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how to set up min value for capacitor from analogLib

mbchang

I want to have a minimum value of the cap, but not sure how to set it up. I found below from the spectre manual but I wonder how can we do it from schematic. 

Polynomial capacitor parameters:
13 coeffs=[...] Vector of polynomial capacitance coefficients.
14 symmetric=none Use symmetric resistor model. Possible values are none and absolute.
15 min (F) Minimum capacitance.
16 max (F) Maximum capacitance.

Thanks,

Jerry

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  • Andrew Beckett

    Hi Jerry,

    These are only available as model parameters for capacitor, and not as instance parameters. So you'd have to specify this in a model file (e.g. models.scs) :

    model mycap capacitor min=XX max=YY coeffs=[...]

    and then refer to this in Setup->Model Libraries, and fill in the model name on the analogLib cap as being "mycap".

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Hi Jerry,

    These are only available as model parameters for capacitor, and not as instance parameters. So you'd have to specify this in a model file (e.g. models.scs) :

    model mycap capacitor min=XX max=YY coeffs=[...]

    and then refer to this in Setup->Model Libraries, and fill in the model name on the analogLib cap as being "mycap".

    Regards,

    Andrew.

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