Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Features * Close responsively to the human eye spectrum * Light to Current, analog output * Good output linearity across wide illumination range * Low sensitivity variation across various light sources * Operating temperature performance, -40oC to 85oC * Wide supply voltage range, 1.8V to 5.5V * Size : 1.6mm(L)*1.6mm(W)*0.55mm(H) * RoHS compliant, Pb Free and halogen free package * Compliance with EU REACH. Description The EAALSDIC2012A3 is consisting of a photodiode and a current amplification IC. Everlight Americas ALS series product is a good effective solution to the power saving of display backlighting of mobile appliances, such as the mobile phones, NB and PDAs. Due to the high rejection ratio of infrared radiation, the spectral response of the ambient light sensor is close to that of human eyes. Applications * Detection of ambient light to control display backlighting Mobile devices - mobile phones, PDAs Computing device - TFT LCD monitor for Notebook computer Consumer device - TFT LCD TV, plasma TV, video camera, digital camera, toys * Automatic residential and commercial management * Automatic contrast enhancement for electronic signboard * Ambient light monitoring device for daylight and artificial light - Street light, CCD/CCTV 1 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Package Dimensions Top View Light Receiving Area Side View Bottom View Recommended Soldering Pattern Note: Tolerances unless mentioned 0.2mm. Unit = mm 2 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Absolute Maximum Ratings Parameter Symbol Rating Unit Supply Voltage VCC -0.5 ~ 6.0 V Output Voltage VO 0 ~ VCC-0.8 V Output Photo Current IPH 0~5 mA Operating Temperature Range Topr -40 ~ +85 Storage Temperature Range Tstg -40 ~ +100 Soldering Temperature Range [Note1] Tsol 260 Note1: For detail reflow time and the recommended temperature profile, please refer to page 8. Recommended Operating Conditions 3 Parameter Symbol Min Max Unit Operating Temperature Topr -40 +85 Supply Voltage VCC 1.8 5.5 V Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Electro-Optical Characteristics (Ta=25) Parameter Symbol Min. Typ. Max. Unit Condition Supply Current ICC ----- 480 950 A Dark Current ID ----- ----- 100 nA IPH1 2.7 4 5.4 A VCC=3V, EV=1000Lux RL=1K VCC=3V, EV=0Lux VCC=3V, EV=10Lux A VCC=3V, EV=100Lux A VCC=3V, EV=100Lux 540 A VCC=3V, EV=1000Lux ----VCC=3V,EV=100Lux RL=150K [Fig.3] ----- Light Current IPH2 IPH3 IPH4 27 --------- 40 48 400 54 92 Photocurrent Ratio IPH3/ IPH2 ----- 1.2 1.7 ----- Saturation Output Voltage VO 2.20 2.35 ----- V Peak Sensitivity Wavelength P ----- 550 ----- nm Rise Time tr ----- 11 1000 s Fall Time tf ----- 400 2000 s Delay Time td ----- 250 ----- s Storage Time ts ----- 35 ----- s Switching Time [Note1] [Note1] [Note2] [Note1] VCC=3V,EV=1000Lux RL=5K [Fig.4] Note: 1. White Fluorescent light (Color Temperature = 6500K) is used as light source. However, White LED is substituted in mass production. 2. Illuminance by CIE standard illuminant-A / 2856K, incandescent lamp. 4 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Fig.1 Block Diagram EAALSDIC2012A3 Fig.2 Measurement Method of Light Current ICC Light Source Fig.3 Measurement Method of Saturation Output Voltage Vcc Vcc Vout ALS-001 EAALSDIC2012A3 Light Source RL IL GND Fig.4 Vout EAALSDIC2012A3 ALS-001 GND Switching Time Measurement Method EAALSDIC2012A3 5 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Typical Electro-Optical Characteristics Curves Fig 5. Light Output vs. Illuminance Fig 6. Dark Current vs. Temperture (Typ.) (Typ.) 10000 Fluorescent light Incandescent lamp Light current (uA) 1000 100 10 1 0.1 1 10 100 1000 10000 Illuminance (Lux) Fig 7. Light current vs. Temperature Fig 8. Light current vs. Supply Voltage (Typ.) (Typ.) 2.0 1.8 VCE = 3V EV = 100 Lux Ta = 25J 1.4 Relative light current Relative light current 1.6 1.6 1.2 1.0 0.8 0.6 0.4 1.2 0.8 0.4 0.2 0.0 -60 -40 -20 0 20 40 60 80 0.0 100 2 3 4 Temperature (J) 5 6 7 Supply voltage (V) Fig 9. Spectral Response Fig 10. Output Voltage vs. Illuminance EAALSDIC2012A3 Human Eye (Typ.) 10 Vcc = 3V Ta = 25J Output voltage (V) 1 Fluorescent light RL = 5.1 k[ Incandescent lamp RL = 5.1 k[ Fluorescent light RL = 30 k[ Incandescent lamp RL = 30 k[ Fluorescent light RL = 100 k[ Incandescent lamp RL = 100 k[ 0.1 0.01 1E-3 1 10 100 1000 10000 Illuminance (Lux) 6 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Fig.11 Consumption current vs. Illuminance Fig.12 Relative consumption current vs. Temperature Converting Photocurrent to Voltage Vcc Current Amp Iph Vout RL CL GND Note: 1. The output voltage (Vout) is the product of photocurrent (IPH) and loading resistor (RL) 2. A right loading resistor shall be chosen to meet the requirement of maximum ambient light, and output saturation voltage: Vout(max.) = Iout(max.) x RL Vout(saturation)Vcc0.8V 3. To avoid 60Hz ripple from fluorescent lamps, we suggest that the time constant must be greater than 0.5 second: RL x CL 0.5 7 (empirical data) Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Recommended method of storage 1. Do not open moisture proof bag before devices are ready to use. 2. Shelf life in sealed bag from the bag seal date: 18 months at 10C~30C and < 90% RH. 3. After opening the package, the devices must be stored at 10C~30C and 60%RH, and used within 1 year (floor life). 4. If the moisture absorbent material (desiccant material) has faded or unopened bag has exceeded the shelf life or devices (out of bag) have exceeded the floor life, baking treatment is required. 5. If baking is required, refer to IPC/JEDEC J-STD-033 for bake procedure or recommend the following conditions: 192 hours at 40C +5/-0C and < 5 % RH (reeled/tubed/loose units) or 96 hours at 60C 5C and < 5 % RH (reeled/tubed/loose units) or 24 hours at 125C 5C, not suitable for reel or tubes. Recommended Solder Profile Notice: (1) Reflow soldering should not be done more than two times. (2) When soldering, do not put stress on the devices during heating. (3) After soldering, do not warp the circuit board. 8 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Soldering Iron Each terminal is to go to the tip of soldering iron temperature less than 350 for 3 seconds within once in less than the soldering iron capacity 25W. Leave two seconds and more intervals, and do soldering of each terminal. Be careful because the damage of the product is often started at the time of the hand solder. Repairing Repair should not be done after the device have been soldered. When repairing is unavoidable, a double-head soldering iron should be used (as below figure). It should be confirmed beforehand whether the characteristics of the device will or will not be damaged by repairing. 9 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Package Quantity Specification 4000 PCS/ 1 Reel Label Format CPN: Customer's Product Number P/N: Product Number QTY: Packing Quantity CAT: Luminous Intensity Rank HUE: Dom. Wavelength Rank REF: Forward Voltage Rank LOT No: Lot Number MADE IN TAIWAN: Production Place Reel Dimensions Note: Tolerances unless mentioned 0.1mm. Unit = mm 10 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Tape Dimensions Progressive direction Unit: mm Unit: mm Tolerance: 0.1mm 11 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com DATASHEET I2C Digital Ambient Light Sensor - Surface Mount EAALSDIC2012A3 Note: 1. Above specification may be changed without notice. Everlight Americas will reserve authority on material change for above specification. 2. When using this product, please observe the absolute maximum ratings and the instructions for using outlined in these specification sheets. Everlight Americas assumes no responsibility for any damage resulting from use of the product which does not comply with the absolute maximum ratings and the instructions included in these specification sheets. 3. These specification sheets include materials protected under copyright of Everlight Americas Inc. Please don't reproduce or cause anyone to reproduce them without Everlight Americas's consent. 12 Copyright (c) 2010, Everlight Americas Inc. All Rights Reserved. Release Date : 03.10.2014. Issue No: 1 www.everlightamericas.com