Ambient light sensor measures intensity of visible light

This post sponsored by Texas Instruments.

The OPT3001 sensor accurately measures the intensity of light visible to the human eye regardless of light source.

Its precision spectral response tightly matches the photopic response of the human eye and includes significant infrared rejection. The OPT3001, a single-chip lux meter, also uses its strong IR rejection to aid in maintaining high accuracy when industrial design calls for mounting the sensor under dark glass for aesthetics.

It is designed for systems that create light-based experiences for humans, and it’s an ideal preferred replacement for photodiodes, photoresistors, or other ambient light sensors with less human-eye matching and IR rejection. By using the OPT3001’s full-scale setting feature, measurements can be made from 0.01 lux to 83k lux without manually selecting full-scale ranges. 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. Digital output is reported over an I2C- and SMBus-compatible, two-wire serial interface.

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By: Rachel Kalina, Hearst Business Media