Hi,
During the shipping test, one out of 100 units had an issue where it did not pass the aging test. When we checked the signal on an oscilloscope, we discovered that it was outputting an unexpected pulse and that this was the reason for it not passing the test. Specifically, a whisker-like pulse is occurring on the output of pin 37 (RxOUT09) of the DS90CR286AMTD/NOPB.
We also performed an A-B-A swap and it did not reproduce with other chips. Since this is a problem with 1/100 pcs, there is a possibility that the problem depends on a specific chip, but is it possible to receive any comments on possible causes?
Thanks,
Conor