A complete methodology for an accurate static noise analysis

  • Authors:
  • Cristiano Forzan;Davide Pandini

  • Affiliations:
  • STMicroelectronics, Bologna, Italy;STMicroelectronics, Agrate Brianza, Italy

  • Venue:
  • GLSVLSI '05 Proceedings of the 15th ACM Great Lakes symposium on VLSI
  • Year:
  • 2005

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Abstract

In signal integrity analysis, the joint effect of propagated noise through library cells, and of the noise injected on a quiet net by neighboring switching nets through coupling capacitances, must be considered in order to accurately estimate the overall noise impact on design functionality and performances.In this work a general macromodel that considers the impact of the cell non-linearity on the noise glitch waveform is proposed, and a new approach that allows to accurately and efficiently modeling the cell non-linear effects in Static Noise Analysis is presented. Experimental results confirm that existing noise analysis approaches based on linear superposition of the propagated and crosstalk-injected noise can be highly inaccurate, thus impairing the sign-off functional verification phase, and demonstrate the effectiveness of our method that can be seamlessly integrated into noise analysis tools.