h-gamma

Abstract

Recently a probability interpretation of moments wm proposed as a compromise between the Elmore delay and higher or&r mommt matching for RC timing estimation By modeling RC impufses as tinze-sht~ed incomplete gamma distribution functions, the delays could be obtained via table 100tip using a gamma integral table and the first three moments of the imptise response. However, while this approximation worti well for many examples, it struggles with responses when the metal resistance becomes dominant, andproduces results with impractical h.meshz~values.