in your Application Note "A Basic Guide to RTD Measurements" in section 2.7.1, a circuit is shown for 2 RTDs needing a 5 channel ADC.
As AIN2 and AIN3 are shorted together at the RTD inputs, would it be possible to modify the circuit to combine them using just 1 AIN?
=> RTD1 is measured between AIN1 and AIN2 and RTD2 is between AIN2 and AIN3.
Here is a picture (before and after the circuit modification):
We want to measure slow signals from 2 PT1000s (max. 1°C/s), would this modified circuit work?
Or can you provide documents, etc. why it would not work.
Thank you very much in advance!