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Create a symbol from layout

Sinochka

I have created a symbol by momentum for a transformer in 65nm technology

but when i use mentioned symbol in a schematic and try to run LVS, but i have gotten error consider that the symbol could not read.

could anybody guide me?

  • in reply to Andrew Beckett

    The ansCdlCompParamPrim for netlistProcedure and change the model name to device name were useful for creating netlist from schematic and now the subcircuit is in schematic.

    Due to checking LVS when the Calibre want to compare layout vs Schematic it compares Netlist source ( the .cdl file which has been created by schematic) vs Layout source from GDSII file (which has been  created as .sp file)

    The current problem is that the .sp file does not include the intended device.

    The .sp file's text is as follow:

    * SPICE NETLIST
    ***************************************
    .SUBCKT TB_LVS pS_NEG pS_POS pPOS pNEG
    ** N=4139 EP=4 IP=0 FDC=1

    X0 pS_NEG pS_POS pS_NEG crtmom_rf w=1.60761e-07 s=1.59913e-07 nv=289 nh=289 stm=3 spm=5 $X=137250 $Y=-152160 $D=251

    .ENDS
    ***************************************

    Could you please guide me about the mentioned matter?

    I will appreciate if you could inform me about how the .sp file is created from GDSII?

    Is there any tool setting for Layout like CDL export to could recognize the subcircuit to the translator in layout?

    Sincerely

  • in reply to Sinochka

    I am assuming that this .sp file is created by Calibre LVS? If so, then you would be best asking this to Mentor, since Calibre is their tool (it's not a Cadence tool). I imagine that it's not recognising the device in the layout during the extraction part of the LVS and just sees it as routing - I mentioned this as being a likely thing you'd have to deal with in an earlier reply.

    Other than the generation of the CDL netlist, this is mostly an issue for Calibre, so this is not the best place to ask such a question.

    Andrew.

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