Hi,

I am trying to plot the reverse sat current of bjt versus temperature in spectre ade setup of cadence.

'is' is a model parameter for this model bipolar.


doing a dctemp sweep/parametric  shows 'is' is constant with temperature (clearly its not so from theory)

any ideas what is missing here?

Thanks,
yvkrishna

boe -
I think the temperature update of the model parameters *must* be done for every sweep point, but the simulator may or may not make this available for plotting by the user.  The simulator may just give back the raw value that it was given (which might involve some complicated equations of subckt parameters, so it's not necessarily a trivial replay of a single number).

-Geoffrey

Thanks for your views. I shouldn't go by the name 'is'  as its a model parameter.

Is there any other way to plot rev saturation current in a bjt .


Regards,
yvkrishna

boe,

Yes I did try with parametric analysis.
Itseems that Model parameter is not at all swept in Spectre simulations.

Thanks,
yvkrishna