I2S Signal Isolation Board [ADUM4160]

[ittaly]

If you're okay with a soldering iron and basic DIY, this may be an option for some decent low-$ improvements in USB.

 

https://i.postimg.cc/Gmzs30ZT/S02f7fe510ce345299f33831d973185bei.jpg

https://i.postimg.cc/T3TDX2HX/S11015fae8d5c4a2b92edeae68df38e0ac.jpg

 

The Analog Devices basis part is here:

https://www.analog.com/media/en/technical-documentation/data-sheets/ADuM4160.pdf

It has been around since 2009 and is a bit $$ by itself (Digikey, Mouser). Ali has them for much less $.

There may be better choices for this part. Unfortunately, Potato Semi is no longer active.

[ittaly]

Some alternative to that digital isolator IC chip, and they are faster than the AD:

TI:    ISO7240

NVE: IL715E