We know that the input coomon mode voltage should not be over the analog supply (~5V).
On the system, the differential lines could potentialy be short circuited to Ubat (12V) or sensor supply line (8V).
Against that, we will do a measure of the common mode voltage (with the ADC of the µC) at the start of the system and may be cyclically too.
We also want to add a protection on the signal line: 2 diodes
Is it correct to do like that? I mean related to noise problem?
The ADC we want to protect will probably be a AD7195 (according to the advice from AD)
Do you have better solution?