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MU Information Technology (Semester 3)
Analog & Digital Circuits
December 2014
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

Solve any five
1 (a) Convert (41.62)8 to decimal, binary and hexadecimal
4 M
1 (b) Compare BJT and FET.
4 M
1 (c) Why Zener diode is used as regulator?
4 M
1 (d) Define (i) Slew rate (ii) CMRR. What are the typical values of slew rate and CMRR for Op-amp IC-741?
4 M
1 (e) Convert JK-flip flop to D flip flop.
4 M
1 (f) What do you mean by Universal gate? Implement Ex-Or gate using NAND gate.
4 M

2 (a) What is the need of biasing? Explain Voltage divider bias and locate Q point.
10 M
2 (b) Design half adder using VHDL.
5 M
2 (c) Simplify \begin{align*} AB+B+&\overline{AC}+ A\overline{B}C ( AB+C) \\ &AB+B+\overline{AC}+ A \overline B C (AB+C) \end{align*}
5 M

3 (a) Minimize the following Boolean function using K-map.
F(A,B,C,D)=?m(0,3,7,11,15)+d(1,2,5)
10 M
3 (b) Explain Differentiator using Op-amp
5 M
3 (c) Explain the working of Liquid Crystal display.
5 M

4 (a) Design and implement 4 bit binary to gray code converter.
10 M
4 (b) Implement F(A,B,C,D)=?m(1,2,5,11,14)+d(0,3) using 8:1 multiplexer.
5 M
4 (c) Explain inverting amplifier using Op-amp expression for output voltage.
5 M

5 (a) Explain the working of astable multi-vibrator using IC-555. Design astable.
10 M
5 (b) Differentiate between combinational and sequential logic circuits.
5 M
5 (c) Design mod-3 up counter using JK flip-flop.
5 M

Write notes on Any Four:-
6 (a) Instrumentation amplifier using 3-Op-Amp.
5 M
6 (b) Shift registers.
5 M
6 (c) Race around condition
5 M
6 (d) Current mirror circuit
5 M
6 (e) Multiplexers and De multiplexers.
5 M

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