TMD27722 Datasheet, PDF (2/35 Pages) ams AG – DIGITAL ALS and PROXIMITY MODULE

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TMD2772
DIGITAL ALS
and PROXIMITY MODULE
TAOS147E − DECEMBER 2012
Features
D Ambient Light Sensing, Proximity
PACKAGE
MODULE−8
(TOP VIEW)
Detection, and IR LED in a Single Module
D Register Set- and Pin-Compatible with the
V_DD 1
8 SDA
TMD2771 Series
SCL 2
7 INT
D Ambient Light Sensing (ALS)
− Approximates Human Eye Response
− Programmable Analog Gain and
Integration Time
lid ^{− 8,000,000:1 Dynamic Range}
− Very High Sensitivity — Ideally Suited for
Operation Behind Dark Glass
a D Proximity Detection
− Reduced Proximity Count Variation *
v _{− Programmable Offset *}
− Saturation Indicator *
ill ^{− Current Sink Driver for IR LED}
− 16,000:1 Dynamic Range
t D Maskable ALS and Proximity Interrupt
− Programmable Upper and Lower
G _{s Thresholds with Persistence Filter}
D Power Management
A t − Low Power 2.2 mA Sleep State with User-
Selectable Sleep-After-Interrupt Mode
s n − 90 mA Wait State with Programmable Wait
Time from 2.7 ms to > 8 seconds
m te D I2C Fast Mode Compatible Interface
− Data Rates up to 400 kbit/s
a ^{n − Input Voltage Levels Compatible with VDD}
or 1.8-V Bus
o _{D 3.94 mm y 2.36 mm y 1.35 mm Package}
c _{* New or improved feature}
GND 3
6 LDR
LEDA 4
5 LEDK
Package Drawing is Not to Scale
Applications
D Display Backlight Control
D Cell Phone Touch Screen Disable
D Mechanical Switch Replacement
D Industrial Process Control
D Medical Diagnostics
D Printer Paper Alignment
End Products and Market Segments
D Mobile Handsets, Tablets, Laptops, HDTVs,
Monitors, and PMP (Portable Media
Players)
D Medical and Industrial Instrumentation
D White Goods
D Toys
D Industrial/Commercial Lighting
D Digital Signage
D Printers
l _Description
a _{The TMD2772 family of devices provides digital ambient light sensing (ALS), a complete proximity detection}
ic ^{system, and digital interface logic in a single 8-pin surface mount module. The devices are register-set and}
pin-compatible with the TMD2771 family of devices and include new and improved ALS and proximity detection
features. The ALS enhancements include a reduced-gain mode that extends the operating range in sunlight.
n _{Proximity detection includes improved signal-to-noise performance and more accurate factory calibration. A}
proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor.
h _{To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the}
internal analog circuitry has reached saturation.
c _{The TMD2772 ALS is based on the TAOS patented dual-diode technology that enables accurate results and}
eapproximates human eye response to light intensity under a variety of lighting conditions. The proximity
detection system includes an LED driver and an IR LED, which are factory trimmed to eliminate the need for
Tend-equipment calibration due to component variations.
The LUMENOLOGY r Company
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Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972_r) 673-0759
www.taosinc.com
Copyright E 2012, TAOS Inc.
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