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.