I have a query about the OPA656 op-amp data sheet:
Table 7.6 on page 7 refers to the “high grade” version of the part. However, I have no idea how to identify high grade parts from the device part numbers. i.e. what part number suffixes signify the high grade parts? In other words, which parts listed in the Packaging Information table on page 25 are “high grade” parts?
The OPA656B versions were introduced long ago with a 100% screen at final test for both offset and offset drift. Test really resisted that, but it ended up working very well - that guaranteed drift is much better than the new OPA814 drop in that will certainly not have that screen any more. not bad at 3.5uV vs the B grade 2uV, but they stopped putting test levels in the far right column, I would be assuming this is not tested.
