JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III ANALOG AND DIGITAL IC APPLICATIONS Previous Question Paper (January/February - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is a differential amplifier?
Answer
A differential amplifier is an electronic amplifier that amplifies the difference between two input voltages while suppressing any voltage common to both inputs. It is the fundamental building block of operational amplifiers.
Explain about chip size and circuit complexity.
Answer
Chip size refers to the physical area of the semiconductor die; smaller sizes reduce manufacturing costs and parasitic capacitance. Circuit complexity relates to the number of active and passive components integrated onto a single chip. Advances in fabrication technology allow for higher integration density, enabling more complex functions within a smaller chip area.
Describe the features of 723.
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What is the cut off frequency of a high pass filter and what is effect of order of the filter on filter response?
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What is a bistable multivibrator?
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Explain in brief about stability of a converter.
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What is priority Encoder?
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Give the classification of Integrated Circuits.
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What are shift registers?
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Draw the logic diagram of about Decade counter.
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Part B
What is an instrumentation amplifier? Derive the expression for voltage gain of instrumentation amplifier.
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Explain in detail about sample and hold circuits.
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Explain in detail about V-I and I-V converters using op-amps.
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In an op-amp I/V converter circuit, VO is 6V, RF = 470 KΩ. Determine the value of short circuit current ISC.
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Determine a second order BPF using op amps, given 2K = 1.414, to pass signals in the band of 2 KHz to 20 KHz.
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Explain the operation of Schmitt trigger. Discuss its characteristics and limitations.
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Draw and explain the operation of Wein bridge oscillator and derive its frequency expression?
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Explain the saw tooth wave generator with neat circuit diagram?
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With neat block diagram, explain successive approximation type A/D converter in detail and compare it with other ADCs.
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Draw the circuit diagram of Schmitt trigger using op-amp and explain its operation with relevant waveforms.
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Design a 3 input 5-bit multiplexer? Write the truth table and draw the logic diagram. Which IC is used for it.
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Give the design considerations of parity encoder and explain the operation with relevant circuit.
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With a neat diagram, explain the architecture of RAM & ROM and also explain about static DRAM.
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Design a synchronous JK counter that goes through the following states 2, 4, 7, 2, 4..... . Is the counter self-starting?
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