Standard cell sizing for subthreshold operation
ConferentiebijdrageLiu, B., Ashouei, M., Huisken, J.A. & Pineda de Gyvez, J. (2012). Standard cell sizing for subthreshold operation. Design Automation Conference (DAC), 2012 49th ACM/EDAC/IEEE, 3-7 June 2012, San Francisco, USA (pp. 962-967). New York: Association for Computing Machinery, Inc. In Scopus Cited 20 times. Lees meer: Medialink/Full text
Process variability severely impacts the performance of circuits operating in the subthreshold domain. Among other reasons, this mainly stems from the fact that subthreshold current follows a widely spread Log-Normal distribution. In this paper we introduce a new transistor sizing methodology for standard cells. Our premise relies on balancing the N and P network currents based on statistical formulations. Our approach renders more robust cells. We observe up to 57% better performance and 69% lower energy consumption on a set of ISCAS circuits when they are synthesized with our library as opposed to a commercial library in a CMOS 90nm technology.