mcsquare
Junior Member level 1
various circuits grounded on the same ground plane can cause voltage drops across the ground plane. These various voltage drops can create additional currents in the circuit lines, therefore causing round loop coupling in the various circuit. this phenomenon is always been discussed in PCB level. how about the various integrated circuits within a microchip? does ground looping occur? usually the ground of the circuits will be connected to a wide metal (ground plane), then it will rout to the bond pad. will it cause ground looping, cause most fo the circuits will share the same ground bus.