CMOS Introduction
Upcoming SlideShare
Loading in...5
×
 

Like this? Share it with your network

Share

CMOS Introduction

on

  • 1,096 views

Introduction to CMOS operation. NOTE: this presentation was animated using Power Point 2007. The animations may not show on Slideshare and thus you may be required to download the material for better ...

Introduction to CMOS operation. NOTE: this presentation was animated using Power Point 2007. The animations may not show on Slideshare and thus you may be required to download the material for better viewing.

Statistics

Views

Total Views
1,096
Views on SlideShare
1,095
Embed Views
1

Actions

Likes
0
Downloads
106
Comments
0

1 Embed 1

http://techno-sphere.blogspot.com 1

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • Different fabrication methods of an INverter BJT is the faster CMOS – consume less power CMOS – does not consume power on steady state on or off. As one of the transistors will always be switched off and no current will flow to dissipate energy. VLSI importance ENERGY EFFICIENCY EASE OF CONSTRUCTION – VLSI IC

CMOS Introduction Presentation Transcript

  • 1. CMOS Style Process -GM
  • 2. MOSFET source drain substrate SiO 2 insulator metal / polysilicon contact gate + - + G S D 1 0 N-type S D n channel nMOS
  • 3. MOSFET source drain substrate SiO 2 insulator metal /polysilicon contact gate - + - G S D 1 0 P-type S D p channel pMOS
  • 4. Inverter pMOS nMOS A A’ pMOS nMOS 1 1 0 V GSp V GSn V DD = +5V V GSn = V i – 0V = 0V – 0V = 0V V GSp = V i – (+5V) = 0V – 5V = -5V When V i = 0V = 5 V GSn = V i – 0V = 5V – 0V = 5V V GSp = V i – (+5V) = 5V – 5V = 0V When V i = +5V pMOS = “ON” nMOS = “OFF” pMOS = “OFF” nMOS = “ON” = 5 = 0 = 0 = 0 = -5 0 1 V i V o
  • 5. Logic Design (NOR Gate) Pull-up network Pull-down network Inputs Inputs NOR Gate A A B B V DD Y 0 0 1 pMOS (1) nMOS (0) A B Y 0 0 1 0 1 0 1 0 0 1 1 0
  • 6. Comparison A A’ pMOS nMOS + Bipolar CMOS Energy efficiency Larger energy dissipation Slower Less Heat Ease of construction Faster More heat Quad-Core AMD Opteron processor AMD Phenom II overclocked with liquid helium ( 6.5 GHz @ - 267 degrees celcius. Samsung Galaxy A A’ +
  • 7. Kthxbai 