Download JNTUA M.Tech 2nd Sem 2016 February 9D06106c Low Power VLSI Design Question Paper

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Code: 9D06106¢c

M.Tech I Semester Regular & Supplementary Examinations February 2016

LOW POWER VLSI DESIGN

(Common to DSCE & DECS)

(For students admitted in 2011, 2012, 2013, 2014 & 2015 only)

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Time: 3 hours Max Marks: 60

Answer any FIVE questions

All questions carry equal marks

1. (a) What are the factors that make power an important design constraint in today’s VLSI design? List and explain.
2. (b) What are the advantages and disadvantages of Silicon-on-insulator?

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3. (a) Draw the cross sectional diagram of optimized twin-well BICMOS structure and explain the process.
4. (b) Describe integrated digital CMOS process.
5. (a) What are the advantages of copper interconnects for deep submicron CMOS/BiCMOS structures.
6. (b) Explain about low power CMOS circuit design technique.
7. (a) Discuss about MOSFET model parameters related to trans-conductance.

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8. (b) What are the limitations of MOSFET models? Mention some of MOSFET model applications.
9. (a) Draw the circuit diagram of common emitter BICMOS drive configuration and explain the operation with Isp — Vsp characteristics.
10. (b) Draw the circuit diagram of two-input-CMOS NOR gate and explain its operation with the help of truth table.
11. (a) Compare the advanced BICMOS NAND (two input) implementations with neat circuit diagram.
12. (b) Briefly explain about ESD — free BICMOS circuits.

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13. (a) Explain about design quality measures for latches and flip flops.
14. (b) Draw a transmission gate based dynamic flip flop and explain its operation.
15. (a) Discuss about power reduction process in clock networks.
16. (b) Describe the power consumption in a 4-transistor SRAM cell.

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