TSL2521 datasheet(2/81 Pages) OSRAM

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Datasheet, Public

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[v3-00] 2022-Dec-21

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TSL2521

Highly Sensitive Ambient Light Sensor

with Selective Flicker Detection and

Fast Sampling for Brightness Control

or Auxiliary to Camera

The TSL2521 features ambient light sensing, as well as flicker

detection. The device comes in a low-profile and small

footprint, L2.0mm x W1.0mm x H0.5mm OLGA package.

The Ambient Light Sensing function provides two concurrent

ambient light sensing channels, which can be arbitrarily

connected to the photodiodes via a programmable multiplexer.

TSL2521 incorporates a set of Infrared photodiodes and a set of

Clear photodiodes. The Clear photodiode area is covered with

a UV/IR blocking filter.

This architecture accurately measures ambient light and

enables the calculation of irradiance of different light sources.

Calculation results help to improve display appearance and

picture taking.

The device also integrates ambient light flicker detection. It is

executed in parallel with ambient light sensing by using the

same photodiodes. The flicker detection engine will sample and

buffer data for calculating flicker frequencies externally on a

host CPU.

Ordering Information and Content Guide appear at end of

datasheet.

Key Benefits & Features

The benefits and features of TSL2521 are listed below:

Figure 1:

Added Value of Using TSL2521

Benefits

Features

• Invisible ALS sensing under any glass type

• Configurable, high sensitivity

• Programmable gain and integration time

• 4096x dynamic range by gain adjustment only

• 1mlux detectable illuminance

• Tailored ALS response

• UV/IR blocking filter for Clear channel

• ALS interrupt with thresholds

• Unique fast ALS integration mode

• Flicker-immune ALS sensing with programmable

integration time

General Description

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