7Semi OPT4048 Tristimulus Color Sensor Module

This high-precision tristimulus color sensor module from 7Semi integrates the OPT4048 by Texas Instruments for professional-grade ambient color detection. The sensor outputs calibrated CIE 1931 XYZ tristimulus values, correlated color temperature (CCT), and ambient illuminance (lux), with strong infrared rejection.

Designed for display calibration, ambient light sensing, and color-critical automation systems, this breakout board supports a 3.3V I²C interface and is compatible with microcontrollers like ESP32, Arduino, and STM32. The 4-channel detection provides industry-leading 2.15 mlux resolution and up to 144 klux dynamic range—ideal for accurate color measurement in a variety of lighting environments.

​Features  

• ​High-Precision Color Measurement: Matches CIE 1931 tristimulus spectra for accurate color detection. 

• ​Four Optical Channels: XYZ tristimulus channels plus a clear wide-band channel. 

• ​High-Speed I2C Interface: Supports up to 2.6 MHz for rapid data transfer. 

• ​Wide Dynamic Range: 2.15 mlux to 144 klux with automatic range selection. 

• ​12 Configurable Conversion Times: Ranges from 600 µs to 800 ms per channel. 

• ​Low Power Operation: Active: 24 µA, Standby: 2 µA. 

• ​Interrupt Support: External pin for hardware-triggered measurements. 

Applications 

• Color recognition and classification in robotics, sorting systems, and smart manufacturing

• Ambient light and color sensing for display backlight adjustment or screen brightness control

• Optical color-based detection in smart agriculture, environmental monitoring, or horticulture

• Colorimetric analysis for chemical sensing or portable diagnostic devices

• Object detection, presence sensing, or alignment using reflected color/light measurements

• Educational and prototyping platforms requiring high-accuracy digital color data via I²C

What’s Included

• 1x OPT4048 Sensor Module

Resources

• OPT4048 Datasheet