AD8226 is not working from 3.3V power supply

Hi,

I designed a load-cell circuit, using AD8226 as instrument amplifier. I connected its power supply to 3.3V. Vref is tied to GND.

It is not working until I change the supply voltage to 5V and above, although the spec specify it needs to work from 2.2V.

Any idea?

Thank you,

Eldad Chen

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