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Also known as: Simulation Program with Integrated Circuit Emphasis
A general-purpose electronic circuit simulation program using device models and numerical analysis to predict circuit behavior.
DESCRIPTION
SPICE simulates electronic circuits by solving circuit equations derived from netlists and model parameters. It supports analyses such as DC operating point, AC small-signal, and transient time-domain behavior. Originating at UC Berkeley, SPICE underpins design validation for analog, mixed-signal, and power circuits. Open-source variants like ngspice and vendor versions such as HSPICE and Spectre extend features and device models. Engineers rely on SPICE to verify performance before fabrication and to explore design trade-offs efficiently.
ALTERNATIVE DEFINITIONS
Wikipedia
SPICE (Simulation Program with Integrated Circuit Emphasis) is a general-purpose, open-source analog electronic circuit simulator.
Emphasizes SPICE as the foundational open-source analog simulator.
ngspice
Ngspice is the open source spice simulator for electric and electronic circuits.
Positions ngspice as the modern open-source successor used widely.
Analog Devices
LTspice is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models to ease simulation.
Highlights performance enhancements and integrated models for practical use.
RELATED TERMS
ngspice LTspice Circuit Simulation Nodal Analysis Transient Analysis AC Analysis MOSFET Models Netlist Electrical Engineering Verilog-A
COMPETING TERMS
Spectre HSPICE
KNOWLEDGE AREAS
Infrastructure Platform & Tooling IoT & Edge Data Software Engineering
TARGET AUDIENCE
Hardware Engineer Software Developer Solution Architect Software Architect
EXTERNAL SOURCES
- Wikipedia - SPICE
- ngspice - ngspice documentation and manuals
- UC Berkeley - Historic SPICE resources
- Analog Devices - LTspice tool page
TOP QUESTIONS
Why is SPICE still relevant for hardware engineers?
It provides accurate pre-silicon validation, reduces design risks, and supports comprehensive analysis modes essential for analog and mixed-signal circuits.
Category: Relevancy
How does SPICE compare to Spectre or HSPICE?
They share core simulation concepts, but vendor tools add proprietary models and performance optimizations; SPICE remains widely accessible and extensible.
Category: Comparison
What are common mistakes when building SPICE netlists?
Incorrect device models, missing ground references, or unstable timestep settings often lead to convergence problems and misleading results.
Category: Mistakes
What analyses does SPICE commonly support?
DC operating point, AC small-signal, transient time-domain, noise, and parametric sweeps are typical capabilities.
Category: Overview
How do I start with SPICE for power electronics?
Use vendor model libraries, start with simplified topologies, and validate operating points before running detailed transient simulations.
Category: GettingStarted
What is the risk of misinterpreting SPICE results?
Unrealistic model parameters or simulation settings may mask stability issues or thermal limits, leading to costly hardware failures.
Category: Risks
Is SPICE suitable for RF design?
It can model small-signal and nonlinear behavior, but specialized RF tools may be needed for electromagnetic effects and layout coupling.
Category: UseCases
How is SPICE integrated into CAD workflows?
Most EDA tools provide SPICE backends, schematic capture, and model management to streamline from design to simulation.
Category: Management
What hot topic in SPICE is evolving now?
Improved device models for GaN/SiC power devices and co-simulation with digital logic are active areas.
Category: Topic