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How to implement isolated 1-Wire bus

Posted: 12 Nov 2012     Print Version  Bookmark and Share

Keywords:1-Wire  authentication  calibration  sensors 

The 1-Wire bus has become more and more popular for the authentication and calibration of sensors and consumables in medical equipment, where galvanic isolation is required. This article explains how to modify existing 1-Wire master circuits to implement galvanic isolation. In addition to the classic optoisolators, digital isolators using magnetic and capacitive coupling have been developed in recent years. This application note introduces each of these technologies and product lines, and identifies and compares isolators that are suitable for use in 1-Wire master circuits.

View the PDF document for more information.

Originally published by Maxim Integrated at as "Implementing an Isolated 1-Wire Bus".

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