Test Paper - Linear Integrated Circuits and Design - Mumbai University - Electronics Engineering - 5th Semester - 2010, Study notes of Electronics

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LTrt~Y' J.. n J--e.1Y-CLl-~ (REVISED COURSE) (3 Hours)

Question No.1 is compulsory. Attempt any four questions out of remaining six questions. Assume suitable data if required and state it clearly. Figures to the right indicate full marks.

" ,2. JU~"G~ro CI 'Y ~LU f,j 0 r!.,.S'9"" d AN- [Total Marks: 100

Con. 3447-10.

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(i) For this non-inverting amplifier R1 = 1KQ and Rf = 10 KQ. Calculate the maximum output offset voltage due to Vas and lB' The op-amp is LM with Vas = 10 mv and IB = 300nA, los = 50nA.

(ii) Calculate the value of Rcompneeded to reduce the effect of lB' (iii) Calculate maximum output offset voltage if Rcompas calculated in (ii) is connected in the circuit.

(b) Define following terms pertaining to Phase Locked Loop (PLL) :- (i) Free running frequency (ii) Capture range.

(c) Design a differentiated to differentiate input signal that varies in frequency from

10Hz to about 1 KHz.

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2. (a) Find V0 for the adder-subtractor shown in given figure - 10

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(b) What is difference between normal rectifier and precision rectJft~r? With proper 10 derivation and circuits, explain the working of full wave rectifier.

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Con. 3447-AN-4216-10. 2

3. (a) Design a Second-order low pass filter at a high cut-off frequency of 1KHz. Draw 10 frequency response of the network. (b) What is comparator? Draw the characteristics of an ideal comparator and that of 10 a commercially available comparator. What is the difference between a basic comparator and the schmitt trigger?
4. (a) (i) Explain about "The IC 555 as an Astable Multivibrator".. 10 (ii) In the following circuit RA = 2.2 KO, Rs = 3.9 KO and C = 0.1 JlF. Determine the positive pulse width, tc' free running frequency of negative pulse width td' Va.

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(b) Compare different types of ADCs based on their working principle. Explain working 10 of anyone type of Analog to Digital converter.

5. (a) What is the function of voltage regulator? Explain in detail about fixed voltage 10 series regulator. (b) What is an Instrumentation Amplifier? Derive the output gain of Instrumentation 10 Amplifier using three op-Amp. State its characteristics..

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6. (a) Explain in detail about "Frequency Multiplier, and application of Phase Locked 10 Loop". (b) Draw the schematic diagram of Weinbridge Oscillator. Explain its working in detail. 10
7. Write short notes on any four :- (a) Mono-shot Multivibrator (b) Sample and Hold Amplifiers (c) Pr~cision Rectifiers (d) Inverting Amplifier (e) Analog "Switches.

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