7EC5 VLSI  DESIGN

UNIT 1 : INTRODUCTION TO MOS TECHNOLOGY-

Basic MOS transistors , Enhancement Mode

transistor action, Depletion Mode transistor action, NMOS and CMOS fabrication.

UNIT 2 : BASIC ELECTRICAL PROPERTIES OF MOS CIRCUITS-

I

versus V

relationship, Aspects of

d s

ds

threshold voltage, Transistor Transconductance g

. The nMOS inverter, Pull up to Pull-down ratio for a

m

NMOS  Inverter and CMOS  Inverter (B

/B

), MOS transistor circuit Model, Noise Margin.

n

p

UNIT 3 : CMOS LOGIC CIRCUITS-

The inverter, Combinational Logic, NAND Gate  NOR gate,

Compound Gates, 2 input CMOS Multiplexer, Memory latches and registers, Transmission Gate, Gate

delays, CMOS-Gate Transistor sizing, Power dissipation.

UNIT 4 :

Basic physical design of simple Gates and Layout issues. Layout issues for inverter, Layout for

NAND  and NOR  Gates, Complex Logic gates Layout, Layout optimization for performance.

UNIT 5 :

Introduction to VHDL, Prolog & other design tools. VHDL Code for simple Logic gates, flip-flops,

shift registers.