I have a question from our customer about AD7688 ENOB performance.
In the datasheet page-4, the vref input voltage range is described as 0.5V to VDD+0.3V.
Our customer is going to use 1.0V for vref voltage.
And they needs 14bit ENOB in this condition.
Do you know the ENOB when the vref voltage is 1.0V ?
If you have an ENOB graph, which the vref is extended to 1.0V, please send it to me.
Figure 13 of the AD7688 shows a graph of ENOB vs reference voltage from 2.3V to 5.5V. I will have to check if we have this for a reference of 1V as this is not a value we usually work with.