The Case for Split Ground Planes
Some experts say you should never use a split ground plane. Others say you should use a split ground plane to control noise. When is the right time to split a ground plane? We will explore the impact of a split plane on reducing cross talk and demonstrate with a simple measurement the problem a split ground plane solves really well. Then we’ll look at why, if your design needs to take advantage of the reduced cross talk with a split plane, you are designing your product wrong.