AS3935 Lightning Sensor IC, Pinout, Datasheet, and Operating Modes

The AS3935 is a programmable fully integrated Lightning Sensor IC that detects the presence and approach of potentially hazardous lightning activity in the vicinity and provides an estimation on the distance to the head of the storm. The embedded lightning algorithm checks the incoming signal pattern to reject the potential man-made disturbers.

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• Lightning sensor warns of lightning storm activity within a radius of 40km

• Distance estimation to the head of the storm down to 1km in 14 steps

• Detects both cloud-to-ground and intra-cloud (cloud-to-cloud) flashe

• Embedded man-made disturber rejection algorithm

• Programmable detection levels enable threshold setting for optimal controls

• SPI and I²C interface is used for control and register reading

• Antenna Tuning to compensate variations of the external components

• Supply voltage range 2.4V to 5.5V

• Power-down, listening, and active mode

• Package: 16LD MLPQ (4x4mm)

ams AS3935-BQFT technical specifications, attributes, parameters and parts with similar specifications to ams AS3935-BQFT.

• Power-down Mode.

  In Power-down Mode, the entire AS3935 is switched off to reduce the current consumption to minimum (typ 1µA).

• Listening Mode.

  In listening mode the AFE, the watchdog, the noise floor level generation, the bias block, the TRCO, and the voltage regulator (in case it is enabled) are running. In this mode the system can push down the power consumption to a minimum (typ 60µA). In case the maximum voltage supply does not exceed 3.6V, it is possible to switch off the voltage regulator to save power. 

• Signal Verification.

  The AS3935 enters in this mode every time the watchdog detects dynamic activity picked up by the antenna. Threshold can be set in WDTH REG0x01[3:0]. The IC will leave this mode either if the incoming signal is classified as disturber or if the analysis of the single event (lightning) is finished. If the received signal is classified as a disturber, then the AS3935 will automatically go back to listening mode without any needed action from outside and an interrupt will be generated (with option bit this interrupt can be masked). If the received pattern matches all requirements, the energy calculation is performed and the AS3935 provides distance estimation.

• Weather Stations

• Clocks

• Sports EquipmentPortable

• Pool Safety

• Uninterruptible Power Supply (UPS)

• Global Positioning System (GPS)

• Cellular phones

• Watches

• Golf Equipment

AMS is a global leader in the design and manufacture of advanced sensor solutions. Their mission is to shape the world with sensor solutions by providing a seamless interface between humans and technology. AMS focuses on sensor-rich market segments, providing high-performance sensor solutions and driving true leadership in three sensing areas: optical sensing, image sensing, and audio sensing. Headquartered in Austria, AMS employs about 10,000 people globally and serves more than 8,000 customers worldwide. AMS is listed on the SIX Swiss stock exchange (ticker symbol: AMS).