Tuesday, July 13, 2010

Evaluation Board Useful for Developing and Testing USB Products

The Analog Devices iCoupler ADuM4160 USB Isolator Evaluation Board can be used as a breakout cable to test USB signals as well as its intended use to evaluate the ADUM4160 Full/Low Speed USB Digital Isolator. The board is available from Digi-Key, and other ADI distributors.

I have created my own cable for connecting a logic analyzer to USB signals in the past, but an isolation board like this would have been much easier to use and provided some protection to your prototype and development PC.  For example, I could have damaged my sole development prototype when I tested it with a cheap keyboard I purchased at Best Buy.  When things were not working, I assumed it was my hardware, but it turned out the keyboard's USB cable was not wired correctly.

I have a Zeroplus logic analyzer with USB decode that I would like to use with this type of adaptor board.  Zeroplus sells a USB bridge without isolation, but I haven't found a distributor yet.

UPDATE: FriedCircuits has a few USB tester boards that are low cost like the $12 USB Tester 2.0 shown below.

1 comment:

Paras said...

It also looks a lot more professional if you need to use it in front of a customer.