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I'm trying to incorporate a SPICE model of an NMOS IC, the ALD1106. I've used it before in class, but it's been so long that I've forgotten how to incorporate the files into LTspice in order to properly use it. Luckily, I found some SPICE models from ALD's website located below:

Link to SPICE models here

I've extracted the files, and I've included the following files in my schematic with the '.include' command: ALD_TECH.TEK, IC_TRAN.lib, and Ic_mod.lib. I've also opened up IC_TRAN and created a component model of the 1106 with the correct pins and everything, but I consistently get a warning that it can't find the definition of model "DPS". Can anyone please give me some advice on what to do next?

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  • \$\begingroup\$ Those are PSpice models, and while the library (.lib) can (or should) be usable in LTspice, the symbols have to be created, or used from the internal database. However, looking through the library, I don't think LTspice will recognize those ncg, pca, and dps, and may have to be edited manually. \$\endgroup\$ – a concerned citizen Sep 12 at 14:50
  • \$\begingroup\$ The linked 1106 model references two other models, ncg and dps. You must find those models, as well. Once you have them, you can combine them with the existing 1106 model to make a full subckt. Unfortunately, they require me to create an account and sign in to do more work. And I won't do that. But you need to find those models. They are probably pretty standard models. But they weren't included in the ZIP file I examined. (Or, at least, I didn't readily find them -- oh, well. Never mind. I just found them in a file called Ic_mod.lib.) \$\endgroup\$ – jonk Sep 13 at 6:54
  • \$\begingroup\$ You will also need to create your own symbol from LTspice. The model requires 5 pins, not four. (Because there is +V pin.) So you will have to fabricate your own symbol. (There is an included diode which ties to the 5th pin.) \$\endgroup\$ – jonk Sep 13 at 7:13

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