A new multi-ramp driver model with RLC interconnect load

As the feature size is scaled down to 90nm and below, fundamental modelling changes, such as the nonlinearity and higher frequencies of signals, require driver-load models to take into account propagation delay and slew rates. The conventional single Ceff (one-ramp) with lumped RC model is no longer accurate. In this paper we propose a new multi-ramp model with general RLC interconnects as loads. This new model accurately predicts both the 50% delay and the overall output waveform shape with inductance effects.