TSL2560, TSL2561

LIGHT-TO-DIGITAL CONVERTER

TAOS059Q − NOVEMBER 2009

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The LUMENOLOGY

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Copyright

E 2009, TAOS Inc.

www.taosinc.com

User-Defined Upper and Lower Threshold

Settings

400 kHz

Time Supporting 1,000,000-to-1 Dynamic

Range

Ripple

Power Down Mode

Description

The TSL2560 and TSL2561 are light-to-digital

converters that transform light intensity to a digital

SMBus (TSL2560) interface. Each device com-

bines one broadband photodiode (visible plus

infrared) and one infrared-responding photodiode

on a single CMOS integrated circuit capable of

providing a near-photopic response over an

effective 20-bit dynamic range (16-bit resolution).

Two integrating ADCs convert the photodiode

currents to a digital output that represents the

irradiance measured on each channel. This digital

output can be input to a microprocessor where

illuminance (ambient light level) in lux is derived

using an empirical formula to approximate the

human eye response. The TSL2560 device

permits an SMB-Alert style interrupt, and the

TSL2561 device supports a traditional level style

interrupt that remains asserted until the firmware

clears it.

While useful for general purpose light sensing applications, the TSL2560/61 devices are designed particularly

for display panels (LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing

in diverse lighting conditions. Display panel backlighting, which can account for up to 30 to 40 percent of total

platform power, can be automatically managed. Both devices are also ideal for controlling keyboard illumination

based upon ambient lighting conditions. Illuminance information can further be used to manage exposure

control in digital cameras. The TSL2560/61 devices are ideal in notebook/tablet PCs, LCD monitors, flat-panel

televisions, cell phones, and digital cameras. In addition, other applications include street light control, security

lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters.

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Texas Advanced Optoelectronic Solutions Inc.

1001 Klein Road

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

6 SDA

5 INT

4 SCL

PACKAGE T

6-LEAD TMB

(TOP VIEW)

ADDR SEL 2

GND 3

PACKAGE CS

6-LEAD CHIPSCALE

(TOP VIEW)

ADDR SEL 2

GND 3

6 SDA

5 INT

4 SCL

Package Drawings are Not to Scale

PACKAGE FN

DUAL FLAT NO-LEAD

(TOP VIEW)

6 SDA

5 INT

4 SCL

ADDR SEL 2

GND 3

PACKAGE CL

6-LEAD ChipLED

(TOP VIEW)

4 SCL

3 ADDR SEL

2 GND

SDA 5

INT 6