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Problem with terminals definition in a spice component

nasetrop

Hi, I have to integrate in spectre  discrete models of transistor. I followed this guide (https://community.cadence.com/cadence_blogs_8/b/rf/posts/tip-of-the-week-how-to-simulate-a-subcircuit-netlist-with-spectre-in-ade) as indicated in many community post. I create a symbol view and a spectre view and I setup the CDF for this new cellview. The problem arrives when I try to create a netlist  the instance associated with this model includes 0 terminal, while in the CDF I indicate 6 terminals. So the simulations fail. I try to search for an advice on the community but I didn't solve the problem.

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  • Andrew Beckett

    Please show a screenshot of the symbol of the IBMG120R030M1H_L3 component and also the Tools->CDF->Edit form for the component with the Simulation Information tab displayed, and the simulator set to "Spectre" (it should be the "Base" CDF too that you show).

    We need to see what you've done to diagnose what's wrong.

    Thanks,

    Andrew

  • nasetrop
    in reply to Andrew Beckett

    Thanks Andrew for the support. 

    Here there are the screenshots:

  • Andrew Beckett
    in reply to nasetrop

    There are (at least) three things wrong here:

    1. The terminal names in the termOrder need to be the terminal names on symbol in the order they appear in the external subckt model. You have the termOrder names in uppercase, whereas they are called Drain, Gate, Source, Sense on your symbol
    2. There are only 4 terminals on the symbol, whereas I think you have 6 terminals on the subckt - presumably you'll need pins for these otherwise they won't be connected (and Spectre will error out because of that)
    3. The termMapping looks very odd - it's got spaces in it. The idea of termMapping is to allow mapping of a terminal to (usually) the pin number for the purposes of saving and plotting currents through that pin. It can be used with the terminal name, but unless saving of terminal names has been enabled this might work for saving but not for plotting. Anyway, that's a secondary issue.

    Regards,

    Andrew 

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