AD8221 Problem


I am using an AD8221 to amplify a wheatstone bridge.  I believe I have the circuit configured correctly (nothing fancy), I even added a couple of resistors between -IN and +IN to Ground.

For some reason my output reads 635 mV when it should be zero (there is no load on the beam).  I am supplying 10V as source voltage to the amp.

Any thoughts?


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