AMC1200: can provide +- 1.5V power supply for low side?

Hi Yuan,

This may be possible but we cannot guarantee the device behavior when operated in this way since it has not been fully tested. I spoke with a member of the design team and there are some concerns, especially with the common-mode output voltage. If you look at the device datasheet, you will see that the common-mode output voltage is typically 1.29V, but has a minimum of 1.15V and maximum of 1.45V. Any variation in common-mode output voltage would result in a direct offset error if sensing in a single-ended manner.

To summarize, operating the device from unipolar supplies is best and using an operational amplifier for level shifting and differential to single-ended conversions is best. 

Please let me know if you have additional questions.