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Roll No.
(c) Give advantages of CMOS over NMOS & PMOS.
Total No. of Questions : 06
[Total No. of Printed Pages : 04
(d) What is Pseudo NMOS logic ?
ESS-196
B.Tech. (New Scheme) Examination, 2025
(Sixth Semester)
VLSI DESIGN
EL-603
Time : 3 Hours
[Maximum Marks : 60]
Note : Question No. 1 is compulsory. Attempt any two parts from remaining questions.
1.
Write short Answers type questions : 5x2=10
(a) What are different types of FETS ? Compare them.
(b) Define Aspect Ratio.
2.
(c) Give advantages of CMOS over NMOS & PMOS.
(d) What is Pseudo NMOS logic ?
(e) What is the function of Schmitt trigger circuit ?
(a) Discuss the simulation done at various steps of VLSI design flow. 5
(b) Discuss the following related to IC Fabrication : 5
(i) Photolithography
(ii) Wafer Preparation.
(c) Describe the structure and transfer characteristics of Enhancement mode MOSFET. 5
3.
(a) Explain the working of MOSFET with the help of Energy band diagram. 5
(b) Discuss the short channel effects of MOSFET. 5
4.
(c) Draw Large signal Model of MOSFET and define all associated parameters. 5
(a) Derive the equation for noise margin and power dissipation for CMOS Inverter. 5
(b) Discuss the effect of threshold and supply voltage on delay and power dissipation. 5
(c) Discuss the limitations of CMOS for nano scale design. 5
5.
(a) Implement Full subtractor circuit using CMOS inverter. 5
(b) Discuss the working, features and applications of Transmission Gate logic. 5
(c) Write a short note on Pseudo NMOS logic Design. 5
6.
(a) What is the difference between SRAM & DRAM? Also explain cell Designing using CMOS for Both type. 5
(b) Realize NAND based SR latch using CMOS and discuss the timing aspects. 5
(c) Write a short note on semiconductor memories. 5