I'm engineering a system that is temperature-sensitive, between ~-10-30C. I've moved to using cermet potentiometers because of their sub-200PPM/C temperature coefficients.
If I wire such a pot with the extremities at gnd and Vcc assumed to be temperature-invariant, and take the wiper as a Vref, then can I assume that the "lower" and "upper" parts of the pot on either side of the wiper have equal temperature variance and so Vref's temperature variance will be nearly zero?