EMI Design Rule Check for 2-Layer Board
EMIStream for 2-Layer Boards consists of 10 design rule check items that are selected and specialized for 2-Layer PCBs. It points out the cause of EMI problems and suggests solutions.
Even if ground and signal are parallel, the length of return current path from the end of signal to the GND pin causes additional emission.
Important to check whether the current loop length between them is the minimum path.
* The capacitor whose loop is the minimum around IC will be checked.