SIMetrix:A mixed signal circuit simulator

Technorati Tags: SIMetrix,CAD,circuit simulator,xspice,SPICE,schematic editors,AC analysis

SIMetrix is a mixed-signal circuit simulator designed for ease and speed of use. It is based on two publicly available programs namely SPICE developed by the CAD/IC group at the department of Electrical Engineering and Computer Sciences, University of California at Berkeley and XSPICE developed by the Computer Science and Information Technology Laboratory, Georgia Tech Research Institute, Georgia Institute of Technology. XSPICE itself was developed from SPICE3C1.

Although originally derived from these programs SIMetrix includes front and back-end features that dramatically enhance their overall capability. Further, many improvements to the underlying simulation algorithms and device models have been made to the original code to increase accuracy and convergence reliability.

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snapshot of schematic editing window

transient analysis of the circuit shown in the previous fig.

AC analysis of the circuit

Features

• Closely coupled direct matrix analog and event driven digital simulator.

• Fully integrated hierarchical schematic editor, simulator and graphical post-processor.

• Superior convergence for both DC and transient analyses. "Pseudo transient analysis" algorithm solves difficult operating points while enhanced transient analysis algorithm virtually eliminates transient analysis failures.

• Advanced swept analyses for AC, DC, Noise and transfer function. 6 different modes available.

• Real time noise analysis allowing noise simulation of oscillators and sampled data systems.

• Support for BSIM3, BSIM4, MOS9, VBIC and Mextram devices. Compatible with HSPICE model files.

• Cross probing of voltage, current and device power from schematic. Current and power available for sub-circuits.

• Monte Carlo analysis including comprehensive tolerance specification features..

• Full featured scripting language allowing customised waveform analysis and automated simulation

• Incremental graphing of results as simulation proceeds.

• Functional modelling with arbitrary non-linear source and arbitrary linear s-domain transfer function.

• Arbitrary logic block for definition of any digital device using descriptive language. Supports synchronous, asynchronous and combinational logic as well as ROMS and RAMS.

• Models for saturable magnetic components including support for air-gaps.

• User definable fixed and popup menus and key definitions.

click here to download SIMetrix