DATASHEET ISL29043 FN7935 Rev 2.00 Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital April 28, 2016 Output The ISL29043 is an integrated ambient and infrared Features 2 light-to-digital converter with a built-in IR LED and I C Interface Internal LED + Sensor = Complete Solution (SMBus Compatible). This device uses two independent ADCs for concurrently measuring ambient light and proximity in Works Under All Light Sources Including Sunlight parallel. The flexible interrupt scheme is designed for minimal Dual ADCs Measure ALS/Prox Concurrently microcontroller utilization. <1.0A Supply Current When Powered Down For ambient light sensor (ALS) data conversions, an ADC Temperature Compensated converts photodiode current (with a light sensitivity range up to Pb-Free (RoHS compliant) 2000 Lux) in 100ms per sample. The ADC rejects 50Hz/60Hz flicker noise caused by artificial light sources. Intelligent and Flexible Interrupts For proximity sensor (Prox) data conversions, the built-in driver Independent ALS/Prox Interrupt Thresholds turns on an internal infrared LED and the proximity sensor ADC Adjustable Interrupt Persistency converts the reflected IR intensity to digital. This ADC rejects - 1/4/8/16 Consecutive Triggers Required Before Interrupt ambient IR noise (such as sunlight) and has a 540s conversion time. Applications The ISL29043 provides low power operation of ALS and Display and Keypad Dimming Adjustment and Proximity proximity sensing with a typical 136A normal operation Sensing for: current (110 A for sensors and internal circuitry, ~28A for - Mobile Devices: Smart Phone, PDA, GPS LED) with 220mA current pulses for a net 100 s, repeating - Computing Devices: Laptop PC, Netbook, Tablet PC every 800ms (or under). - Consumer Devices: LCD-TV, Digital Picture Frame, Digital The ISL29043 uses both a hardware pin and software bits to Camera indicate an interrupt event has occurred. An ALS interrupt is - Industrial and Medical Light and Proximity Sensing defined as a measurement that is outside a set window. A proximity interrupt is defined as a measurement over a Related Literature threshold limit. The user may also require that both ALS/Prox See AN1436, Proximity Sensors interrupts occur at once, up to 16 times in a row before activating the interrupt pin. The ISL29043 is designed to operate from 2.25V to 3.63V over the -40C to +85C ambient temperature range. It is packaged in a clear, lead-free 10 Ld ODFN package. 255 V PULL-UP 2 I2C I C MASTER 204 R1 R2 R3 CONTROLLER 10k 10k 10k 110mA (18% GREY CARD) INT SDA V 220mA (18% GREY CARD) DD 153 SCL V LED SLAVE 0 1 10 LED+ LED- 2 110mA (WHITE COPY PAPER) SLAVE 1 I C SLAVE n C1 102 9 1.0F 2 SDA SDA ADDR0 IRDR 220mA (WHITE COPY PAPER) 3 8 SCL SCL V DD INT C2 C3 7 51 4 1F 0.1F GND SDA 5 6 REXT SCL ISL29043 0 R EXT 0 25 50 75 100 125 150 499k DISTANCE (mm) FIGURE 2. PROXIMITY RESPONSE vs DISTANCE FIGURE 1. TYPICAL APPLICATION DIAGRAM FN7935 Rev 2.00 Page 1 of 16 April 28, 2016 NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PART ISL29044A PROX COUNTS (8-BIT)ISL29043 ISL29043 Block Diagram VDD 3 ALS PHOTODIODE ARRAY COMMAND REGISTER LIGHT DATA DUAL CHANNEL PROCESS DATA ADCs ALS AND IR REGISTER 2 ADDR0 2 6 SCL I C IR PHOTODIODE ARRAY 7 SDA IREF INTERRUPT 8 INT FOSC 9 IRDR IR DRIVER 4 1 5 10 REXT GND LED+ LED- Pin Configuration Pin Descriptions ISL29043 PIN PIN NAME DESCRIPTION (10 LD 2.1x3.5 (mm) OPTICAL CO-PACKAGE) TOP VIEW 0 T-PAD Thermal pad. Floating - do not connect to GND or VDD 1 LED+ Anode of IR-LED 2 LED+ 1 10 LED- 2ADDR0I C address pin - pull high or low (do not float) 3 VDD Positive supply: 2.25V to 3.63V ADDR0 2 9 IRDR 4GND Ground VDD 3 8 INT 5 REXT External resistor (499k 1%) connects this pin to ground. SDA GND 4 7 2 2 6SCL I C clock line The I C bus lines can be pulled from REXT 5 6 SCL 1.7V to above V , 3.63V max. 2 DD 7SDA I C data line *THERMAL PAD MUST BE LEFT 8INT Interrupt pin Logic output (open-drain) for interrupt FLOATING 9 IRDR IR-LED driver pin - current flows into ISL29043 from LED cathode 10 LED- Cathode of IR-LED Ordering Information PACKAGE PART NUMBER TEMP. RANGE Tape & Reel PKG. (Notes 1, 2, 3) (C) (Pb-free) DWG. ISL29043IROMZ-T7 -40 to +85 10 Ld Optical Co-package L10.2.1x3.5E ISL29043IROMZ-EVALZ Evaluation Board NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets: molding compounds, die attach materials, NiPdAu plate (e4 termination finish), which are all RoHS compliant. The ISL29043 is compatible with limited SnPb and Pb-free soldering operations. The ISL29043 is MSL classified. See Tech Brief TB489 (Surface Mount Guidelines for Optical Co-packages) for reflow profile and more information. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL29043. For more information on MSL please see tech brief TB477. FN7935 Rev 2.00 Page 2 of 16 April 28, 2016