Ngspice
Ngspice is an open-source circuit simulator for electronics and semiconductors. It allows analyzing, modeling, and testing analog, digital and mixed-signal circuits with over 500 spice models of MOSFETs, BJTs, diodes, transformers, etc.
electronics
semiconductors
circuit-simulation
spice-models
analog-circuits
digital-circuits
mixedsignal-circuits
Ngspice: Open-Source Circuit Simulator for Electronics & Semiconductors
Ngspice is an open-source circuit simulator for electronics and semiconductors. It allows analyzing, modeling, and testing analog, digital and mixed-signal circuits with over 500 spice models of MOSFETs, BJTs, diodes, transformers, etc.
What is Ngspice?
Ngspice is an open-source circuit simulator for electronics and semiconductors. It is used for the simulation and analysis of analog, digital and mixed-signal circuits at the transistor and gate level. Ngspice is a successor to the popular Spice3 simulator and aims to improve upon it in several areas.
Some key features of Ngspice include:
- Simulation of over 500 spice models for transistors, diodes, transformers, transmission lines, and other components
- Analysis of analog, digital, and mixed signal circuits
- Advanced analyses modes like DC, AC, transient, Fourier, noise, etc.
- Scriptable via a command line interface or batch files
- Model parameter sweeping and optimization
- Import/export of netlists and raw data
- Integrated plotting and waveform viewer
- Free and open-source under GPL license
Ngspice is commonly used in circuit design, semiconductor device modeling, analog filter design, power electronics, and RF/wireless systems. Its open-source nature allows developers to easily extend and customize it as per their needs. Ngspice can help verify circuit performance before prototyping, reducing development costs.
Ngspice Features
Features
- SPICE circuit simulator
- Supports digital, analog and mixed-mode circuits
- Has an extensive model library
- Supports PSpice compatible models
- Has a graphical waveform viewer
- Can generate netlists from schematics
- Has Monte Carlo and worst-case analysis
- Can do DC, AC, Transient and Fourier analysis
Pricing
- Open Source
Pros
Free and open source
Powerful simulation capabilities
Large model library
Compatible with many SPICE models
Good for learning circuit simulation
Cons
Steep learning curve
Limited documentation and support
No integrated schematic editor
User interface is not very intuitive
Official Links
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