Austriamicrosystems introduced what it claims is the world’s first lightning sensor IC, the AS3935 Franklin Lightning Sensor with an embedded intelligent algorithm. The device utilises a sensitive RF receiver which detects the electrical emissions from lightning activity. A proprietary algorithm then converts the RF signal into an estimation of the distance to the head of the storm, from 40 km down to 1 km, while rejecting disturbances from man-made signals such as motors and microwave ovens. With multiple low-power modes, a listening mode current consumption of 60 μA and housed in a 4 x 4 mm 16-pin MLPQ package, the AS3935 can be integrated into a variety of portable or outdoor devices as well as in-building equipment.
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