Other Parts Discussed in Thread: OPA350, ADS1294
Hi Champs,
A customer is using a ADS129xR but he has some tight constraints on the power consumption of the design.
The datasheet states the external reference circuit should look like this:

We understand that the fast buffer, OPA350, is essential to provide the current demand for switching capacitance in SAR ADCs but is there also the same justification for this buffer with Delta-Sigma ADCs? Does he run into the same problem as stated here or is this less critical for delta-sigma ADCs: