TSL26717 查看數據表（PDF） - austriamicrosystems AG

零件编号

产品描述 (功能)

生产厂家

TSL26717

DIGITAL PROXIMITY DETECTOR

austriamicrosystems AG 

r

TSL2671

DIGITAL PROXIMITY DETECTOR

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TAOS118 − JANUARY 2011

Features

D Proximity Detection with an Integrated LED

Driver in a Single Device

PACKAGE FN

DUAL FLAT NO-LEAD

(TOP VIEW)

D Proximity Detection

VDD 1

6 SDA

− Programmable Number of IR Pulses

− Programmable Current Sink for the IR

SCL 2

5 INT

LED — No Limiting Resistor Needed

− Programmable Interrupt Function with

Upper and Lower Threshold

lid − Covers a 2000:1 Dynamic Range

D Programmable Wait Timer

− Programmable from 2.72 ms

a to > 8 Seconds

− Wait State — 65 mA Typical Current

v D I2C Interface Compatible

− Up to 400 kHz (I2C Fast Mode)

ill − Dedicated Interrupt Pin

D Small 2 mm y 2 mm ODFN Package

t D Sleep Mode — 2.5 mA Typical Current

GND 3

4 LDR

Package Image Not Actual Size

Applications

D Cell Phone Touch Screen Disable

D Notebook/Monitor Security

D Automatic Speakerphone Enable

D Automatic Menu Popup

G s Description

A t The TSL2671 family of devices provides a complete proximity detection system and digital interface logic in a

single 6-pin package. The device includes a digital proximity sensor with integrated LED driver for the required

s n external IR LED. The proximity function offers a wide range of performance, with four programmable LED drive

currents and a pulse repetition range of 1 to 32 pulses. The proximity detection circuitry compensates for

e ambient light, allowing it to operate in environments ranging from bright sunlight to dark rooms. This wide

m t dynamic range also allows operation in short-distance detection applications behind dark glass, such as cell

phones. An internal state machine provides the ability to put the device into a low-power mode for very low

a n average power consumption.

o The proximity function specifically targets near-field proximity applications. In cell phones, for example, the

proximity detection function can detect when the user positions the phone close to their ear. The device is fast

c enough to provide proximity information at the high repetition rate needed when answering a phone call. This

provides both improved green power saving capability and the added security to lock the screen when the user

l may accidently deploy a touch.

a Communication with the device is accomplished through a simple two-wire I2C interface with data rates up to

400 kHz. An interrupt output pin is provided for connection to the host processor. This interrupt pin can be used

ic to eliminate the need to poll the device on a repetitive basis. There is also a digital filter that compares the

proximity ADC results to programmed values so that an interrupt is generated only upon a proximity event.

n The TSL2671 is supplied in a very small form factor 2-mm × 2-mm, 6-pin optical package, requiring very little

PCB area. Also, the package height is only 0.65 mm high, which makes the TSL2671 suitable for very thin

Tech mechanical applications.

The LUMENOLOGY r Company

r

Texas Advanced Optoelectronic Solutions Inc.

1001 Klein Road S Suite 300 S Plano, TX 75074 S (972r) 673-0759

www.taosinc.com

Copyright E 2011, TAOS Inc.

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