TSL2580FN datasheet(2/53 Pages) OSRAM

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ams Datasheet

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[v1-00] 2016-Apr-05

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TSL2580, TSL2581

Light-to-Digital Converter

The TSL2580 and TSL2581 are very-high sensitivity

light-to-digital converters that transform light intensity to a

digital signal output capable of direct I²C (TSL2581) or SMBus

(TSL2580) 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 16-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

TSL2580 device permits an SMB-Alert style interrupt, and the

TSL2581 device supports a traditional level style interrupt that

remains asserted until the firmware clears it.

While useful for general purpose light sensing applications, the

TSL2580/81 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 TSL2580/81 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

TSL2580FN 데이터시트(PDF) 2 Page - OSRAM GmbH