Varying the temperature in a transient simulation

Best not to reply to a 2 year old thread...

Anyway, I have some slides on this, but I shouldn't post them to a public forum (they don't have screen shots anyway).

I can illustrate it with some spectre syntax examples, and then it's fairly obvious how to do this from the UI.

To vary temperature, specify the parameter name as "temp" and then you can enter your time-value pairs.

To vary more than one parameter, create an include file with syntax such as this:

pset1 paramset {
  time reltol temp p1 m1:l
  0n 1e-3 27 1 1u
  10n 1e-3 50 2 1u
  20n 1e-4 50 2 2u
  30n 1e-5 75 3 2u
}

Reference this file via Setup->Model Libraries.

Then on the GUI, go to the Options form on the transient analysis form, and at the bottom where it says additional parameters, enter
paramset=pset1

The above table will vary the reltol, temperature, a parameter called p1, and the length of transistor instance m1.

There is no direct GUI support for the param_step option (as outlined in "spectre -h tran"). If  you want that, you'll need to enter it via the Additional Parameters field on the transient Options form.

By the way, if you look further down in the "spectre -h tran" to the section "Dynamic Parameters during Transient Analysis), it gives an example of changing temperature during simulation. It doesn't just give an example using isnoisy.

Regards,

Andrew.

Best not to reply to a 2 year old thread...

Anyway, I have some slides on this, but I shouldn't post them to a public forum (they don't have screen shots anyway).

I can illustrate it with some spectre syntax examples, and then it's fairly obvious how to do this from the UI.

To vary temperature, specify the parameter name as "temp" and then you can enter your time-value pairs.

To vary more than one parameter, create an include file with syntax such as this:

pset1 paramset {
  time reltol temp p1 m1:l
  0n 1e-3 27 1 1u
  10n 1e-3 50 2 1u
  20n 1e-4 50 2 2u
  30n 1e-5 75 3 2u
}

Reference this file via Setup->Model Libraries.

Then on the GUI, go to the Options form on the transient analysis form, and at the bottom where it says additional parameters, enter
paramset=pset1

The above table will vary the reltol, temperature, a parameter called p1, and the length of transistor instance m1.

There is no direct GUI support for the param_step option (as outlined in "spectre -h tran"). If  you want that, you'll need to enter it via the Additional Parameters field on the transient Options form.

By the way, if you look further down in the "spectre -h tran" to the section "Dynamic Parameters during Transient Analysis), it gives an example of changing temperature during simulation. It doesn't just give an example using isnoisy.

Regards,

Andrew.