义隆光感 ePL8882

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义隆 双方向光感IC ePL8882 集成PS&ALS&GS
LAN Specification Revision History LAN Description ALS and Ps with built in IR LED in a Single Chip High Proximity sensitivity: Proximity detectable distance ranges from 0 to approximately 30 centimeters, as set by the IR LED light intensity and the programmable threshold Minimum lux resolution :0.01 Lux/Count Large dynamic range: Ambient Light sensor measures 100, 000 Lux With built in IR LEd and one independent lEd driver 2D Gesture Recognition Distance: 20-150 mm typical in indoor ambient light condition up to 3000 LUx Digital control and data output via I C(100 KHz and 400 KHz) interface Programmable analog gain and integration time for Als and Ps 60 Hz compensation by averaging: Programmable averaging of the ALS measurement (average sample number: 1/2/478/16/32/64/128) Interrupt pin supports active low microprocessor Interrupt bus for Ps event, programmed by the"high”and“low" thresholds Interrupt pin can also be programmed as a digital binary output pin Sensor works as a proximity(contact less)switch in stand alone mode without I c bus wires to a master Core VDD: 2.4 to 3.6 V Active Vop Pin Current 320uA Average current at 3.0V, based on power saving mode Ambient sensing mode: 30uA typical Proximity sensing mode: 30uA typical (w/o IR LED power) LAN Idle current: 1uA typica Applications Ambient Light Sensor Smartphones(LCD and key pads backlight power saving Notebook computers(LCd back light power saving Automotive GPS screen back light switching from bright backlight to dark backlight(and vise versa)to improve driver's viewing comfort (ex: when going into and exiting from a tunnel) Tablet PC, Digital Still Camera, Digital Video Recorder, or other Mid(mobile Internet devices) LED TV: Automatically adjust the backlight for energy efficient and better users' viewing experlence Car electronics and safety devices Consumer electronics and appliances Kiosk, ATM, and vending machines Contact less switches Lighting and air conditioning power saving for homes, offices, commercial buildings, etc Proximity Sensor Smartphones(Turn off LCD backlight and touch panel sensor when the phone is held next to the users ear) Notebook PC or PC Monitor Automatically turn off the screen backlight and to freeze the computer when the user leaves the space in front of a PC and NB for power saving and enhanced security Lighting: Automatically adjust the room lighting power to the ambient light level and presence of people(by proximity for energy saving Smoke detector and chemical detector Touch free switches(2 to 15 cm detectable range LAN Figure 1. ePL8882 Sensor Physical Appearance LAN Block diagram Figure 2. e PL8882 Functional Block Diagram Pin out 1234 4321 5678 TOP VIEW BOTTOM VIEW Figure 3. ePL8882 DFN Pin Assignment LAN ePL8882 Pin Descriptions Assign Pin 6 as floating if the pin is not used Application Circuit The suggested RvDp is 22Q if the VLED is connected with the VoD (a)ePL8882 Basic Application The suggested Ryop is 222 if the VLED is connected with the VDD (b)ePL8882 Application with one IR LED Figure 4. ePL8882 Application Circuit Diagram LAN ePl8882 BOM List Basic Application Q Q Application with one IR LED Q Q Ordering e PL8882 Chip Information Absolute Maximum Ratings Note All voltages are with respect to GND LAN Recommended Operating Conditions Electrical and optical characteristics Note1: Measures using white LED light source and cover lens with 15% transmittance at 550 nm Note2: IR LEd wavelength is 850nm Note3: Measures using white LEd light source and cover lens with 80% transmittance at 850nm, 15% transmittance at 550 nm

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