I have a question about AD717x.
When AD717x works with the internal REF and REFBUF are enable, Does C is required on REF+ and REF-?
Typical connection on AD7175 DS (Fig 44) has 4.7uF, 0.1uF and another 0.1uF (Cdiff) is on REF+ and REF-.
But I think when REFBUF is enable, REF+ and REF- should be Hi-Z, so users don't need to care about C and REF+/- should be open.
Is my understanding correct?
Could you give me your advice?