Jawaharlal Nehru Technological University Kakinada 2007 B.Tech Electronics and Communications Engineering LINEAR IC APPLICATIONS - Question Paper

the slew rate limitation? [8+8]
3. (a) Design a differentiator to differentiate an input signal that varies in frequency
from 10 Hz to about 1KHz. If a sine wave of 1V peak at 1000 Hz is applied
to this differentiator draw the output waveforms.
(b) Why active differentiator circuits are not used in analog computer to solve
differential equations. [10+6]
4. (a) define the operation of logarithmic amplifier using op - amp.
(b) List the conditions for oscillation in all the 3 kinds of oscillators, namely,
RC phase shift, Wien - bridge and quadrature oscillators. [8+8]
5. (a) Draw the wide band reject filter circuit and also the frequency response of it.
(b) Draw the schematic diagram of an all pass filter and determine the phase shift
f ranging from the input and output at f = 2kHz. [8+8]
6. (a) Configure a 555 timer as a Schmitt trigger and discuss.
(b) discuss frequency translation and FSK demodulation using 565 PLL. [8+8]
7. (a) discuss the difference ranging from Analog to Digital converter and Digital to
Analog converters through underlying equations.
(b) Illustrate 1 application every of Analog to Digital and Digital to Analog
converters. [6+10]
8. (a) discuss the function of a typical adjustable voltage regulator. How can you
increase the current driving capacity of the regulator?
(b) define the principle of working of a balanced modulator using op - amp.
provide the applications of it. [6+10]
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Code No: R05310401 Set No. 3
III B.Tech I Semester Regular Examinations, November 2007
LINEAR IC APPLICATIONS
(Electronics & Communication Engineering)
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
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1. (a) discuss how large open circuit voltage gain of an op - amp can be found
by using cascading of differential amplifier stages.
(b) discuss ac analysis of differential amplifier. [8+8]
2. (a) compute the effect of variation in power supply voltages on the output offset
voltage for an op - amp circuit.
(b) Why frequency compensation is needed for an op - amp and discuss frequency
compensation technique using suitable diagrams. [6+10]
3. (a) Design a differentiator to differentiate an input signal that varies in frequency

Earning:   Approval pending.