Analysis and Measurement of Capacitive Coupling in Integrated Circuits

Parasitic electromagnetic couplings result in the transfer of interfering energy from the interference source to the interference receiver. Inside the IC´s the principal sources of interference are usually the clock circuits, output drivers and other circuits with low output impedance. The most frequent receivers of interference are the input circuits, flip-flops and circuits with high input impedance. The small distances of leads result in increased signal crosstalk inside the integrated circuit.