JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year ANALOG AND DIGITAL IC APPLICATIONS Previous Question Paper (July/August - 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
Answer all questions. (25 Marks)
What is the function of level translator?
Answer
A level translator is used in direct-coupled amplifiers to shift the DC voltage level of the signal to zero at the output, ensuring that subsequent stages are not biased incorrectly by the cumulative DC offset.
What is PSRR of Op-Amp?
Answer
Power Supply Rejection Ratio (PSRR) is defined as the ratio of the change in input offset voltage to the change in power supply voltage producing the variation, typically expressed in decibels (dB). It measures the ability of an Op-Amp to maintain its output voltage despite fluctuations in the power supply.
What are the advantages of active filters over passive filters?
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What is the function of all pass filter?
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Describe the important characteristics of Phased Locked Loop (PLL).
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Differentiate between Counter type ADC and Successive approximation ADC.
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Draw the truth table of seven segment Decoder.
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In terms of power consumption compare CMOS with TTL.
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Write the characteristics table of JK Flip-Flop
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What are the applications of counters?
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Part B
Answer any one question from each unit. (50 Marks)
Explain how the op-amp is used as integrator with necessary equations and draw the input and output waveforms by considering the square wave as input.
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Write the characteristics of the ideal op-amp. Write the characteristics and draw the pin diagram for 741 op-amp.
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Explain the Wein Bridge Oscillator using operational amplifier? Also derive the expression for frequency of oscillations.
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Design a first order low pass filter for the following specifications: Pass band voltage gain=2, Cut-off frequency fc=10 KHz. Draw the frequency Response.
Pass band voltage gain=2
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Cut-off frequency fc =10 KHz. Draw the frequency Response.
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Explain the R-2R digital to analog converter with necessary sketches and expressions.
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Explain the operation of the PLL with the help of the block diagram.
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What is interfacing? Explain interfacing between low voltage TTL and low voltage CMOS logic.
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Design a priority encoder for 16-inputs using two 74×148 encoders.
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Design a 4-bit binary synchronous counter.
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Write a short notes on:
SRAM timing
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Dynamic RAM.
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