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AD7609 reference load current

Question asked by marekm on Mar 5, 2016
Latest reply on Mar 7, 2016 by Gnib

I can't find this specified in the datasheet - what is the reasonable maximum load on the REF pin when used as output (driving other AD7609s, and possibly some other circuits)?

I can add an external reference if necessary (too much load), but the internal one seems to be good enough (except for the unknown maximum load).

Also, can't find any specifications of the buffered 4.5V on REFCAPA/B pins - how accurate is it, how much current can it source/sink?