AnsweredAssumed Answered

AD9705 DAC Failure

Question asked by 1Vu on Mar 3, 2016
Latest reply on Apr 26, 2016 by larrywelchusa


I'm currently using the AD9705 in conjunction with the ADA4430-1 for a video design project. The design works. However, After a few months of field trial , several units came back without video. I measured all the signals going into the DAC and they all present. There is no short circuit, missing parts, and all the voltage rails are present.


When i measured the output of the ADA4430-1 and AD9705 ICs there were no video signals at either of the outputs.  All the logic signals are at the correct state.


If i swap out the video board there is video.


I'm unable to determine the what causes the AD9705 and ADA4430-1 to fail.