ISL29043
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ISL29043IROMZ-EVALZ (pdf) |
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Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output ISL29043 The ISL29043 is an integrated ambient and infrared light-to-digital converter with a built-in IR LED and I2C Interface SMBus Compatible . This device uses two independent ADCs for concurrently measuring ambient light and proximity in parallel. The flexible interrupt scheme is designed for minimal microcontroller utilization. For ambient light sensor ALS data conversions, an ADC converts photodiode current with a light sensitivity range up to 2000 Lux in 100ms per sample. The ADC rejects 50Hz/60Hz flicker noise caused by artificial light sources. For proximity sensor Prox data conversions, the built-in driver turns on an internal infrared LED and the proximity sensor ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise such as sunlight and has a 540us conversion time. The ISL29043 provides low power operation of ALS and proximity sensing with a typical 136uA normal operation current 110uA for sensors and internal circuitry, ~28uA for LED with 220mA current pulses for a net 100us, repeating every 800ms or under . The ISL29043 uses both a hardware pin and software bits to indicate an interrupt event has occurred. An ALS interrupt is defined as a measurement that is outside a set window. A proximity interrupt is defined as a measurement over a threshold limit. The user may also require that both ALS/Prox 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 -40°C to +85°C ambient temperature range. It is packaged in a clear, lead-free 10 Ld ODFN package. • Internal LED + Sensor = Complete Solution • Works Under All Light Sources Including Sunlight • Dual ADCs Measure ALS/Prox Concurrently • <1.0uA Supply Current When Powered Down • Temperature Compensated • Pb-Free RoHS compliant Intelligent and Flexible Interrupts • Independent ALS/Prox Interrupt Thresholds • Adjustable Interrupt Persistency - 1/4/8/16 Consecutive Triggers Required Before Interrupt • Display and Keypad Dimming Adjustment and Proximity Sensing for - Mobile Devices Smart Phone, PDA, GPS - Computing Devices Laptop PC, Netbook, Tablet PC - Consumer Devices LCD-TV, Digital Picture Frame, Digital Camera - Industrial and Medical Light and Proximity Sensing Related Literature • See AN1436, “Proximity Sensors” R1 10kΩ VLED SLAVE_0 1 LED+ LED- 10 C1 1.0µF ADDR0 IRDR C2 C3 1µF 0.1µF 3 VDD 4 GND 5 REXT INT 8 SDA 7 SCL 6 ISL29043 REXT 499kΩ R2 R3 10kΩ 10kΩ VI2C PULL-UP SLAVE_1 SDA I2C SLAVE_n SDA I2C MASTER µCONTROLLER INT SDA SCL FIGURE TYPICAL APPLICATION DIAGRAM PROX COUNTS 8-BIT 204 110mA 18% GREY CARD 220mA 18% GREY CARD 110mA WHITE COPY PAPER 220mA WHITE COPY PAPER 51 DISTANCE mm FIGURE PROXIMITY RESPONSE vs DISTANCE April 28, 2016 FN7935.2 CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. Ordering Information PART NUMBER Notes 1, 2, 3 TEMP. RANGE °C PACKAGE Tape & Reel Pb-free PKG. DWG. # ISL29043IROMZ-T7 -40 to +85 10 Ld Optical Co-package L10.2.1x3.5E ISL29043IROMZ-EVALZ Evaluation Board Please refer to TB347 for details on reel specifications. 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. For Moisture Sensitivity Level MSL , please see device information page for ISL29043. For more information on MSL please see tech brief TB477. FN7935.2 April 28, 2016 ISL29043 Absolute Maximum Ratings TA = +25°C VDD Supply Voltage between VDD and GND .4.0V I2C Bus Pin Voltage SCL, SDA . -0.5V to 4.0V I2C Bus Pin Current SCL, SDA . <10mA REXT Pin Voltage .-0.5V to VDD + 0.5V IRDR Pin Voltage .5.5V ADDR0 Pin Voltage. .-0.5V to VDD + 0.5V INT Pin Voltage -0.5V to 4.0V INT Pin Current <10mA ESD Rating Human Body Model Note 6 2kV Thermal Information Thermal Resistance Typical °C/W °C/W 10 Ld Optical Module Package Notes 4, 5 113 Maximum Die Temperature +90°C Storage Temperature -40°C to +85°C Operating Temperature -40°C to +85°C Pb-Free Reflow Profile see TB489 CAUTION Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. For the “case temp” location is the center of the exposed metal pad on the package underside. ESD is rated at 2kV HBM on all pins except IRDR, which is rated at 1kV. IMPORTANT NOTE All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore TJ = TC = TA Electrical Specifications VDD = 3.0V, TA = +25°C, REXT = 499kΩ 1% tolerance. PARAMETER CONDITION Power Supply Range SR_VDD Input Power-up Slew Rate VDD Rising Edge between 0.4V and 2.25V IDD_OFF Supply Current when Powered Down ALS_EN = 0 PROX_EN = 0 IDD_NORM Supply Current for ALS+Prox in Sleep Time ALS_EN = 1 PROX_EN = 1 |
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