width-dependent statistical leakage modeling for random dopant induced threshold voltage shift
Statistical behavior of device leakage and threshold voltage shows a strong width dependency under microscopic random dopant fluctuation. Leakage estimation using the conventional square-root method shows a discrepancy as large as 45\% compared to the real case because it fails to model the effective V T shift in the subthreshold region. This paper presents a width-dependent statistical leakage model with an estimation error less than 5\%. Design examples on SRAMs and domino circuits demonstrate the significance of the proposed model.
leakage random dopant fluctuation process variation