| Electronics > Beginners |
| USB 3.0 to SATA and back |
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| AE7OO:
Hello, I'm trying to setup a completely isolated system. Everywhere I read(outside of single ap note from Analog) various sources say that it is not possible to isolate USB 2.0 HS or any form of USB 3.0. But I have seen at least 2 different USB 3.0 to SATA converters out in the wild. And last time I checked, SATA used LVDS as its signaling layer. And there are 3 chips from Analog alone that will isolate LVDS at 600Mbps. So why would the following not work: Via Tech VL713 -- USB 3 to SATA Analog Devices ADN4651 -- LVDS isolator with a max data rate of 600Mbps USB 3.0 cable --> USB 3.0 socket -> usb 3.0 --> VIA VL713 --> LVDS --> AD4651 --> LVDS --> VIA VL713 --> usb 3.0 --> usb3.0 socket --> usb 3.0 cable Yes, it is a little round about and limited to 600Mbps, which is still MUCH faster than the current USB limit of 12Mbps. With some attention to detail and not doing anything stupid, I don't see any problems. VL710/3/6 $3 - $5 -- AliExpress -- https://datasheet.lcsc.com/szlcsc/VIA-Tech-VL716-Q4_C69727.pdf AD4651 $10 -- Mouser -- https://www.analog.com/media/en/technical-documentation/data-sheets/ADN4650-4651-4652.pdf The board would cost around $40 to make, I think. Should this work :-+, or am I digging a whole I can't get out of?? |O |
| DC1MC:
Get two of these 4KV isolated babies and mount them head to head, problem solved: https://www.coolgear.com/product/gigabit-ethernet-usb31-gen1-adapter-4kv-isolation-mounting-kit As software use the nice and delicate USB over Ethernet drivers for Windozer: http://www.usb-over-ethernet.com/ Linux has this: http://usbip.sourceforge.net/ It will be like 169 times easier than fidgeting with SATA drivers and 2096 times more portable and supported.. Cheers, DC1MC It will be like |
| ogden:
--- Quote from: AE7OO on April 24, 2019, 04:50:02 am ---Should this work --- End quote --- No. USB to SATA converters are not just physical interface converters. You can't connect such back to back and expect that signals will go through. They won't. --- Quote ---Everywhere I read(outside of single ap note from Analog) various sources say that it is not possible to isolate USB 2.0 HS --- End quote --- Have you tried to search for actual USB 2.0 HS isolator product? |
| magic:
In addition to what everyone said so far: --- Quote from: AE7OO on April 24, 2019, 04:50:02 am ---SATA 600Mbps --- End quote --- Ahem. |
| David Hess:
USB to fiber converters exist for extended range applications which could be used for galvanic isolation. |
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