ADS8588S: ADS8558 can't work well, there are many noises on the output of ADS8588, but ADS7606 can work normally.

Dears:

product: FTU(grid automation)

analog signal:50/60Hz from 10kV power line;

channel: 8, including 3 phase voltage,3 phase current;

customer used AD7606 in the design before, now they want to use ADS8588 to replace AD7606, during the test process, we found that there are many interferences on the output of ADS8588, but on the same test conditions, AD7606 works well, I hope you can help us analyze this problem， thanks