A Charge based MOSFET Model for Low-Voltage Mixed-Signal Applications

Recent developments towards lower voltages [1, 2, 3, 4] pose increasingly stringent demands on compact device model accuracy. We present a new approach to dynamic MOSFET modeling which is especially suited for the simulation of low-voltage mixed analog digital circuits. The model is based on terminal charges and conductive currents which are determined from transient current/voltage data. These data sets can be easily obtained through measurement or simulation of the devices. Using a physically motivated interpolation method the model supplies the accurate current/charge data and their derivatives for given terminal voltages.