TMD26723 Datasheet, PDF (2/29 Pages) ams AG – DIGITAL PROXIMITY DETECTOR

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TMD2672
DIGITAL PROXIMITY DETECTOR
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TAOS149C − AUGUST 2012
Features
D Digital Proximity Detector, LED Driver, and
PACKAGE
MODULE−8
(TOP VIEW)
IR LED in a Single Optical Module
D Register Set- and Pin-Compatible with the
V_DD 1
8 SDA
TMD2671 Series
SCL 2
7 INT
D Proximity Detection
− Reduced Proximity Count Variation *
− Programmable Offset Control Register *
− Saturation Indicator *
lid ^{− Programmable Integration Time and Offset}
− Current Sink Driver for IR LED
− 16,000:1 Dynamic Range
a D Maskable Proximity Interrupt
− Programmable Upper and Lower
v _{Thresholds with Persistence Filter}
ill D Power Management
− Low Power 2.2 mA Sleep State with User-
Selectable Sleep-After-Interrupt Mode *
t ^{− 90 mA Wait State with Programmable Wait}
Time from 2.7 ms to > 8 seconds
G s D I2C Fast Mode Compatible Interface
− Data Rates up to 400 kbit/s
A ^t − Input Voltage Levels Compatible with V_DD
or 1.8-V Bus
s ^{n D 3.94 mm y 2.36 mm y 1.35 mm Package}
m ^te _{* New or improved feature}
GND 3
LEDA 4
6 LDR
5 LEDK
Package Drawing is Not to Scale
Applications
D Mobile Handset Touchscreen Control and
Automatic Speakerphone Enable
D Mechanical Switch Replacement
D Paper Alignment
End Products and Market Segments
D Mobile Handsets, Tablets, Laptops and
HDTVs
D White Goods
D Toys
D Digital Signage
D Printing
a _{on Description}
c The TMD2672 family of devices provides a complete proximity detection system and digital interface logic in
a single 8-pin surface mount module. The devices are register-set and pin-compatible with the TMD2671 series
l _{and includes new and improved proximity detection features. The proximity detection includes improved}
signal-to-noise and accuracy. A proximity offset register allows compensation for optical system crosstalk
a _{between the IR LED and the sensor. To prevent false proximity data measurement readings, a proximity}
saturation indicator bit signals that the internal analog circuitry has reached saturation. Interrupts have been
ic ^{enhanced with the addition of a sleep-on-interrupt feature that also allows for a single cycle operation. The}
device internal state machine provides the ability to put the device in a low-power mode in between proximity
measurements, providing very low average power consumption.
n _{The proximity detection system includes an LED driver and an IR LED, which are factory trimmed to eliminate}
Tech ^{the need for end-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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