Tool/software:
Hi,
I am using the TUSB501 redriver in my design and as a general rule, I'm trying to place ferrite beads in the VCC pin(s) of most of my components, mostly for debug purposes.
Since USB3 operates at a very high frequency and is very sensitive, I was wondering if placing a ferrite bead in series with the VCC pin (along with capacitors after and maybe before the ferrite bead) will hurt the performance/degrade the eye diagram of the USB3 SS signals.
The motivation for placing the ferrite is, as I said, mostly for debug purposes, but specifically for the USB3 interface I think it can be beneficial to reduce noise on the VCC pin. I can choose a ferrite which has a relatively high impedance in high frequencies like 1GHz (say over 200Ω) and has a low DC resistance, but I worry this will actually cause more problems.
Your thoughts?
