Part Number: DS90UB947-Q1EVM
Hi E2E,
Good day.
In the DS90UB947-Q1EVM user's guide, there are several ferrite beads and capacitors implemented in the power pins of the DS90UB947-Q1. Do we have any design guidelines or calculation tool in selecting the appropriate ferrite beads and capacitors? Why is the1.1V supply pins are connected to Z=120ohm@100MHz ferrite beads while the 1.8 supply pins are connected to Z=1Kohm@100MHz ferrite beads.
Thank you in advance for your help.
Regards,
Carlo