TSL2561 datasheet(2/37 Pages) OSRAM

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ams Datasheet

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[v1-01] 2018-Apr-23

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TSL2561

Light-to-Digital Converter

The TSL2561 are light-to-digital converters that transform light

intensity to a digital signal output capable of direct I²C

interface. Each device combines 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 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

TSL2561 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 TSL2561 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.

Ordering Information and Content Guide appear at end of

datasheet.

General Description

TSL2561 データシート(PDF) 2 Page - OSRAM GmbH

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