DigiPOT voltage levels (when used as voltage dividers)

Question

Is the AD5272 (or any other digiPOT) suitable for thermocouple voltage levels? I'm looking to use this to divide my thermocouple simulated voltage to about 0.940mV and as high as 3.9mV

musach · Accepted Answer

In this case, the main contributor is the zero scale error + tempco. 
 The value that you are looking for is quite small.... 
 You have two options, but the cheapest is probably current output DAC.... AD5451 should fit in your application. 
 Just remember that the output opamp should have a Vos lower than your minimum accuracy. 
 Let me know if something is not clear, please. 
 regards, 
 Miguel