I am interesting to use TL431 voltage reference to generate 5V to be used in Vref input of AD7683.
This voltage reference has low noise voltage enough for AD7683?
I am asking because many voltage reference devices inform noise voltage parameter, normally in a specific range of frequency and in micro volts.
For example, ADR435 device, from Analog: Low noise (0.1 Hz to 10.0 Hz): 3.5 µV p-p @ 2.5 V output.
Unfortunatelly, this information does not informed in the TL431 datasheet. I tried TI, OnSemi, etc...