Understanding an instrumentation amplifier (AD8221AR)

The sensor must be powered from E+, E- of the HX711.
Then there is no problem with common mode range.
Leo..

Sensor -----> HX711

VCC --------> E+
GND -------> E-
+out -------> A+
-out --------> A-

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Sensor -----> HX711

Forum software magled the makeup.

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Not according to the sensor datasheet

I always understood that these sensors have a differential output with a common mode voltage of VCC/2. But I can't find any mention of common voltage of the differential output pair in the datasheet.

OP should connect sensor VCC and GND to a 5volt source and measure the two outputs.
They should be about 2.5volt.
Leo..