
(b) Explain following terms related to op-amp:
(1) CMRR (2) PSRR (3) Slew Rate (4) Channel separation in multiple op-amps IC
(5)Equivalent input noise voltage and current (6) Input offset current (7)Input offset
voltage
07
Q.2 (a) (i) Draw and explain the block diagram of Op-Amp 03
(ii) List three open loop op-amp configurations. Why open loop op-amp configuration are
not used in linear application? Mention some of the linear applications of op ? amps?
04
(b) Draw the differential amplifier circuit using single op-amp and derive the expression for
output voltage as a function of input voltages. Comment on its input resistance.
07
OR
(b) Draw the high frequency model of an Op-Amp and Obtain the expression for the open loop
gain as a function of frequency.
07
Q.3 (a) Derive the expression for the closed loop voltage gain, input resistance and output
resistance of voltage series feedback amplifier.
07
(b) Implement an integrator using Op-Amp. Obtain the expression for the output voltage
V0.Sketch the output waveform for an input square waveform. Show the frequency
response of an ideal and a practical integrators.
07
OR
Q.3 (a) Explain the working of a Voltage to Current converter with floating load. Illustrate the
application of this circuit as a Zener diode tester.
07
(b) Show how Op-Amp can be used as an averaging, summing amplifiers using non inverting
configuration.
07
Q.4 (a) Explain the application of Op-Amp as : (i) Peaking Amplifier (ii) Schmitt Trigger 07
(b) Explain the operating principle of a Phase Locked Loop. 07
OR
Q.4 (a) Explain with a neat circuit diagram and waveforms, the operation of a monostable
multivibrator using 555 timer.
07
(b) Design a Delyiannis-Friend circuit with f0= 12.5 kHz, Q= 10, and mid band gain H= 26 dB. 07
2
Q.5 (a) Derive transfer function of Sallen-key low pass filter. 07
(b) Draw and explain working op-amp based full-wave rectifier circuit. How is it better in
performance compared to full-wave rectifier circuit without op-amp?
07
OR
Q.5 (a) Which type of feedback is used in Schmitt trigger circuit? Discuss its operation and derive
expressions for lower and upper threshold voltage. Design the Schmitt trigger circuit for
upper and lower threshold voltage equal to 25 mV and -25 mV. Op-amp maximum output
voltages are ? 14 V. Take ? 15V as op-amp supply voltage.
07
(b) Draw the circuit diagram of triangular waveform generator and explain the operation with
necessary equations and waveforms.
07
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This post was last modified on 20 February 2020