AS3935 Franklin Lightning Sensor™ IC

AS3935 Franklin Lightning Sensor™ IC

Franklin Lightning SensorTM IC with embedded distance estimation algorithm.

 

The Franklin Lightning Sensor™ is the world’s 1st lightning-sensing IC that was designed for low-power, portable or fixed wire-line applications. 

Utilizing a sensitive RF receiver and integrated proprietary algorithm, the Franklin Lightning Sensor™ detects the electrical emissions from lightning activity and then provides an estimation of the distance to the head of the storm from 40km away down to 1km, while rejecting disturbances from man-made signals such as motors and microwave ovens.
This advanced warning capability alerts users so that precautions can be taken.

Block Diagram AS3935 Franklin Lightning Sensor™ IC

AS3935
Franklin Lightning Sensor™ IC
features and benefits

Features:

  • Detection of both cloud to ground and cloud to cloud lightning activity within a 40km range
  • Intelligent algorithm provides for false disturber rejection
  • Supply voltage range of 2.4-5.5V with power down, listening and active power modes
  • Antenna auto tuning
  • Small MLPW-16 (4mmx4mm) package

Benefits:

  • Provides early warning beyond human senses and gives distance estimation to head of storm
  • Algorithm reduces false indications
  • Selectable power modes make it suitable for low power portable devices
  • Antenna auto tuning provides for optimal receive performance
  • Suitable for portable battery powered applications

Product properties

  • Distance range [km] 40 km
  • Supply [V] 2.4 - 5.5
  • Current Consumption [(PD/Listening/Active) µA] 1 / 60 / 350
  • Interface SPI or I²C
  • Temperature Range [°C] -40 to +85
  • Package MLPQ-16 (4x4)

Applications

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Demo kit

The AS3935 Franklin Lightning Sensor™ demo kit is a fully operational handheld lightning sensor which estimates distance to the head of upcoming storms. Lightning events will trigger the AS3935 demo kit and will be shown on the LCD in addition to an audio signal. The AS3935 Franklin Lightning Sensor™ demo kit comes with a handheld lightning emulator board in order to emulate the presence of a storm.