DATASHEET ISL29029 FN7682 Rev 0.00 Low Power Ambient Light and Proximity Sensor with Intelligent Interrupt and November 23, 2010 Sleep Modes The ISL29029 is an integrated ambient and infrared light-to- Features 2 digital converter with a built-in IR LED driver and I C Interface Works Under All Light Sources Including Sunlight (SMBus Compatible). This device uses two independent ADCs for concurrently measuring ambient light and proximity in Dual ADCs Measure ALS/Prox Concurrently parallel. The flexible interrupt scheme is designed for minimal Intelligent Interrupt Scheme Simplifies C Code microcontroller utilization. 0.5% Typical Nonlinearity For ambient light sensor (ALS) data conversions, an ADC Ambient Light Sensing converts photodiode current (with a light sensitivity range up to Simple Output Code Directly Proportional to lux 2000 Lux) in 100ms per sample. The ADC rejects 50Hz/60Hz 50Hz/60Hz Flicker Noise and IR Rejection flicker noise caused by artificial light sources. Light Sensor Close to Human Eye Response For proximity sensor (PROX) data conversions, the built-in Selectable 125/2000 Lux Range driver turns on an external infrared LED and the proximity Proximity Sensing sensor ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise (such as sunlight) and has a Proximity Sensor with Broad IR Spectrum 540s conversion time. - Can Use 850nm and 950nm External IR LEDs 2 IR LED Driver with I C Programmable Sink Currents The ISL29029 provides low power operation of ALS and PROX sensing with a typical 138A normal operation current (110A for -Net 100s Pulse with 110mA or 220mA Amplitudes sensors and internal circuitry, ~28A for external LED) with - Periodic Sleep Time up to 800ms Between Pulses 220mA current pulses for a net 100s, repeating every 800ms Ambient IR Noise Cancellation (Including Sunlight) (or under). Intelligent and Flexible Interrupts The ISL29029 uses both a hardware pin and software bits to Independent ALS/PROX Interrupt Thresholds indicate an interrupt event has occurred. An ALS or PROX Adjustable Interrupt Persistency interrupt is defined as a measurement which is outside a set - 1/4/8/16 Consecutive Triggers Required Before Interrupt window. The user may also require that both ALS/PROX Ultra Low Power interrupts occur at once, up to 16 times in a row before 138A DC Typical Supply Current for ALS/Prox Sensing activating the interrupt pin. -110A for Sensors and Internal Circuitry The ISL29029 is designed to operate from 2.25V to 3.63V over -28 A Typical Current for External IR LED (Assuming the -40C to +85C ambient temperature range. It is packaged in 220mA for 100s Every 800ms) a clear, lead-free 8 lead ODFN package. <1.0A Supply Current When Powered Down Applications Easy to Use Set Registers Wait for Interrupt Display and Keypad Dimming Adjustment and Proximity 2 I C (SMBus Compatible) Output Sensing for: Temperature Compensated - Mobile Devices: Smart Phone, PDA, GPS Tiny ODFN8 2.0x2.1x0.7 (mm) Package - Computing Devices: Laptop PC, Netbook Additional Features - Consumer Devices: LCD-TV, Digital Picture Frame, Digital 2 Camera 1.7V to 3.63V Supply for I C Interface Industrial and Medical Light and Proximity Sensing 2.25V to 3.63V Sensor Power Supply Pb-Free (RoHS compliant) 2 I C Address Selection Pin FN7682 Rev 0.00 Page 1 of 16 November 23, 2010ISL29029 Block Diagram VDD 2 ALS PHOTODIODE ARRAY COMMAND REGISTER LIGHT DATA DUAL CHANNEL PROCESS DATA ADCs ALS AND IR REGISTER 1 ADDR0 2 5 SCL I C IR PHOTODIODE ARRAY 6 SDA IREF INTERRUPT INT 7 FOSC IRDR 8 IR DRIVER 3 4 REXT GND Pin Configuration Pin Descriptions ISL29029 8 LD ODFN (2.0x2.1x0.7mm) PIN PIN TOP VIEW NUMBER NAME DESCRIPTION 0 T.PAD Thermal Pad (connect to GND or float) ADDR0 1 8 IRDR 2 1 ADDR0 I C address pin - pull high or low (do not float) VDD 2 7 INT THERMAL 2 VDD Positive supply: 2.25V to 3.63V PAD GND 3 6 SDA 3GNDGround REXT 4 5 SCL 4 REXT External resistor (499k 1%) connects this pin to ground *THERMAL PAD CAN BE CONNECTED TO GND OR ELECTRICALLY ISOLATED 2 2 5SCLI C clock The I C bus lines can be pulled line from 1.7V to above V , 3.63V DD max 2 6SDAI C data line 7INT Interrupt pin Logic output (open-drain) for interrupt 8 IRDR IR LED driver pin - current flows into ISL29029 from LED cathode Ordering Information PACKAGE PART NUMBER TEMP. RANGE Tape & Reel PKG. (Notes 1, 2, 3) (C) (Pb-free) DWG. ISL29029IROZ-T7 -40 to +85 8 Ld ODFN L8.2.1x2.0 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 and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL29029. For more information on MSL please see techbrief TB363. FN7682 Rev 0.00 Page 2 of 16 November 23, 2010