Image may be NSFW.
Clik here to view.
Clik here to view.

The Emergence of Power Integrity Analysis
As the speed of the data signal increases, many reasons including power supply noise lead to the degradation of the high-speed signals. In low power high-speed digital interfaces, it is crucial to characterize the whole system power supply in order to minimize power supply noise in the system. High-speed design failures show up as failures at higher operating frequency, data error rates, cross talk errors...
Power of Power Integrity Analysis in High Speed Digital Designs