I have a question from a customer about timing parameter of AD7688.
The VIO range is described as 1.8V to Vdd+0.3 in page4 of the datasheet.
But "specified performnace" range is 2.3V to Vdd+0.3V.
Our customer wants to know the I/O timing at 1.8V VIO.
Do you have any timing data which can be used as reference ?