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1 Features

1? Precision Optical Filtering to Match Human Eye:

– Rejects > 99% (typ) of IR

? Automatic Full-Scale Setting Feature Simplifies

Software and Ensures Proper Configuration

? Measurements: 0.01 lux to 83 k lux

? 23-Bit Effective Dynamic Range With

Automatic Gain Ranging

? 12 Binary-Weighted Full-Scale Range Settings:

< 0.2% (typ) Matching Between Ranges

? Low Operating Current: 1.8 μA (typ)

? Operating Temperature Range: –40°C to +85°C

? Wide Power-Supply Range: 1.6 V to 3.6 V

? 5.5-V Tolerant I/O

? Flexible Interrupt System

? Small-Form Factor: 2.0 mm × 2.0 mm × 0.65 mm

2 Applications

? Display Backlight Controls

? Lighting Control Systems

? Tablet and Notebook Computers

? Thermostats and Home Automation Appliances

? Point-of-Sale Terminals

? Outdoor Traffic and Street Lights

? Cameras

3 Description

The OPT3001 is a sensor that measures the intensity

of visible light. The spectral response of the sensor

tightly matches the photopic response of the human

eye and includes significant infrared rejection.

The OPT3001 is a single-chip lux meter, measuring

the intensity of light as visible by the human eye. The

precision spectral response and strong IR rejection of

the device enables the OPT3001 to accurately meter

the intensity of light as seen by the human eye

regardless of light source. The strong IR rejection

also aids in maintaining high accuracy when industrial

design calls for mounting the sensor under dark glass

for aesthetics. The OPT3001 is designed for systems

that create light-based experiences for humans, and

an ideal preferred replacement for photodiodes,

photoresistors, or other ambient light sensors with

less human eye matching and IR rejection.

Measurements can be made from 0.01 lux up to

83k lux without manually selecting full-scale ranges

by using the built-in, full-scale setting feature. This

capability allows light measurement over a 23-bit

effective dynamic range.

The digital operation is flexible for system integration.

Measurements can be either continuous or singleshot.

The control and interrupt system features

autonomous operation, allowing the processor to

sleep while the sensor searches for appropriate

wake-up events to report via the interrupt pin. The

digital output is reported over an I2C- and SMBuscompatible,

two-wire serial interface.

The low power consumption and low power-supply

voltage capability of the OPT3001 enhance the

battery life of battery-powered systems.