Design and analysis of thin-BOX FD/SOI devices for low-power and stable SRAM in sub-50nm technologies

Abstract

This paper demonstrates viable device design options for low-leakage and robust SRAM in sub-50nm FD/SOI technology. We explore the possibilities of reducing the body-doping of FD/SOI devices with proper tuning of back-gate bias or gate workfunction to achieve a given leakage target. The reduction of body-doping density helps reduce the effect of the random dopant fluctuation (RDF), while the Vt and leakage are controlled using the back-gate bias. Our analysis show that, body-doping reduction combined with back-gate biasing is the most efficient FD/SOI device design for low-leakage and robust SRAM. Copyright 2007 ACM.