I am using AD8220 to amplify the output voltage of a Wheatstone bridge (there is only an NTC Thermistor in the bridge).
I want to use the InAmp in single supply operation. The bridge is designed to always provide the positive input voltage to the InAmp
(Vin= (Vin+) - (Vin-) > 0 ).
The question is if it is necessary to connect the REF pin to Vsupply/2 in this case or it can be tied to GND.
Thanks for your help.