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Importing a Design from LTspice into Altium Designer

Created: августа 01, 2022 | Updated: августа 01, 2022 | Applies to versions: 22, 23, 24 and 25
Вы просматриваете версию 22.0. Для самой новой информации, перейдите на страницу Importing a Design from LTspice into Altium Designer для версии 25

Simulation designs saved from LTspice® are able to be imported into Altium Designer with the LTSpice Import Wizard.

The LTspice file import capabilities are available through the LTSpice Importer software extension – show image.

Learn more about Extending Your Installation.

Invoke the wizard with the File » Import Wizard menu command, select LTSpice Design Files as the file type option, and then complete the subsequent wizard steps.

Select LTSpice Design Files in the Import Wizard to import LTspice files.
Select LTSpice Design Files in the Import Wizard to import LTspice files.

Component symbol files referenced by the LTspice design file (*.asc) are automatically added as library files, and in turn, the simulation models referenced within the component library files are also added to the import.

The import process results in an Altium Designer PCB project that also includes a Schematic Library containing the design's components and a set of generated simulation models in the general *.mdl format. LTspice Voltage Sources are imported as an equivalent Altium Designer Simulation Stimulus type.

Library and Model files

  • The successful import of an LTspice design relies on the availability of the design's component library data files, such as the supporting component symbol files (*.asy) and simulation model files (*.sub or *.lib, etc). All the required files should exist in the same source folder as the LTspice design file (*.asc) that is being imported.
  • Contrary to the above, if the LTspice application has been installed on the PC that hosts Altium Designer, then the library files will automatically be detected in the LTSpice installation and added to the import process.
  • Note that the Import Wizard also supports importing LTspice component library files (*.asy) only, without the need for a corresponding design file (*.asc).
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