ISL29028AIROZ-T7 Renesas

DATASHEET ISL29028A FN7721 Rev 3.00 Low Power Ambient Light and Proximity Sensor with Intelligent Interrupt and January 29, 2014 Sleep Modes The ISL29028A 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 driver Selectable 125/2000 Lux Range turns on an external infrared LED and the proximity sensor Proximity Sensing ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise (such as sunlight) and has a 540 s Proximity Sensor with Broad IR Spectrum conversion time. - Can Use 850nm and 950nm External IR LEDs 2 IR LED Driver with I C Programmable Sink Currents The ISL29028A provides low power operation of ALS and proximity sensing with a typical 138A normal operation current -Net 100s Pulse with 110mA or 220mA Amplitudes (110A for sensors and internal circuitry, ~28A for external LED) - Periodic Sleep Time up to 800ms Between Pulses with 220mA current pulses for a net 100s, repeating every Ambient IR Noise Cancellation (Including Sunlight) 800ms (or under). Intelligent and Flexible Interrupts The ISL29028A uses both a hardware pin and software bits to Independent ALS/Prox Interrupt Thresholds indicate an interrupt event has occurred. An ALS interrupt is Adjustable Interrupt Persistency defined as a measurement which is outside a set window. A - 1/4/8/16 Consecutive Triggers Required Before Interrupt proximity interrupt is defined as a measurement over a Ultra Low Power threshold limit. The user may also require that both ALS/prox 138A DC Typical Supply Current for ALS/Prox Sensing interrupts occur at once, up to 16 times in a row before activating the interrupt pin. -110 A for Sensors and Internal Circuitry -28 A Typical Current for External IR LED (Assuming The ISL29028A is designed to operate from 2.25V to 3.63V over 220mA for 100 s Every 800ms) the -40C to +85C ambient temperature range. It is packaged in <1.0 A Supply Current When Powered Down a clear, lead-free 8 lead ODFN package. Easy to Use Applications Set Registers Wait for Interrupt 2 I C (SMBus Compatible) Output Display and Keypad Dimming Adjustment and Proximity 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 2 - Consumer Devices: LCD-TV, Digital Picture Frame, Digital 1.7V to 3.63V Supply for I C Interface Camera 2.25V to 3.63V Sensor Power Supply Industrial and Medical Light and Proximity Sensing Pb-Free (RoHS Compliant) 2 I C Address Selection Pin FN7721 Rev 3.00 Page 1 of 16 January 29, 2014ISL29028A 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 ISL29028A 8 LD ODFN (2.0MMX2.1MMX0.7MM) PIN PIN TOP VIEW NUMBER NAME DESCRIPTION 0 T.PAD Thermal Pad (connect to GND or float) ADDR0 1 8 IRDR 2 1ADDR0I C address pin - pull high or low VDD 2 7 INT THERMAL (do not float) PAD GND 3 6 SDA 2 VDD Positive supply: 2.25V to 3.63V REXT 4 5 SCL 3GNDGround 4 REXT External resistor (499k 1%) connects this *THERMAL PAD CAN BE CONNECTED TO GND OR pin to ground ELECTRICALLY ISOLATED 2 2 5SCLI C clock line The I C bus lines can be pulled from 1.7V to above V , 3.63V DD 2 6SDAI C data line max 7INT Interrupt pin Logic output (open-drain) for interrupt 8 IRDR IR LED driver pin - current flows into ISL29028A from LED cathode Ordering Information PACKAGE PART NUMBER TEMP. RANGE Tape & Reel PKG. (Notes 1, 2, 3) (C) (Pb-free) DWG. ISL29028AIROZ-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 ISL29028A. For more information on MSL, please see Technical Brief TB477. FN7721 Rev 3.00 Page 2 of 16 January 29, 2014