My customer is making prototypes using multiple AD7124-8 chips. The problem is, reading some chip's ID reg returns 0x13, contradiction of 0x12 from the datasheet, while some chips read 0x12 in the ID reg.
Except this, both 0x13 and 0x12 chips work well.
We checked the SPI timing through oscilloscope, no problem could be found, i.e. DOUT of certain chips do give 0x13.
Could someone advise?