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
PCB Experiment
Simulated Noise in PCB
Measured Noise in PCB
Conclusions
Email: richard@wheeler.com
Home Page: http://www.wheeler.com
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