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Interfacing high-voltage applications to low-power controllers

December 14, 2011 // Thomas Kugelstadt, TI // 0 comments

Interfacing high-voltage applications to low-power controllers Download White Paper 529Ko

A common requirement of industrial applications is to interface high-voltage potentials, such as signal outputs of sensor switches and AC rectifiers, to the peripheral input ports of low-voltage MCUs and DSPs. A new generation of interface circuits providing this function are digital-input serializer (DIS) devices. This paper explains the functional principle of a DIS and its configuration in a typical industrial interface design.


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The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted wirelessly using RF-technology. The technology is very easy to install, fit and forget, with two standardised package versions for industrial applications: a rocker switch for actuation by hand and a snap-action switch for mechanical actuation.

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