Take a simple voltage divider composed of R1 and R2:
Vout = V(R2/(R1 + R2))
How much would the output vary with temperature if each resistor was spec'd at +/- 100ppm/degree? In other words, how well would the resistors track if both were of the same type such as metal film, 1/10 watt chip resistors? (Assume no temperature difference between the two resistors.)
Anyone know of any app notes, tech notes, or articles that discuss this?