Switching Noise in VLSI Packages

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Table of Contents

PPT Slide

PPT Slide

PPT Slide

PPT Slide

Switching Noise in VLSI Packages

Electrical Trends

High Frequency Design Issues

Switching Current Through Bypass Capacitor or Inductor

1970’s Lumped R & L Network

1980’s Complex Power Design

1990’s - 2D Mesh Network

Wagon Wheel Model

Core Switching Currents

CMOS Transfer Characteristics

High Frequency Noise Margin as Percentage of Power Supply

Package Inductance Can Exceed Noise Margin

Proper Electrical Design Can Reduce Package Inductance

High Frequency Noise as Percentage of Power Supply

High Frequency Noise as Percentage of Power Supply

High Frequency Noise as Percentage of Power Supply

PCB Experiment

Simulated Noise in PCB

Measured Noise in PCB

Conclusions

Author: Richard Wheeler

Email: richard@wheeler.com

Home Page: http://www.wheeler.com

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