GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (OLD) EXAMINATION — WINTER 2018
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Subject Code:151003
Subject Name: Integrated Circuits And Applications
Date: 27/11/2018
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Explain the internal block diagram of OP-AMP in detail with the function of each block. (07 MARKS)
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Q.1 (b) Which type of feedback is used in inverting op-amp? Derive exact expressions for voltage gain, input resistance, output resistance and bandwidth for inverting op-amp. (07 MARKS)
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Q.2 (a) Explain following terms related to op-amp:
1. CMRR, 2. PSRR, 3. Slew Rate, 4. Input offset current, 5. Input offset voltage. (07 MARKS)--- Content provided by FirstRanker.com ---
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Q.2 (b) Explain the concept of virtual ground in OP-AMP and why open loop op-amp configurations are not used in linear application? (07 MARKS)
OR
Explain application of op-amp (Inverting configuration) as summing, Scaling and averaging circuit. (07 MARKS)
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Q.3 (a) Draw and derive the output voltage in term of input voltage of basic integrator using an op-amp. What are the Problems associated with this configuration? How they are overcome? (07 MARKS)
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Q.3 (b) Explain Schimitt trigger circuit along with circuit diagram and necessary waveforms. State its advantages and applications. (07 MARKS)
OR
Explain triangular wave generator circuit. (07 MARKS)
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Q.4 (a) Analyze second order butterworth High Pass filter. Draw its frequency response and state design procedure. (07 MARKS)
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Q.4 (b) Draw and explain Monostable multivibrator using 555 timer IC. (07 MARKS)
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Draw the circuit diagram of monostable multivibrator using IC 555. Calculate the component values if the controlled door should remain open for 15 secs after a trigger signal is received. The DC voltage available is 10V. (07 MARKS)
OR
Explain operation of Astable multivibrator using IC 555. (07 MARKS)
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Q.5 (a) Design an astable multivibrator for an output frequency of 5 KHz and duty cycle 40%.Consider C=0.047 pF. (07 MARKS)
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Q.5 (b) What are the different types of voltage regulators? Discuss LM317 based adjustable voltage regulator. Indicate bypass capacitors to improve transient response and protective diodes in the connection diagram. (07 MARKS)
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State the applications of operational transconductance amplifier and explain any one with necessary circuit and derivation (07 MARKS)
OR
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Q.5 (a) Draw block diagram of basic PLL and explain operation of each of the blocks. (07 MARKS)
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Q.5 (b) What do you understand by precision rectifier circuit? Illustrate op-amp based full-wave rectifier circuit with its complete functionality. (07 MARKS)
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