Ngspice

制造商：NGspice team
Ngspice is a mixed-level/mixed-signal circuit simulator. Its code is based on three open source software packages: Spice3f5, Cider1b1 and Xspice. It is the open source successor of these venerable packages. Many, many modifications, bug fixes and improvements have been added to the code, yielding a stable and reliable simulator. Therefore, besides being used as a standalone simulator, Ngspice has been incorporated into many projects, see our simulation environments page.
Spice3 does not need any introduction, is the most popular circuit simulator. In over 30 years of its life Spice3 has become a de-facto standard for simulating circuits.
Cider couples Spice3f5 circuit level simulator to DSIM device simulator to provide greater simulation accuracy of critical devices. DSIM devices are described in terms of their structures and materials.
Xspice is an extension to Ngspice that provides code modeling support and simulation of digital components through an embedded event driven algorithm.

ngspice – open source spice simulator

ngspice is the open source spice simulator for electric and electronic circuits.

Such a circuit may comprise of JFETs, bipolar and MOS transistors, passive elements like R, L, or C, diodes, transmission lines and other devices, all interconnected in a netlist. Digital circuits are simulated as well, event driven and fast, from single gates to complex circuits. And you may enter the combination of both analog and digital as a mixed-signal circuit.

ngspice offers a wealth of device models for active, passive, analog, and digital elements. Model parameters are provided by our collections, by the semiconductor device manufacturers, or from semiconductor foundries. The user adds her circuits as a netlist, and the output is one or more graphs of currents, voltages and other electrical quantities or is saved in a data file.

ngspice does not provide schematic entry. Its input is command line or file based. There are however third party interfaces available.

ngspice is SPICE compatible. You may apply PSPICE or LTSPICE device model parameters and netlists for simulating discrete circuits. ngspice will also read HSPICE device libraries from semiconductor foundry PDKs for simulating integrated circuits.

ngspice builds on many operating systems. The source code and binaries for MS Windows and macOS are available for download on our sourceforge download page. All popular Linux distributions, Cygwin or FreeBSD offer ngspice as well. The F.A.Q. and documentation pages provide a lot of information, a detailed manual is available. Mailing lists, discussion forums and a bug tracker are offered.