B.TechSemester 52025-26Integrated CircuitsBEC501

Integrated Circuits (BEC501) - AKTU Question Paper 2025-26

B.Tech · Semester 5 · Free PDF Download

This is the official AKTU Integrated Circuits Previous Year Question Paper for B.Tech Semester 5, academic session 2025-26. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 5

Session:2025-26

University:AKTU / UPTU

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Questions Asked in 2025-26

Integrated Circuits (BEC501) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 2 x 07 = 14

a
Explain the role of capacitor used in IC 741
b
Sketch the circuit of current to voltage converter using op-amp
c
State any two applications of active filters
d
State the applications of multivibrator
e
What role does PDN play in CMOS implementation?
f
Draw the circuit of AM detector using PLL
g
EXOR gate can be used as phase detector. Justify the statement

Section BAttempt any three of the following: 07 x 3 = 21

a
Find out the overall gain of an op -amp IC741 giving its cascaded equivalent circuit derived for its three stages. Also drive the relationship between f t and Slew Rate for IC741
b
Design the KHN circuit to realize a high-pass function with f0= 10 kHz and Q =
2
Choose C=1nF.What is the value of high -frequency gain obtained? What is the center -frequency gain of the bandpass function that is simultaneously available at the output of the first integrator?
c
Describe temperature compensated Log amplifier using two op-amps & explain its operation
d
Sketch the logic -gate implementation of an SR flip -flop utilizing two cross - coupled NAND gates. Clearly label the output terminals and the input trigger terminals. Provide the truth table and describe the operation
e
Explain the block diagram of IC 555. Design a 555 timer as astable multivibrator with an output signal with frequency 2KHz and 75% duty cycle

Section CAttempt any one part of the following: 07 x 1 = 07

a
Calculate the various parameters like input impedance, output impedance, voltage gain, transconductance for output stage of IC 741
b
Calculate the voltages and currents of various transistors for input stage of IC 741 after completing the DC analysis
a
Design an Instrumentation amplifier whose gain can be varied continuously over the range 1≤A≤1000. Assume all other relevant details
b
Derive of impedance offered by generalized impedance converter. Also calculate the values of resistances and capacitors to simulate an inductor of 1mH using it
a
Explain zero crossing detector and voltage comparator with the help of suitable diagram and waveforms
b
Discuss analog multiplier along with its quadrant operation. Also explain the various applications of it
a
Find the PDN that corresponds to the PUN shown in given figure, and hence the complete CMOS logic circuit. What is the Boolean function realized?
b
Discuss sequential circuit design using CMOS technology. Explain the CMOS implementation of J–K flip-flop with neat circuit diagrams
a
Determine the change in DC control voltage V c during lock, if input signal frequency, f s=20KHz, the free running frequency is 21KHz and the V/F transfer coefficient of VCO is 4KHz
b
Draw the block diagram of a PLL and explain its operation. Explain lock-in- range; capture range and pull-in time of a PLL. List the application of PLL

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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