SEN-15441 SparkFun

AS3935 Franklin Lightning Sensor IC The AS3935 is a programmable fully integrated Lightning General Description 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. The AS3935 can also provide information on the noise level and inform the external unit (e.g. microcontroller) in case of high noise conditions, with the noise floor generator and noise floor evaluation blocks. The AS3935 can be programmed via a 4-wire standard SPI and is also compatible with IC. Also, in case the latter is chosen, it is possible to choose among three different addresses. Two clocks are internally generated by two different RC-Oscillators: TRCO and SRCO. An automatic calibration procedure can increase the precision of those oscillators. The AS3935 can be either supplied by an internal voltage regulator or directly by VDD. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS3935, Franklin Lightning Sensor IC are listed below: Figure 1: Added Value of Using AS3935 Benefits Features Lightning sensor warns of lightning storm activity Advanced warning ahead of human senses within a radius of 40km Distance estimation to the head of the storm from Early awareness of approaching storms overhead to 40km in 15 steps Detects both cloud-to-ground and intra-cloud Detection of both types of lightning phenomena (cloud-to-cloud) flashes Reduces false detections Embedded man-made disturber rejection algorithm Programmable detection levels enable threshold Flexibility for various applications setting for optimal controls ams Datasheet Page 1 v1-04 2016-Jan-13 Document FeedbackAS39 35 Gene ral Des c rip t ion Benefits Features SPI and IC compatible interface is used for control and register reading. A 10k pullup resistor is Flexibility with industry standard interfaces included on chip on the I2CD line. An external pullup resistor is required on I2CL in IC compatible mode. Antenna tuning to compensate variations of the Ensures optimal receive performance external components Supply voltage range 2.4V to 5.5V when using on Flexible supply range chip Vreg otherwise 2.4 to 3.6V Configurability of power modes Power-down, listening, and active mode Temperature range -40C to 85C Very small package size Package: 16LD MLPQ (4x4mm) Applications AS3935 is ideal for: Consumer Weather Stations Clocks Sports Equipment Portables Global Positioning System (GPS) Page 2 ams Datasheet Document Feedback v1-04 2016-Jan-13