SparkFun Mini Tristimulus Color Sensor - OPT4048DTSR (Qwiic)

The OPT4048 High-Speed High Precision Tristimulus XYZ Colour Sensor from Texas Instruments serves as the foundation for the SparkFun Qwiic Mini Tristimulus Colour Sensor. This Mini Sensor has a high-resolution colour single-chip sensor that can measure four different channels, each having a unique designed spectral response. This tiny breakout board is just 0.5 inches by 1 inch and features two I2C Qwiic connectors to facilitate a more straightforward interface with the OPT4048. Since it's a component of SparkFun's Qwiic connect system, figuring out how things are oriented won't require any soldering. If you would rather utilise a breadboard, we still have broken out 0.1"-spaced pins available.

The CIE tristimulus spectra are closely matched by three of the OPT4048DTSR's four channels, while the fourth channel has a wide-band spectral response. Essential lighting environment parameters, such as (i) light intensity (lux), (ii) colour in CIE XY, LUV coordinates, and (iii) Correlated Colour Temperature, can be derived with observations from these channels. This helps with applications such as display brightness, colour temperature control, camera colour temperature correction, object true colour detection, and medical applications where precise lighting environment measurements are crucial.

• I2C Interface (Qwiic-enabled)

  • Selectable I2C Address: 0x44 (default), 0x45, 0x46
  • 2x Horizontal Qwiic Connectors
• Mini 0.5in. x 1in. Footprint
• Supply Voltage Range: 1.71-3.6V
• Four-channel sensing using precision optical filters
• XYZ tristimulus channels with close matching to CIE 1931 spectra with excellent IR rejection
• Clear wide bandwidth channel
• High-resolution color measurement in CIE XY, LUV space, correlated color temperature (CCT) along with ambient lux measurement
• Semi-logarithmic output with seven binary logarithmic full-scale light ranges and highly linear response within each range
• Built-in automatic full-scale light range selection logic, which switches measurement range based on input light condition with excellent gain matching between ranges
• 26 bits of effective dynamic range from 2.15mlux to 144klux
• 12 configurable conversion times from 600µs to 800ms per channel is an excellent choice for a wide variety of high-speed and high-precision applications
• External pin interrupt for hardware synchronized trigger and interrupts
• 24uA (with ultra-low power standby (2uA)) low operating current
• –40C to +85C operating temperature range

• Schematic
• Eagle Files
• Board Dimensions
• Hookup Guide
• Datasheet (OPT4048)
• Arduino Library
• Qwiic Info Page
• GitHub Hardware Repository