A new analytic model of simultaneous switching noise in CMOS systems

A new accurate and analytic model for SSN (Simultaneous Switching Noise) on both power supply and ground lines in CMOS circuit is presented. While most prior works were concentrated on the case in which all the drivers switch at the same time, this paper considers the influences of switching of the some drivers on the quiet drivers, and reveals that the proposed model is more accurate than the existing ones in this case. This result can provide some useful design guide of CMOS driver circuits. We confirmed that the proposed model is more accurate than the existing ones through HSPICE simulation using Level 28 MOS model.