Re: temperature sensor spice simulation
I think you might need to move to a veriloga model of your
sense element (and any critical fellow travelers) that makes
temperature a dynamic (e.g. an input voltage port) rather
than static variable. This goes all the way to the bottom of
the compact model equations and even the more temperature
aware simulators (DTEMP param on models allowing temp offset
per device, for example) seem to be stuck at t=0.
There do exist veriloga versions of some device SPICE models.
Not always easy to find, or the one you particularly want
existing, necessarily. And you have the task of fitting such
a specialty model to your device's behavior.