DATASHEET ISL29035 FN8371 Rev 3.00 Integrated Digital Light Sensor with Interrupt December 12, 2016 The ISL29035 is an integrated ambient and infrared Features 2 light-to-digital converter with I C (SMBus compatible) Interface. Its Resolution . 16-bit ADC advanced self-calibrated photodiode array emulates human eye response with excellent IR rejection. The on-chip ADC is capable Wide dynamic range 1:4,200,000 of rejecting 50Hz and 60Hz flicker caused by artificial light Integrated noise reduction . 50/60Hz sources. The Lux range select feature allows users to program the Close to human eye response with excellent IR/UV rejection Lux range for optimized counts/Lux. Shutdown modes software and automatic For ambient light sensing, an internal 16-bit ADC has been designed based upon the charge-balancing technique. The Programmable interrupt threshold with persistence filter ADC conversion time is nominally 105ms and is user Supply current (typical) . 57A adjustable from 11s to 105ms, depending on oscillator Shutdown current (maximum) . 0.51A frequency and ADC resolution. In normal operation, typical 2 current consumption is 57A. In order to further minimize I C (SMB compatible) power supply . 1.7V to 3.63V power consumption, two power-down modes have been Sensor power supply . 2.25V to 3.63V provided. If polling is chosen over continuous measurement of Operating temperature range . -40C to +85C light, the auto power-down function shuts down the whole chip after each ADC conversion for the measurement. The other Small form factor package . 6 Ld 1.5x1.6x0.75 ODFN 2 power-down mode is controlled by software via the I C interface. The power consumption can be reduced to less than Applications 0.3A when powered down. Mobile devices: smart phone, PDA, GPS The ISL29035 supports a software brownout condition Computing devices: notebook PC, MacBook, tablets detection. The device powers up with the brownout bit asserted 2 Consumer devices: LCD-TV, digital camera until the host clears it through the I C interface. Industrial and medical light sensing The ISL29035 supports a software and hardware interrupt that 2 remains asserted until the host clears it through the I C Related Literature interface. Function of ADC conversion continues without stopping after interrupt is asserted. AN1591, Evaluation Hardware/Software Manual for ALS and Proximity Sensor 2 Designed to operate on supplies from 2.25V to 3.63V with an I C supply from 1.7V to 3.63V, the ISL29035 is specified for TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS operation across the -40C to +85C ambient temperature NUMBER OF range. PART NUMBER ALS SENSING INTERRUPT PIN PINS ISL29034 Yes No 4 Ld ISL29035 Yes Yes 6 Ld FN8371 Rev 3.00 Page 1 of 17 December 12, 2016ISL29035 100 VDD PULLUP VDD 1F 1.2 4.7k 4.7k 4.7k 1 1.0 HUMAN EYE VDD 0.8 SDA SDA 6 AMBIENT LIGHT SENSOR 0.6 SCL SCL 3 MCU 5 ISL29035 NC 0.4 GPIO 4 INT 0.2 GND 2 0 300 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) FIGURE 2. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT FIGURE 1. ISL29035 TYPICAL APPLICATION DIAGRAM LIGHT SENSING FN8371 Rev 3.00 Page 2 of 17 December 12, 2016 NORMALIZED RESPONSE