I am designing with a AD7173-8 and I want to use the internal reference.
I have decoupled the REFOUT pin with a 100n cap as described.
The data sheet does not say anything about the REF- and REF+ pins when using internal reference.
Should the REF- be connected to GND?
And should the REF+ be left floating?
In addition I intend to use the internal oscillator so I will leave XTAL1+XTAL2 floating. Hope this is ok also.
I attached my preliminary schematic for the AD7173-8.
Comments are appreciated.