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2014-03-15-06-33-43-300x295.jpg
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README.md
USB Isolator workshop.pdf
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usb-isolator.brd
usb-isolator.gtp
usb-isolator.sch

README.md

USB Isolator PCB

Notes

This is a very simple PCB so little documentation is needed. Information about the isolation can be found in the ADUM3160 data sheet.

It is VERY important to realise that the power needs to come from a plug pack and not the computer. Supplying power to the power input from the computer removes most of the isolation (data is still isolated).

Note that pin one is not marked on early versions of the PCB. Please refer to the photo in this repository.

Parts

PCBs are for sale on Tindie

All the USB connectors were originally purchased on ebay.

You may be able to get a sample of the ADUM3160BRWZ from Analog Devices.

The parts list is below, thanks to Mike for supplying the connector part numbers, the rest should be fairly easy to determine.

Qty Value Device Parts Description Digikey
2 10uF C-EUC0805K C1, C6 10uF 0805 Ceramic Capacitor
4 0.1uF C-EUC0805K C2, C3, C4, C5 0.1uF 0805 Ceramic Capacitor
1 47uF CPOL-EUD/7343-31W C7 47uF 2917 Size "D" Tantalum Capacitor
4 24R R-EU_M0805 R1, R2, R3, R4 24R 0805 5% resistor
1 10K R-EU_M0805 R5 10k 0805 5% resistor
2 1K R-EU_M0805 R6, R7 1k 0805 5% resistor (rev 1.2 and later)
2 GREEN LED-0805 LED1, LED2 Green 0805 LED (rev 1.2 and later)
1 ADUM3160BRWZ SO16W IC1 Analog Devices ADUM3160BRWZ
1 CON-USB-F-2PB CON-USB-F-2PB USBOUT USB SMD Female connector with 2 body pins 1175-1016-ND
2 CON-USB-F-MINI-B CONN_USB_MINI-B POWER, USBIN USB Mini Female connector 609-4700-1-ND
1 PCB_DP_SQUARE-5X5 DP5050_V1 USB-ISOLATOR USB Isolator PCB NA