Download AKTU B-Tech 5th Sem 2016-2017 Integrated Circuits Nec 501 Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2016-2017 Integrated Circuits Nec 501 Question Paper

Printed Pages: 3 NEC-501
(Following Paper ID and Roll No. to be ?lled in your
Answer Book)
Paper II): 2012357 Roll No,
B.TECH. .
Regular Theory Examinatioh (Odd Sem-V), 2016-17
' INTEGRATED CIRCUITS
Time .? 3 Hours Max. Marks : 100
SECTION -A
1. Attempt all parts. All parts carry equal marks. Write
answer of each part in short. (10XZ=20)
a) Design a multiple feedback Narrow Band Pass ?lter
with fc =1kHz, Q = 3 andA=10.
b) For a ?rst order Butterworth high?pass ?lter,
evaluate the value of R if C = 0.0047 ?F and
fc = 10 kHz.
c) Implement F = AB+K 13 using AND-OR-INVERT
logic.
(1) Why CMOS NAND is preferred over CMOS NOR?
e) Name the circuit that is used to detect the peak value
of non-sinusoidal waveforms. Explain the operation
with neat circuit diagram.
f) Draw and explain the generalized impedance
converter circuit.
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NEC-501
g) What is the advantage of widlar current source over
constant current source?
h) For a dual slope ADC, t1 is 83.33ms and the
reference voltage is lOOmV. Calculate t2 if Vi is
(i) lOOmV and (ii) 200mV.
i) Which block of PLL decides capture range? Explain.
j) State the reasons for the offset currents at the input
of the op-amp.~
SECTION - B
Attempt any ?ve questions from this section
(5 ><10=50)
For 555 astable multivibrator R A = 4.7kQ, RB = le and
C = 1 pF. Determine the positive pulse width, the negative
pulse width, and the free-run?ning frequency. What is the
duty cycle of output waveform?
Why we need B] T base current compensation mirror
circuit? Draw the circuit-and express relation between Ire
and IQ for same.
f
Explain the working of PLL with suitable block diagram.
Write down the different applications of PLL.
Realize a simpler CMOS implementation of clocked SR
?ip ?op. Also explain the working of circuit.
Design a wide band pass ?lter with lower cutoff?equency
fL = 200 Hz, higher cutoff frequency fH = lkHz and a
passband gain = 4?
Explain working of precision ?ll] wave recti?er with
necessary waveform.
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10.
11.
12.
N EC-50l
Draw the circuit of KHN ?lter and derive the expression
for its voltage gain.
Explain the types of phase detector with suitable circuit
diagram and input-output waveforms.
SECTION - C
Attempt any two questions from this section
(2 x 1 5=30)
Explain the generation of square and triangular
waveforms ?'om astable multivibrator Operation using
op?amp. Also ?nd expression of the time period for both
cases.
a) Design a CMOS half adder circuit with inputs A & B.
b) Derive the formula for VIL and VI? of CMOS inverter.
Explain the circuit of Wilson MOS current mirror. A150
discuss how it, can be improved. Draw the circuits and
?nd expression of Io for both,? Wilson and modi?ed
Wilson current mirrors. >
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