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LTspice
Wilmington, Massachusetts, USA
What it is
LTspice is a SPICE simulator, schematic capture tool, and waveform viewer for analog circuit simulation. Its graphical interface lets users probe schematics, run simulations, and inspect results in the built-in viewer. The download includes macromodels for most Analog Devices switching regulators and amplifiers, alongside 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 further simulation or verification. Tutorials cover schematic creation, transient and AC simulation, waveform viewing, transformers, third-party models, and noise analysis. Users can ask questions or discuss the tool in the EngineerZone forum. Analog Devices presents LTspice as an engineering design tool and provides demo circuits and model libraries. It is described as free and unlimited. Its listed free plan specifies Windows and macOS downloads, while platforms are listed as Linux, macOS, and Windows. A 90-day trial is noted; an Analog Devices employee says telemetry is sent only if users opt in, and that setting can be changed.
For and against
For
- Includes models for many Analog Devices regulators and amplifiers.
- Imports third-party .MODEL and .SUBCKT models.
- Several design tools export designs to LTspice.
- Tutorials cover simulation and waveform analysis.
- Free plan is listed as unlimited.
Against
- The listed free plan specifies Windows and macOS downloads.
- Telemetry is sent if users opt in.
- Pricing note lists a 90-day trial.
The verdict
LTspice brings schematic capture, simulation, and waveform viewing into one tool, with a library of models and learning resources. Confirm platform availability for the intended setup, since the free-plan listing names Windows and macOS downloads.
Who it suits
LTspice is aimed at engineers and circuit designers who need to create schematics and simulate analog circuits. Its tutorials, model library, and design-tool exports may also help users learning or verifying circuit designs.
Plans and prices
LTspice
Free · unlimited · Windows and macOS downloads listed
Read 5 Oct 2026 · analog.com
On the record
- 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.analog.com · read 5 Oct 2026
- Features
- The maker describes LTspice as fast, free, and unlimited, with enhancements and models for analog circuit simulation.analog.com · read 5 Oct 2026
- Intended audience
- The maker presents LTspice as an engineering design tool and provides circuit simulation tutorials, demo circuits, and model libraries for designers.analog.com · read 5 Oct 2026
- Learning resources
- Analog Devices provides tutorials on schematic creation, transient and AC simulation, waveform viewing, transformers, third-party models, and noise analysis.analog.com · read 5 Oct 2026
- Model library
- The LTspice download includes macromodels for most Analog Devices switching regulators and amplifiers, plus a library of devices for general circuit simulation.analog.com · read 5 Oct 2026
- Purpose
- LTspice is a SPICE simulator, schematic capture tool, and waveform viewer for analog circuit simulation.analog.com · read 5 Oct 2026
- Simulation
- Its graphical schematic interface lets users probe schematics, run simulations, and explore results in the built-in waveform viewer.analog.com · read 5 Oct 2026
- Support
- Users can ask questions, answer them, or comment about LTspice in the EngineerZone forum.analog.com · read 5 Oct 2026
- 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.ez.analog.com · read 5 Oct 2026
- Third-party models
- LTspice supports importing third-party SPICE models implemented with .MODEL directives or .SUBCKT blocks.analog.com · read 5 Oct 2026