Modeling of Integrated Circuits as Components of Large Systems.

摘要

Results are presented on generalized approaches to derive radiation-inclusive simplified models of linear and digital microcircuits. Application of the principle of superposition allows generation of a compact small-signal model of the linear microcircuit,with extension of the model to include large-signal saturation effects. The digital microcircuit model is the combination of current-voltage terminal networks with a logical decision function to represent the truth table of the device. The techniques are used to generate terminal models of an integrated-circuit operational amplifier,voltage comparator,and J-K flip-flop. A factor of 20to 50improvement in required computer time and storage was realized with the terminal models over detailed models,with no significant loss in the representation of key performance parameters or radiation environment vulnerability. Preliminary modeling results on the phase-locked loop nonlinear analog microcircuit are also presented. (Author)