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TMD2771

Texas Advanced Optoelectronic Solutions
Part Number TMD2771
Manufacturer Texas Advanced Optoelectronic Solutions
Description DIGITAL ALS/PROXIMITY
Published Jan 9, 2012
Detailed Description www.DataSheet.co.kr r r TMD2771 DIGITAL ALS and PROXIMITY MODULE TAOS143 − APRIL 2011 Features D Ambient Light Sensin...
Datasheet PDF File TMD2771 PDF File

TMD2771
TMD2771

Overview
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kr r r TMD2771 DIGITAL ALS and PROXIMITY MODULE TAOS143 − APRIL 2011 Features D Ambient Light Sensing, Proximity Detection, and IR LED in a Single Optical Module VDD 1 SCL 2 GND 3 LEDA 4 PACKAGE MODULE−8 (TOP VIEW) 8 SDA 7 INT 6 LDR 5 LEDK D Ambient Light Sensing (ALS) − − − − Approximates Human Eye Response Programmable Analog Gain Programmable Integration Time Programmable Interrupt Function with Upper and Lower Threshold − Up to 16 Bits Resolution − Very High Sensitivity — Operates Behind Darkened Glass − Up to 1,000,000:1 Dynamic Range Package Drawing is Not to Scale D I2C Interface Compatible D D D D Proximity Detection − − − − Calibrated to 100-mm Detection Eliminates Factory Calibration of Prox Programmable Number of IR Pulses Programmable Current Sink for the IR LED — No Limiting Resistor Needed − Programmable Interrupt Function with Upper and Lower Threshold − Up to 400 kHz (I2C Fast Mode) Dedicated Interrupt Pin 3.
94 mm y 2.
4 mm y 1.
35 mm Package Sleep Mode — 2.
5 mA Typical Applications D D D D D Cell Phone Backlight Dimming Cell Phone Touch Screen Disable Notebook/Monitor Security Automatic Speakerphone Enable Automatic Menu Popup D Programmable Wait Timer − Wait State — 65 mA Typical Current − Programmable from 2.
72 ms to > 8 Seconds Description The TMD2771 family of devices provides digital ambient light sensing (ALS), a complete proximity detection system, and digital interface logic in a single 8-pin package.
The proximity detector includes a digital proximity sensor, LED driver, and IR LED, which are trimmed to eliminate the need for end-equipment calibration due to component variations.
Excellent background light rejection allows the device to operate in environments from sunlight to dark rooms.
The wide dynamic range allows for operation in short distance detection such as a cell phone (behind dark glass).
An internal state machine provides the ability to put the device into a low-power mode in between ALS and proximi...


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