Mixed–mode, analogue–digital simulation using SPICE–like circuit analysis programs
نویسنده
چکیده
An approach to integrated mixed-mode simulation is described in which the popular SPICE circuit simulator is extended to analyze digital circuits at the gate, functional or behavioral levels. The analogue-to-digital conversion is provided by (multilevel) parameterized “thresholders” which assign digital signals to subranges of voltages determined by a set of voltage thresholds. The digitalto-analogue conversion is implemented by voltage sources with “controlled” characteristics that convert discrete digital signals into continuous piecewise linear functions. The paper outlines internal organization of mixed, analogue– digital simulation, discusses modification of analyses and extensions to the input language needed for analogue–digital interactions, and highlights the specification of digital circuits. Simple examples of mixed, analogue–digital circuits and mixed–mode simulation illustrate this approach.
منابع مشابه
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