Sensor device and a method of current modulation switching using a two-wire current interface
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United States of America Patent
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Dec 1, 2020
Grant Date -
Oct 8, 2020
app pub date -
Jun 17, 2020
filing date -
May 14, 2018
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Abstract
A sensor device includes a two-pin current interface including an input pin configured to draw an input current and an output pin configured to output an output current, a sensor configured to generate a measurement signal, and a current modulator configured to generate a current pulse as the output current such that the output current toggles between at least two main current states based on the measurement signal. The current modulator is configured to modulate the output current such that the output current is increased, to a first current level greater than the at least two main current states, at an initial phase of the current pulse for a first duration, and to modulate the output current such that the output current is decreased, to a second level less than the at least two main current states, at a terminal phase of the current pulse for a second duration.
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