Charge-based analytical model for the evaluation of power consumption in submicron CMOS buffers

The authors present an accurate analytical method for analyzing the power consumption in CMOS buffers. It is derived from the charge transferred through the circuit and makes use of the physically based MM9 MOSFET model (Velghe et al., 1994), (Foty et al., 1997) as well as a modified Sakurai alpha-power law model. The resulting analytical model accounts for the effects of input slew time, device sizes, carrier velocity saturation effects, input-to-output coupling capacitance, output load, and temperature. Results are compared to HSPICE simulations (level 50) and to other models previously published considering a large set of parameters for a 0.18 and 0.35 μm technologies, showing significant improvements