13A04701062017.pdf - R13 Code 13A04701 B.Tech IV Year I Semester(R13 Supplementary Examinations June 2017 VLSI DESIGN(Common to ECE EIE Time 3 hours

13A04701062017.pdf - R13 Code 13A04701 B.Tech IV Year I...

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Code: 13A04701 B.Tech IV Year I Semester (R13) Supplementary Examinations June 2017 VLSI DESIGN (Common to ECE & EIE) Time: 3 hours Max. Marks: 70 PART – A (Compulsory Question)***** 1 Answer the following: (10 X 02 = 20 Marks) (a) What is Moore’s law? State various IC technologies on the basis of number of transistors on a chip. (b) Define threshold voltage with suitable equation of a MOS device. (c) What is the figure of merit of a MOS transistor? Mention the suitable expression for figure of merit. (d) Design a stick diagram for NMOS inverter. (e) Explain working of pass transistor logic. (f) Design a two input CMOS NAND gate with neat sketch. (g) Explain the working of a magnitude comparator. (h) Compare CPLD and FPGA. (i) Write a short note on design capture tools. (j) Explain controllability and observability. PART – B (Answer all five units, 5 X 10 = 50 Marks)UNIT – I 2 Explain NMOS fabrication process flow with neat diagrams. OR 3 Draw V-I characteristics of NMOS transistor. Explain its operation. Derive the drain to source current equation in saturation and resistive region. UNIT – II 4 Design a stick and layout diagram for CMOS inverter and two input n-MOS NAND OR 5 (a) Define fan-in and fan-out. Explain their effects on propagation delay. (b) What do you mean by inverter delay? Explain. UNIT – III 6 What are the alternate gate circuits are available, explain them with suitable sketch? OR 7 Explain about VLSI physical design floor planning. UNIT – IV 8 Implement arithmetic logic unit to perform both arithmetic and logic functions using a full adder. OR 9 Explain the design flow of FPGA. UNIT – V 10 (a) What is meant by synthesis? Explain the circuit synthesis design methods. (b) What is meant by Simulation? Explain the various VHDL simulations. OR 11 Explain various design capture and verification tools. ***** R13

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