TSL2672

DIGITAL PROXIMITY DETECTOR

TAOS133 − MAY 2012

1

The LUMENOLOGY

r Company

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Copyright

E 2012, TAOS Inc.

www.taosinc.com

Features

Driver in a Single Device

TSL2x71 Series

− Reduced Proximity Count Variation

− Programmable Offset Control Register

− Saturation Indicator

− Programmable Analog Gain and

Integration Time

− Current Sink Driver for External IR LED

− 16,000:1 Dynamic Range

− Programmable Upper and Lower

Thresholds with Persistence Filter

− Low Power 2.2

mA Sleep State with User-

Selectable Sleep-After-Interrupt Mode

− 90

mA Wait State with Programmable Wait

Time from 2.7 ms to > 8 seconds

− Data Rates up to 400 kbit/s

or 1.8-V Bus

Package

Applications

Automatic Speakerphone Enable

End Products and Market Segments

HDTVs

Description

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

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

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

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

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

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Texas Advanced Optoelectronic Solutions Inc.

1001 Klein Road

S Suite 300 S Plano, TX 75074 S (972) 673-0759

PACKAGE FN

DUAL FLAT NO-LEAD

(TOP VIEW)

SCL 2

GND 3

6 SDA

5 INT

4 LDR

Not Actual Size