dear,the schematic diagram is as follows:the pin 1 and 4 of AMC1301 connect to the DC power,the voltage of 1 to ISOGND is 5v.the 8 and 5 connect to the other DC power,the voltage of 8 to DGND is 3.3V,but the output of AD8237 from the 8 pin have more noise when the AMC1301's voltage of pin 1 to ISOGND is more than 3.6v.
the 2 and 3 are differential signals from wheatstone bridge ,the The common mode voltage is 1.65v to the ISOGND ,the wheatstone bridge voltage is 3.3v to the ISOGND.
