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AD8220 Ref. Voltage

Question asked by are.1980 on May 16, 2014
Latest reply on Jun 3, 2014 by are.1980

Hi,

 

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.

 

 

 


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