Hello, we are working on a new prototype and have had trouble communicating with the chip. We have tried a few different ones and have tried troubleshooting the design to find the problem.
We are seeing an abnormal output on reg25. Right now it is running at ~3.1V and it drops down to the 2.5V level when VEN toggles the transistors to enable voltage readings. In addition there is some noise at ~0.5V above ground on SRN.
Our design is based on the multicell typical application in the datasheet with some modifications. I can post it here if it would help.
Regards,
Alex