A Simple MOSFET Model Suitable for Fast Timing Analysis

We present a simple MOSFET model which represents a MOSFET as a gate-modulated resistance. Such a model leads to a special structure in the circuit equations which lends itself to rapid evaluation. In spite of its simplicity, the model makes excellent predictions of waveform propagation with a minimum of characterization effort. The parameters of the model are well-correlated with major technology variables, making the model potentially suitable for applications such as variability prediction. The purpose of this model is to provide a basis for analytical work, with special emphasis on timing analysis. This is an area which is currently difficult due to the complexity of current MOSFET models. So after introducing the model, and explaining how it can be characterized, we will propose several application we believe to be good prospects for future research.