Hi Alex and D. Hartl,
I received PCN20131231000 yesterday which says that PCM1691 is EOL and lists PCM1690 as "Same functionality and PIN-OUT as the compared device but is NOT an exact equivalent."
The PCM1691 data sheet says to ground pins 30, 32, 34, 36, 38, 40, 42, and 44.
The PCM1690 data sheet says to connect those same pins according to network shown on page 38 of data sheet. If PCM1690 will not operate with those pins grounded, then I don't believe you can assert that the two parts have the same pin out. Can the PCM1690 have its inverted analog outputs grounded and still meet the specifications of the data sheet?
Thanks!
Rob