hi dear supporting team,
customer is using TPS7A801 to supply 5V for LMH6321, with 10uF,0.1u,1nF bypass cap close to the pin, and also a ferrit bead of 150Ohm in seriers. there are around 50% brds have 28kHz glitchs at the output of LMH6321, if change the power supply of LMH6321 to external DC-DC, then there is no such issue. from some experiment we think it is some reasonance btw the power supply pin of LMH6321 and TPS7A801, we triied more bypass cap btw them, while no improvement. and the TPS7A801 also be power supply for some other amp, it seems has no such issue. the load of LMH6321 is a switch, so for LMH6321 power supply , if the loading is heavy, is there any more effort we could take? tks a lot!
