Gujarat Technological University 2011-6th Sem B.E , 160801 - Integrated Circuits & Application on - Question Paper

GUJARAT TECHNOLOGICAL UNIVERSITY
B E Sem-VI exam May 2011
Subject code:160801
Subject Name: Integrated Circuits & Application
Date:16/05/2011 Time: 10.30 am – 01.00 pm
Total Marks: 70

Seat No.    Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY

B E Sem-VI Examination May 2011 Subject code:160801 Subject Name: Integrated Circuits & Application Date:16/05/2011    Time: 10.30 am - 01.00 pm

Total Marks: 70

Instructions:

1. Attempt all questions.

1.    Make suitable assumptions wherever necessary.

2.    Figures to the right indicate full marks.

Q.1 (a) What is Op-Amp? Draw and Explain the block diagram representation of a 07 typical Op-Amp.

(b) Draw and explain the block diagram of IC 555 Timer    07

Q.2 (a) 1).Explain the ideal voltage transfer curve.

2).Explain the equivalent circuit of practical op-amp.

(b) Why Op-Amp is generally not used in open loop mode? Explain close loop configuration of Op-Amp. And give the advantages of negative feedback.

OR

(b) 1 .An Op-Amp having the following parameters is connected as a non inverting amplifier with Ri=1 kQ and R_F=10 kQ:

And A=200,000, Ri= 2 MQ, Ro=75Q, fo= 5Hz, supply voltage= 15 V,

output voltage swing = 13 v

Compute the values of A_F, Ri_F, R_OF, F_f, and Voot.

2.Define following terms a. CMRR b. PSRR

Q.3 (a) Define Error voltage and Derive its equation for Op-Amp.

(b) Explain the Effect of input offset voltage and input bias current on output offset voltage of Op-Amp.

OR

Q.3 (a) Explain the difference between Bandwidth, Transient Response and Slew Rate.

(b) Design a differentiator to differentiate an input signal that varies in frequency from 10 Hz to about 1 kHz. Draw output waveform if a sine wave of 1V peak at 1000Hz is applied to this differentiator

Q.4 (a) Explain the practical integrator circuit and obtain its output voltage.    07

OR

Q.4 (a) Write a Short note on very high input impedance circuit.    07

& negative precision rectifier.

Q.5 (a) Explain the monostable multivibrator operation of IC 555 Timer and 07 Derive expression for output pulse width.

OR

Q.5 (a) Write a short note on Schmitt trigger.    07

(b) Explain basic Log-amplifier using diode.    07

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Attachment: gujarat-technological-university-2011-b-e-52334-2.pdf

Earning:   Approval pending.