JNTU Kakinada B-Tech 3-1 RT31042 I LINEAR IC APPLICATIONS R13 April 2018 Question Paper

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Code No: RT31042
III B. Tech I Semester Supplementary Examinations, May – 2018
LINEAR IC APPLICATIONS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering and Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
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PART ?A
1 a) What are the properties of dual input unbalanced output differential amplifier? [3M]
b) Define CMRR of op-amp. [3M]
c) Derive the gain of non inverting amplifier. [4M]
d) Draw the schematic of a second order High-pass filter and sketch the frequency
response.
[4M]
e) Mention the applications of 555 timer used as Monostable and Astable operations. [4M]
f) What are the specifications of AD 574 (12 bit ADC) [4M]
PART -B
2 a) Analyze the dual input balanced output configuration of differential amplifier
using DC.
[8M]
b) Write and Explain about DC coupling and cascaded differential amplifier stages.
[8M]
3 a) Briefly explain the various types of IC packages. Mention the criteria for selecting
an IC package.
[8M]
b) With a neat sketch explain the frequency compensation using pole ? zero method.
[8M]
4 a) Explain, how to obtain triangular wave using a square wave generator. [8M]
b) Draw the circuit of Log and Anti log Amplifiers explain its operation.
[8M]
5 a) Compare Active filters with passive filters. [6M]
b) Discuss in detail about band pass and band reject filters.
[10M]
6 a) Explain the operation of astable multivibrator using 555 IC Timer. [8M]
b) Design a Mono stable multivibrator for 3ms pulse width.
[8M]
7 a) Draw the circuit of weighted resistor DAC and derive expression for output analog
voltage Vo.
[10M]
b) Find out step size and analog output for 4 -bit R-2R ladder DAC, when input is 0 1
1 1 and 1 1 1 1, assume Vref=+5V.
[6M]
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R13
SET – 1