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MOSFET Mixed-Signal Multi-Level Circuit Simulation: An Implicit Mixed-Mode SolutionAbstract
A single-engine mixed-mode multi-level circuit simulator, XSIM, is introduced. The unique dynamic circuit partitioning and mode switching are based on the subcircuit expansion approach, in which digital gates have a dual-representation at the logic and circuit levels. A dynamic-delay model is described for gate-level timing simulation, which includes the effects of nonlinear capacitive loading, input transition time, and multiple-input triggering, and demonstrates near circuit-level accuracy with gate-level speed. A block-level representation for analog circuit acceleration is proposed. The proposed methodology will prove to be very useful for mixed-signal circuit design in the deep-submicron technology era.
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