ADAPTS: A Comprehensive Circuit/Timing Simulation Strategy for Integrated Circuits

ADAPTS：集成电路的综合电路/时序仿真策略

• 批准号: 9014402
• 负责人: Ronald Rohrer
• 金额: $ 26.6万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-15 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9014402&HistoricalAwards=false
• 关键词: ADAPTS; Comprehensive; Circuit; Timing; Simulation

Rohrer A piecewise linear circuit timing simulator that is robust and efficient in the approximate transient analysis of lumped circuits is being developed. To better simulate the highly nonlinear bipolar and biMOS circuits, a simulation strategy to work with piecewise linear rather than piecewise constant table approximations of nonlinear device characteristics is being explored. Inductance is being included on an equal basis with capacitance. The steady state solution computation is being made more efficient by solving for its conditions explicitly, prior to seeking the transient response that may attain it. Thus, circuit simulation is to be invoked only to obtain successive steady state conditions, but not for intermediate transient time points. To maintain transient simulation computational efficiency, explicit integration strategies that allow the exploitation of both temporal and spatial latency are being used. To insure the stability of explicit integration approximations, the computed steady state conditions are being employed to limit step size. This is intended to overcome the stiff systems problem. The above strategies are being embodied in the SPECS (Simulation Program for Electronic Circuits and Systems) software.

Rohrer 一个分段线性电路时序模拟器，是强大的和有效的近似瞬态分析集总电路正在开发中。 为了更好地模拟高度非线性双极和biMOS电路，正在探索一种模拟策略，以分段线性，而不是分段常数表近似的非线性器件特性。 电感与电容在同等基础上计算。 在寻求可能获得稳态解的瞬态响应之前，通过明确求解稳态解的条件，使稳态解的计算更加有效。因此，仅在获得连续稳态条件时才调用电路仿真，而在中间瞬态时间点则不调用电路仿真。 为了保持瞬态模拟计算效率，正在使用允许利用时间和空间延迟的显式集成策略。 为了确保显式积分近似的稳定性，计算的稳态条件被用来限制步长。 这是为了克服刚性系统的问题。 上述策略被具体化在SPECS（电子电路和系统仿真程序）软件中。