temperature sweep in Spectre

Discussion in 'Cadence' started by mgrossman, Jul 31, 2007.

  1. mgrossman

    mgrossman Guest

    Hi
    Running MMSIM61

    I have a diode model with 'rs' defined by a cubic temperature function
    (i.e. const+lin*temp+quad*temp^2 *cub*temp^3)

    When I sweep the temperature in a simulation it works O.K.

    When I try to run dc sweep simulation at a selected temperature I get
    an error saying that 'rs' is less than or equal to zero.

    It turns out that with the coefficients I'm using in my function the
    value of rs does indeed go negative above a certain temperature.

    Why does spectre not bother about this when the temperature is sweep
    but the at spot temperatures spectre won't run

    Cheers
    Martin
     
    mgrossman, Jul 31, 2007
    #1
  2. mgrossman

    Andrew Beckett Guest

    I see this one has been logged as a service request, and is being worked out
    with R&D, so I won't comment on it here.

    Regards,

    Andrew.
     
    Andrew Beckett, Sep 16, 2007
    #2
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