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FinFET model parameter

Saeed Gharagoz
I have a FinFET model parameter and I need to use to simulate a circuit. How can I do it? Should I only change the file extension from .pm to .scs and copy it where everything else is? Or should modify the existing file? And any idea where can I get 22nm MIGFET model? Thanks
  • Actually, you only have to use the nmos4 and pmos4 instance in schenmatic tool and define the same name in the model card, then when you want to specific the device model in ADE with the correspionding model card of your FinFET transistors for n-MOS and p-MOS.
  • Hello, I want to simulate finfet models from PTM ASU, I know how to use it in Hspice. But I want to simulate finfets with Cadence Spectre.
    Please suggest me how can i go with Cadence Spectre.

    Thank you
    Reetu raj pandey
    pandey@lirmm.fr

  • You can just include the models as-is into spectre - it will understand that level 72 in SPICE syntax corresponds to the built-in bsimcmg device. If you're running from the netlist level, you just need to have instances of the nfet and pfet models from the PTM models and pass the right parameters for bsimcmg (if you type "spectre -h bsimcmg" it will be clear what the instance parameters are).

    If you want to make it work from ADE, you'd need to create a component which will netlist the correct parameters for a bsimcmg - which would mostly be about constructing the CDF properly. However, this would be the same challenge if you were running HSPICE from ADE too. Not clear how you are expecting to run the simulations.

    Not sure if your University is part of the Europractice scheme - if so, you may be able to get some support from them too.

    Regards,

    Andrew.

  • Thank you very much

    Yes I want to use ADE to run the simulations for FinFET model in the PTM ASU, as writing netlist would be complex.
    I can create the component from the library I already had , but it is required to edit the CDF.
    I can edit the CDF as well.
    But I think i need to include the model files from PTM ASU, so as our FET can read the property of FIN-FET ???
    Can you please guide me how to do this ??

    I am very new in cadence, so if you can guide me step wise for this it would be very helpful to me.
    Thank you
  • in reply to Andrew Beckett

    Dear Mr. Beckett,

    I want to use ptm model parameters for 45nm but Pspice A/D Lite version 17.2 gives me the error "ERROR(ORPSIM-16313): Circuit contains encrypted device models. You need the licensed copy of software to simulate encrypted models". In which tool and version can I use ptm model parameters for free?

  • in reply to keless

    This thread is talking about spectre, not PSPICE. That is a completely different simulator with focus on PCB Design. Typically you won't find answers about PSPICE here, so I suggest you post your question in the PCB Design forum instead. I have little knowledge of PSPICE (certainly not about trying to run it with these "ptm" models you refer to).

    Andrew.

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