How To Import Orcad Component Libraries into Multisim

[dorsiares]

Ive been using LabView for a long time now, and I have just started using Multisim and Ultiboard.   A lot of companies all ready have orcad libraries for their components, such as Maxim and Microchip.  Is there anyway to import these into Multisim or do I have to recreate everything? 

Specifically, I am trying to import these libraries.  It would also be nice to import others too.

http://www.maxim-ic.com/tools/spice/operational_amplifiers/orcad/

Thanks In Advance

[lacy]

Multisim does not use library files the way other packages do.You should still be able to use these files to create a new component with the component wizard tool. I am not sure how other packaqges work when it comes to importing spice models, but with Multisim it is a manual process of creating an individual part with a symbol and footprint. This is no guarantee that these models will work inside Multisim. You just have to try them and see.

There are tutorials available in the user's manual on component creation. Also, follow the link in my signature and there you will find a link to other tutorials in the Knowledge Base.

I hope this helps some.

Message Edited by lacy on 07-23-2008 06:05 PM

[kittmaster]

The only approach known to work (using version 7.2 and 10.3 of Orcad) is to place the components into an Orcad .dsn file save the file......open MS, File>Open>your.dsn file.....

From there the autoimport wizard brings it in. From there, you can then add the components to the database......just use caution the symbol and footprints remain aligned and constant, TYPICALLY, it a seamless process.

Chris

Message Edited by kittmaster on 07-23-2008 09:25 PM

[lacy]

Good tip, Chris. I think I misunderstood his question. I thought he was trying to inport the models directly from the site in the link. I know this isn't possible without doing your technique which means he would have to have Orcad as well as Multisim.

I really think NI needs to look at other packages to see how they handle their models and use something like that in Multisim. It would make adding models/components a whole heck of a lot easier in my opinion.

[kittmaster]

agreeded......

[dorsiares]

Thanks for the advice.

I ran through the component wizard, but now I am stuck when it asks to type in all the spice model information.  What do I put in here?  I would like to be able to build the PCB and simulate the component in Multisim.   Most every manufacturer has a downloadable orcad model, but no multisim model.  Help!

I am trying to make a MAX4487 chip.

Thanks

[kittmaster]

When you started the creation did you select layout only? Or the top option?

I believe you put the model in after the part is created. Its been a while. once the part is done, there should be a button for "edit model" where you can put the begins and ends with the spice code.

[lacy]

When you get to the point where it asks for a spice model open the .LIB file in Notepad and cut and paste the model you want into the window that Multisim provides for the model. These models are deliniated by a .SUBCKT command at the beginning of the model and an .ENDS statement at the end. it would looksomething like this:

.SUBCKT LM380N 1 2 3 4 5 6 7 8

-Model information here-

.ENDS LM380N

I hope this helps some. Go to to link in my signature and at that site goto the Knowledge Base and there are some good links to tutorials that can be of great assistance when creating components.