I'm choosing a digital potentiometer. There are two candidates now, one is AD5270, another is AD5293. In AD5293's data sheet it clearly state it's "Voltage divider temperature coefficient" is 5 ppm/°C. But this parameter is absent in AD5270's data sheet. So what value we can expect for it's voltage divider temperature coefficient?
The AD5293 is a digipot (digital potentiometer) which uses three terminals (A, B, W) while the AD5270 is a rheostat which uses only two terminals (A and W).
The terminology used by the rheostat that is equivalent to the digipot's "voltage divider temperature coefficient" is called the "rheostat mode temperature coefficient" or just the "resistance temperature coefficient". For the AD5270 that would be the 5 ppm/degC.
Thanks, so AD5270 is not function equivalent to AD5239. I missed it.