A simulation program emphasized on DC analysis of VLSI circuits: SAMOC

This paper presents a simulation technique and a computer program for fast DC analysis of MOS transistor based VLSI circuits. Time domain analysis of a VLSI circuit is evaluated by a piecewise constant waveform approximation. This approximation is realized by repeatedly applying the developed DC analysis engine with initial conditions. All proposed methods such as device modeling, circuit partitioning and event-driven simulation were implemented and combined with such well known algorithms as modified nodal analysis (MNA), Katzenelson algorithm and Gaussian elimination in the form of a circuit simulation program: SAMOC. Time domain waveforms and benchmark circuit simulation results comparison of SPICE and SAMOC are presented.