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ADG772 USB 2.0 480Mbps Eye diagram

Question asked by JerryS on May 6, 2015
Latest reply on May 8, 2015 by Stephen_Nugent


I design in ADG772BCPZ for portable USB storage application with SATA controller ASM1153E

customer takes his own product to do USB 2.0 480Mbps test in certification lab, but the eye diagram is fail.

After fail, customer provide ADG772 EVB to lab re-test. ADI EVB is test fail, too.

customer provide ADG772 EVB condition, and eye diagram as below.

please kindly give me some of suggestion.


Waveform Plot.jpg

Eye Diagram.jpg


test condition.jpg