10 May 2007 A stochastic model of digital switching noise
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Abstract
In fully CMOS digital integrated systems, switching activity of logic gates is the source of the so-called "digital noise". Together with interconnections parasitics, digital switching noise is known to cause "bouncing" effects, i.e. oscillations of on-chip supply and bias voltages, which can remarkably degrade overall system performance. Digital switching is a completely deterministic process, depending on both circuit parameters and input signals. However, the huge number of logic blocks in a digital integrated system makes digital switching a cognitively stochastic process. Therefore, logic transition activity can be analyzed using a stochastic approach. In this paper, we model the digital switching current as a stationary shot noise process, and we derive both its amplitude distribution and its power spectral density.
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Giorgio Boselli, Giorgio Boselli, Gabriella Trucco, Gabriella Trucco, Valentino Liberali, Valentino Liberali, "A stochastic model of digital switching noise", Proc. SPIE 6590, VLSI Circuits and Systems III, 65901P (10 May 2007); doi: 10.1117/12.722082; https://doi.org/10.1117/12.722082
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