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Parametric sweep in spectre (Read 3247 times)

smarty

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Posts: 46

Parametric sweep in spectre
Sep 05^th, 2008, 4:28am

Hi All,
�Can anyone help me out on the following issue.

I am using a PWL whose pulse width is modelled depending on temperature. So if temperature increases the the high perion of the pulse increase.
I used a variable temp to define it. and if I do a parametric sweep of temp for 2 steps say 25 and 75. I see the block output not performing as desired.

If I run for the two steps seperately in analog artise, it works. Also when I change the variable from temp to any other name the block works as desired.

But I need to model using temp and can anyone suggesthow can I do that.

Thanks and Regards,
SBR

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sheldon

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Posts: 751

Re: Parametric sweep in spectre
Reply #1 - Oct 3^rd, 2008, 10:58am

Smarty,

� Can you implement the PWL in VerilogA? VerilogA can
access the simulation temperature and you can write your
equation for the pulse width using that value. Or, I think the
there is a keyword for temperature, temp(?) so you can write
expressions with temperature dependency for the PWL. If you
look in the variable list for parametric analysis, the temperature
keyword is listed.

� � � � � � � � � � � � � � � � � � � � � � � � � � � � Best Regards,

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � �Sheldon
� � � � � � � � � � � �

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smarty Community Member Offline Posts: 46	Re: Parametric sweep in spectre Reply #2 - Oct 4^th, 2008, 12:22pm Hi Sheldon, Thanks for your inputs. I was able to successfully implement the same using the temp variable. I assigned the input as a variable temp and swept the temp for different values and I was getting the desired results. Best Regards, SBR
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