Process-Variation Statistical Modeling for VLSI Timing Analysis

  • Authors:
  • Jui-Hsiang Liu;Jun-Kuei Zeng;Ai-Syuan Hong;Lumdo Chen;Charlie Chung Ping Chen

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • ISQED '08 Proceedings of the 9th international symposium on Quality Electronic Design
  • Year:
  • 2008

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Abstract

SSTA requires accurate statistical distribution models of non-Gaussian random variables of process parameters andtiming variables. Traditional quadratic Gaussian model has been shown to have some serious limitations. In particular, it limits the range of skewness that can be modeled and it can not model the kurtosis. In this paper, we presented complex-coefficient quadratic Gaussian polynomial model and higher order Gaussian polynomial model to resolve these difficulties. Experimental results show how our methods and new algorithms expose some enhancements in both accuracy and versatility.