GTU Electrical and Electronic Engineering (Semester 6)
Integrated Circuits & Application
June 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Draw and explain the functional block diagram of IC 555.
7 M
1 (b) Explain the following parameters of OPAMP (i)Input offset voltage (ii)Input bias current (iii)CMRR (iv)Slew rate (v)PSRR
7 M

2 (a) List the advantages of negative feedback, explain any one application of OPAMP in open loop configuration with output waveforms.
7 M
Answer any two question from Q2 (b) or Q2 (c)
2 (b) Define Error voltage and Derive its equation for Op-Amp.
7 M
2 (c) Derive the expression for Voltage gain (AV) and input resistance with feedback (RiF) for voltage shunt feedback amplifier.
7 M

Answer any two question from Q3 (a), (b) or Q3 (c), (d)
3 (a) Explain Schmitt trigger circuit using OPAMP.
7 M
3 (b) What is V to I converter? Explain the circuit of low voltage DC voltmeter.
7 M
3 (c) Explain the practical integrator circuit. Also draw its frequency response.
7 M
3 (d) Explain Instrumentation Amplifier using transducer bridge with its application.
7 M

Answer any two question from Q4 (a), (b) or Q4 (c), (d)
4 (a) Describe a sample and hold circuit and give its applications.
7 M
4 (b) Explain a circuit using OPAMP which can produce triangular waveform at its output.
7 M
4 (c) Explain the application of PLL in FSK demodulation.
7 M
4 (d) Explain IC 555 as a Monostable multivibrator .Give the expression for the time delay.
7 M

Answer any two question from Q5 (a), (b) or Q5 (c), (d)
5 (a) Explain Astable multivibrator using Op-Amp.
7 M
5 (b) Draw the block diagram of PLL and explain each block.
7 M
5 (c) Draw and Explain the block diagram representation of a typical Op-Amp.
7 M
5 (d) Draw and explain a 3 input summing, scaling and averaging circuit using OPAMP.
7 M



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