How accurate is Calibre xRCs extraction?
A. Calibre xRC’s parasitic extraction engine is pattern-based, which means that the engine fractures nets into pre-defined patterns and uses the characterization of these patterns to determine the parasitics of the entire net. The patterns can be characterized to any level of accuracy without affecting execution time. This approach allows Calibre xRC to generate very accurate results without requiring increased runtimes. Calibre xRC uses a 3D extraction methodology, but bear in mind that in the end it really doesn’t matter if you use a 2D process a 3D process, or something in between. What does matter is the accuracy of the results that the process gives you. A 3D process that only provides 20% accuracy is not as good as a process that provides 10% accuracy. One indication of Calibre xRC’s accuracy is that several pure-play fabs use Calibre xRC internally for cell characterization.
