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

Code No: R05310401 Set No. 1
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
? ? ? ? ?
1. (a) discuss the use of constant bias circuit in operation of differential amplifier.
(b) Analyze the dual input balanced output configuration of differential amplifier
using DC. [8+8]
2. (a) discuss how the input offset voltage compensated for?
(b) How fast can the output of an op - amp change by 10V, if its slew rate is 1
V/µs.
(c) describe thermal drift & slew rate. [6+4+6]
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) Explain, How to find triangular wave using a square wave generator.
(b) With the help of a neat circuit diagram discuss the working of a logarithmic
amplifier. [8+8]
5. (a) describe Bessel, Butterworth and Chebysher filters, and compare their frequency
response.
(b) Sketch the circuit diagram of band elimination filter and design a wide band-
reject having fH=200Hz and fL=1KHz. presume necessary data. [8+8]
6. discuss an application in which the 555 timer can be used as Astable multivibrator.
[16]
7. (a) Compare R - 2R and weight resistor kinds of DACs.
(b) Write short notes on A/D converters.
(c) describe the subsequent terms as related to DAC:
i. Linearity
ii. Resolution. [8+4+4]
8. elaborate all basic blocks of analog multiplexer? discuss how the data selections
process is performed it. [16]
? ? ? ? ?
1 of 1
Code No: R05310401 Set No. 2
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
? ? ? ? ?
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) explain the Pole - Zero and Dominant pole compensation techniques for an
op - amp.
(b) An op - amp has a slew rate of 1.5V/µs. What is the maximum frequency of
an output sinusoid of peak value 10 V at which the distortion sets in due to

Earning:   Approval pending.