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LTspice

analog.com

Free plan WindowsmacOSLinux
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Spec score 7.6 #22 of 41 in Electrical Design Software

What it is

LTspice is a SPICE simulator, schematic capture tool and waveform viewer for analog circuit simulation. Its graphical schematic interface lets users probe a design, run simulations and inspect results in the built-in viewer. The download includes macromodels for most Analog Devices switching regulators and amplifiers, as well as a device library for general circuit simulation. Users can import third-party SPICE models implemented with .MODEL directives or .SUBCKT blocks. Designs from Signal Chain Designer, Analog Filter Wizard, Analog Photodiode Wizard, Precision ADC Driver Tool and LTpowerCAD can be exported to LTspice for simulation or verification. Tutorials address schematic creation, transient and AC simulation, waveform viewing, transformers, third-party models and noise analysis. The EngineerZone forum is available for questions and discussion. Analog Devices presents LTspice as an engineering design tool, with demo circuits and model libraries for designers. It is listed for Linux, macOS and Windows; the free plan specifies Windows and macOS downloads. A verified forum answer from an Analog Devices employee says telemetry is sent only if users opt in, and that the setting can be changed.

Spec sheet

Purpose
LTspice is a SPICE simulator, schematic capture tool, and waveform viewer for analog circuit simulation.Read 5 Oct 2026 · analog.com
Platforms
The download page lists Windows 10/11 x64, Windows 11 ARM64, and macOS; Windows XP and older macOS downloads are marked end of support.Read 5 Oct 2026 · analog.com
Support
Users can ask questions, answer them, or comment about LTspice in the EngineerZone forum.Read 5 Oct 2026 · analog.com
Headquarters
Wilmington, Massachusetts, USARead 28 Sep 2026 · analog.com
Founded
1965Read 28 Sep 2026 · analog.com
Design tool exports
Signal Chain Designer, Analog Filter Wizard, Analog Photodiode Wizard, Precision ADC Driver Tool, and LTpowerCAD can export designs to LTspice for further simulation or verification.Read 5 Oct 2026 · analog.com
Features
The maker describes LTspice as fast, free, and unlimited, with enhancements and models for analog circuit simulation.Read 5 Oct 2026 · analog.com
Intended audience
The maker presents LTspice as an engineering design tool and provides circuit simulation tutorials, demo circuits, and model libraries for designers.Read 5 Oct 2026 · analog.com
Learning resources
Analog Devices provides tutorials on schematic creation, transient and AC simulation, waveform viewing, transformers, third-party models, and noise analysis.Read 5 Oct 2026 · analog.com
Model library
The LTspice download includes macromodels for most Analog Devices switching regulators and amplifiers, plus a library of devices for general circuit simulation.Read 5 Oct 2026 · analog.com
Simulation
Its graphical schematic interface lets users probe schematics, run simulations, and explore results in the built-in waveform viewer.Read 5 Oct 2026 · analog.com
Telemetry
An Analog Devices employee states in a verified forum answer that LTspice sends no data unless users opt in, in which case it sends anonymous telemetry to ADI; the choice can be changed in settings.Read 5 Oct 2026 · ez.analog.com
Third-party models
LTspice supports importing third-party SPICE models implemented with .MODEL directives or .SUBCKT blocks.Read 5 Oct 2026 · analog.com

Plans and prices

LTspice Free Free · unlimited · Windows and macOS downloads listed Read 5 Oct 2026 · analog.com

Every LTspice plan and price →

Strong points and limits

Strong points

  • Free and described as unlimited
  • Includes models for many Analog Devices components
  • Imports third-party SPICE models
  • Several Analog Devices tools export designs to it

Limits

  • Listed free-plan downloads specify Windows and macOS
  • Telemetry is sent if users opt in

Who it suits

LTspice suits designers working on analog circuits who need schematic capture, simulation and waveform inspection. Tutorials, demo circuits and model libraries are available for learning and design work.

Verdict

LTspice combines schematic capture, analog simulation and waveform viewing with included and importable models. Check the platform details for the free plan and choose whether to enable telemetry.

Where Specifiction places it

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