March 9, 2010

2009 Tamil Nadu State Anna University B.E Electrical and Electronics EC1254 LINEAR INTEGRATED CIRCUITS Question paper

Question paper
PART A-(2*20=40)
1. What are the IC classification.
2. Define etching and diffusion.
3. State any two advantages of MOS technology over bipolar technology in the fabrication IC.
4. Explain the process of oxidation.
5. Define CMRR.
6. List out the ideal characteristics of OP-AMP.
7. Define input offset voltage.
8. Write some linear and non linear applications of op-amp.
9. Draw a voltage follower circuit using op-amp.
10. State some important features of instrumentation amplifier.
11. Draw any one of the clipper circuit using op-amp with input and output waveforms.
12. Define resolution of a DAC.
13. What are the applications of timer IC 555.
14. What is VCO.
15. Define the capture range in PLL.
16. List the basic blocks of IC 555 timer.
17. What is a linear voltage regulator.
18. How the current boosting is achieved in a 723 IC.
19. Name a filter IC and regulator IC.
20. What are the advantages of switching regulators.
PART B-(5*12=60)
21. A) write note on iron implementation. (6)
B) explain how a monolithic capacitor can be fabricated. (6)
22. A) Explain in detail about monolithic IC Technology. (8)
B) how transistors are fabricated in ICs. (4)
23. A) derive the gain of inverting and non inverting amplifier. (6)
B) explain the AC characteristics of op-amp. (6)
24. A) Explain IC 741 op-amp. (8)
B) Derive the condition for DC characteristics of an op-amp. (4)
25. A) Draw the circuit diagram of op-amp differentiator, integrator and derive the output expression. (6)
B) Explain the working of the instrumentation amplifier (6).
26. A) Draw the circuit of a first order and second order active low pass filter and derive its transfer function. (6)
B) Explain the working of op-amp Schmitt trigger with neat circuit diagram and output waveform. (6)
27. A) Draw the astable multivibrator using 555 timer and derive its frequency of oscillation. (6)
B) with neat diagram explain any one of the applications of PLL. (6)
28. A) Explain the IC voltage regulator LM-317. (6)
B) Draw the block diagram of the function generator IC and explain its operation. (6)



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