Simultaneous switching noise analysis on bus lines using coupled circuit and electromagnetic simulation

Simultaneous switching noise (SSN) on bus lines is calculated by accurately modeling printed circuit boards and LSI packages using coupled circuit and electromagnetic simulation. Contribution of crosstalk and ground bounce to SSN is qualitatively estimated. With relatively low inductance package such as BGA, the main cause of SSN is cross talk which results in increasing SSN voltage along the length of bus line. The results of simulation are compared with those of experiment, the both results agree within 10% difference at maximum peak of SSN.