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
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 single-shot. 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
SMBus-compatible, 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.
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