R05310401 Linear Ic Applications B.Tech Question Paper : djriet.edu.in

Name of the College : Dasari Jhansi Rani Institute Of Engineering And Technology
University : JNTUK
Department : Electronics & Communication Engineering
Subject Code/Name : R05310401 – Linear Ic Applications
Year : 2008
Degree : B.Tech
Year/Sem : III/I
Website : djriet.edu.in
Document Type : Model Question Paper

Download Model Question Paper : https://www.pdfquestion.in/uploads/djriet.edu.in/3030-R05310401-LINEAR-IC-APPLICATIONS.pdf

DJRIET Linear IC Applications Question Paper

III B.Tech I Semester Regular Examinations, November 2008 :
LINEAR IC APPLICATIONS :
(Electronics & Communication Engineering)
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions :

Related : Noorul Islam College of Engineering RR320403 Electronic Measurements And Instrumentation B.Tech Question Paper : www.pdfquestion.in/3023.html

Set – I

All Questions carry equal marks :
1. (a) Discuss about dc analysis of Dual input balanced output amplifier.
(b) Why cascading is necessary for differential amplifier and explain its operation. [6+10]

2. (a) Broadly classify the integrated circuits for a wide range of applications.
(b) Explain the operation of op – amp using block diagram.
(c) What is a practical op – amp? Draw its equivalent circuit? [4+6+6]

3. (a) Find V0 for the circuit shown in figure 3
(b) Find R1 and Rf in the practical integrator (lossy integrator), so that the peak gain is 20 dB and the gain is 3 dB down from its peak when ? = 10,000 rad/sec. Use a capacitance of 0.01µF. [8+8]

4. (a) Distinguish between astable, bistable and monostable multivibrators.
(b) Determine VTH and VTL (TL: Lower threshold, TH: upper threshold) and hysteresis of the inverting comparator shown in figure4 [8+8]

5. (a) Explain the advantages of active filter. Explain different configurations of active filter. Discuss their merits and demerits.
(b) List out the applications of VCO 566. [10+6]
6. (a) Explain the significance of each of comparators and operation of 555 timer.
(b) Explain the application of 555 timer as linear ramp generator. [10+6]
7. (a) Explain the operation of a Successive Approximation type analog to digital converter.
(b) Calculate the no. of bits required to represent a full scale voltage of 10V with a resolution of 5mV approximately. [10+6]
8. (a) What is Gyrator circuit? Explain its operation with a neat circuit diagram.
(b) What is a sample and hold circuit? Why is it needed? With neat circuit diagram, describe the operation of an op – amp based sample and hold circuit. [8+8]

Set – II

1. (a) Derive the output voltage of an op – amp based differential amplifier.
(b) List out electrical characteristics of an op – amp. [10+6]
2. (a) What is an op-amp? Why it is called so?
(b) Explain the parameters that should be considered for ac and dc applications of an op-amp.
(c) Draw and explain the three open loop op – amp configurations with neat circuit diagram. [4+7+5]
3. (a) Draw the circuit diagram of a two input non-inverting type summing amplifier and derive the expression for the output voltage.
(b) Briefly explain why negative feedback is desirable in amplifier applications.
(c) How does negative feedback affect the performance of an inverting amplifier? [7+5+4]
4. (a) Design a logarithmic amplifier for positive input voltages in the range 5mV to 50V.
(b) With suitable circuit diagram explain the operation of a triangular wave generator using a comparator and a integrator. [8+8]
5. (a) Draw a band – pass filter circuit with its frequency response curve. Explain its working.
(b) Design a first order wide band reject filter with a higher cutoff frequency of 100Hz and a lower cutoff frequency of 1kHz. Calculate the Q of the filter. [8+8]
6. (a) Explain the operation of a zero crossing detector.
(b) Briefly mention the disadvantages of using zero crossing detector and how it is overcome in Schmitt trigger. [8+8]
7. (a) Draw a schematic diagram of a D/A converter. Use resistance values whose ratios are multiples of 2. Explain the operation of the converter.
(b) Draw the block diagram of a converting 4-bit A/D converter and explain its operation. Sketch the output waveform. [8+8]
8. (a) Explain the use of IC 1496 as AM modulator
(b) What is a sample and hold circuit? Draw the circuit diagram and explain its action. [8+8]