Within-Chip Variability Analysis

Current integrated circuits are large enough that device and interconnect parameter variations within a chip are as important as those same variations from chip to chip. Previously, digital designers were concerned only with chip-to-chip variability, for which analysis techniques exist (e.g.[1,2]); concern for within-chip variations has been in the domain of analog circuit design.
In this paper, we lay the groundwork needed to analyze the impact of inter-chip variations on digital circuits and propose an extreme-case analysis algorithm to efficiently determine the worst case performance due to such variability