TSL2672 데이터 시트보기 (PDF) - austriamicrosystems AG

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TSL2672

DIGITAL PROXIMITY DETECTOR

austriamicrosystems AG 

r

TSL2672

DIGITAL PROXIMITY DETECTOR

r

TAOS133 − MAY 2012

Features

D Proximity Detection with an Integrated LED

PACKAGE FN

DUAL FLAT NO-LEAD

(TOP VIEW)

Driver in a Single Device

D Register Set- and Pin-Compatible with the

TSL2x71 Series

VDD 1

6 SDA

SCL 2

5 INT

D Proximity Detection

− Reduced Proximity Count Variation

− Programmable Offset Control Register

− Saturation Indicator

lid − Programmable Analog Gain and

Integration Time

− Current Sink Driver for External IR LED

a − 16,000:1 Dynamic Range

D Maskable Proximity Interrupt

v − Programmable Upper and Lower

Thresholds with Persistence Filter

ill D Power Management

− Low Power 2.2 mA Sleep State with User-

t Selectable Sleep-After-Interrupt Mode

− 90 mA Wait State with Programmable Wait

G s Time from 2.7 ms to > 8 seconds

D I2C Fast Mode Compatible Interface

A t − Data Rates up to 400 kbit/s

− Input Voltage Levels Compatible with VDD

s n or 1.8-V Bus

e D Small 2 mm y 2 mm Dual Flat No-Lead (FN)

Package

GND 3

4 LDR

Not Actual Size

Applications

D Mobile Handset Touchscreen Control and

Automatic Speakerphone Enable

D Mechanical Switch Replacement

D Printer Paper Alignment

End Products and Market Segments

D Mobile Handsets, Tablets, Laptops, and

HDTVs

D White Goods

D Toys

D Digital Signage

D Printers

am nt Description

o The TSL2672 family of devices provides proximity detection when coupled with an external IR LED. The devices

incorporate a constant-current LED sink driver to pulse the external IR LED and achieve very low average power

c consumption using the low-power wait state with programmable wait time between proximity measurements.

In addition, the devices are register-set and pin-compatible with the TSL2671 series and include a number of

l new and improved features, such as improved signal-to-noise and measurement accuracy. A proximity offset

register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false

a measurements, a proximity saturation bit indicates that the internal analog circuitry saturated. Interrupts have

Technic been enhanced with the addition of a sleep-after-interrupt feature that also allows for single-cycle operation.

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 2012, TAOS Inc.

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