ckt files in the same manner as schematic symbols and PCB footprints. Simulation models are linked to vault-based components in Component Library files (. ckt files if using vault-based simulation components. These files include basic items you will need while doing simulations, including math functions, simulation voltage and current sources, transmission lines and PSPICE functions. op-amps).Īltium simulation files are located at C:\Users\Public\Documents\Altium\AD14\Library\Simulation (for Altium Designer 14, path may vary for other versions). MDL files (model files) are used for basic circuit simulation, and CKT files (subcircuit file) are for more advanced components that are built from many primary spice circuit elements (e.g. There are two types of file extensions that Altium accepts. The time it takes the signal to go from 0% to 100%. This should be equal to or less than the period. This should be equal or larger than the pulse width. Voltage/Current SourcesĪ pulsed voltage source has the following important parameters: Parameter Name This has been written for Altium Designer Summer 08, but steps should be similar if not identical for other versions of Altium also (it still seems applicable for AD14.3 in July 2014). Simulating circuits in Altium can be a little confusing, so I’ve written this little guide to help anybody attempting it! It uses an enhanced version of the event-driven XSPICE, and is fully compatible with SPICE3f5. For more detailed information about SPICE, including the various components and parameters it supports, see the SPICE Simulation page.Īltium has a built-in mixed-signal (analogue and digital) simulator. Note that this page is about the specifics of using Altium Designer for circuit simulation (which uses SPICE).
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