If you have been to one of the signal integrity classes, you will know about ground bounce. And VCC bounce. It’s one of these bad things that really can ruin a project.
This group of students is lucky enough to have Eric Bogatin as their instructor, and obviously, they go through ground bounce as well. They even build a board showing that effect. Some of the students got inspired to write a small piece for the Signal Integrity journal: “We Live in White Space“. A fast and easy read.
When we do the local engineering university (DTU, Danish Technical University outside Copenhagen) summer course on signal integrity, there is a similar lab exercise. This includes both a board layout by the students and some measurements on a lab board that can demonstrate this effect. This is the lab board we use:
We should maybe include a number of eval boards from various chip vendors, as the bigger (BGA) devices are too much to put on a student board in the class setting – yet may still have a significant ground bounce or VCC bounce.
What bigger device have you used recently with significant ground bounce?