RGBW Light

Experience the true colors beyond the spectrum.

🛆 RGBW Chip

A light sensor uses photodiodes to detect light intensity levels in the three respective light bands (Red, Blue and Green).

The VEML6040 chip from VISHAY achieves the closest ambient light spectral sensitivity to real human eye responses. This makes it an excellent sensor for retranscribing the light spectrum we perceive. In addition, the sensor outputs a value for ambient light illumination (lux) and color temperature of backlight. It's a complete low-power light detector.

VEML6040 from VISHAY

Technological Capabilities

Characteristic	Description
Package	OPLGA | 2x1.25x1mm
Technology	Filtron - providing a spectrum matching real human eye responses
Peak Sensitivity	650, 550, 450 (R, G, B)
Range of spectral bandwidth λ(0.5)(nm)	±35, ±35, ±40 (R, G, B)
Selectable detection range lux	515.4, 1031, 2062, 4124, 8248, or 16 496
Resolution	16-bit data output
Speed Mode	Up to 400kHz
Operating Temperature	-40°C ti +85°C
Current consumption	In Run mode : ~200 µA In Stop mode : ~800 nA

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🛆 Hardware Integration

Integration is straightforward. The light sensor only requires a decoupling capacitor of 100nF (see page 6 of the datasheet).

Pin Number	Symbol	Description
1	GND	Connected to GND
2	SDA	I2C data bus Data Input & Output
3	SCL	I2C digital bus Serial Clock Input
4	VDD	Power supply input

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🛆 Documentation

VEML6040 Optical Sensors | Vishaywww.vishay.com

Web Site | VEML6040

391KB

SensorRBGLight_VEML6040.pdf

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Datasheet | VEML6040