Accurate analytical delay expression for short channel CMOS SOI inverter using Monte Carlo simulation

This payer reports on an analysis of propagation delay tau(D) for deep sub- micron CMOS/SOI inverters. We derive simple propagation delay expressions f or step and ramp inputs, using Monte Carlo simulation. These expressions co nsist of linear combinations of time constants. As a physical device simula tion tool, the Monte Carlo method is well adapted to such a study, since it does not require any analytical model of electrical device parameters. The validity of the above expressions is critically checked via Monte Carlo si mulation of a wide range of inverters under various load conditions. The di screpancy between calculated and simulated propagation delay is less than 1 0%. (C) 1999 Elsevier Science Ltd. All rights reserved.