ISL29120IROZ-T7

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Color sensors are a type of light sensors used to measure color in a particular direction by detecting the wavelength, amplitude, or chrominance values of a source of light. At present, typical color sensors are based on the principles of RGB sensing, refractive angle sensing, and filter sensing. One representative product in this field is ISL29120IROZ-T7.

ISL29120IROZ-T7 Application Field

The ISL29120IROZ-T7 light-to-digital sensor can detect the irradiance of a light source in its sensing range. Its main application fields include mobile phones, tablets, computer peripherials, digital cameras, and notebook computers etc., which require ambient light sensing, backlight dimming, or color sensing. For example, mobile phone displays can dim the backlight according to the ambient light intensity to reduce power consumption, while laptop keyboards can automatically adjust the illumination brightness based on the ambient light to ensure optimal user experience.

Moreover, ISL29120IROZ-T7 can be used in indoor and outdoor lighting applications. It can detect the temperature of indoor and outdoor lighting, control the brightness of auxiliary lighting, adjust the color temperature of office lighting, and switch between different lighting modes according to light conditions. It can also directly control voltage and current on digital drivers and guide the dimming speed for LED lighting.

ISL29120IROZ-T7 Working Principle

The ISL29120IROZ-T7 senses light through one or two light-sensitive filters, NIR (Near Infra-Red) and Clear. It uses a unique Log Sphere dual-sensitivity sensor architecture that achieves better repeatability and accuracy than traditional single-sensitivity sensors. The two sensors sense both NIR and Clear components of an incident light source and then output that data in a digital form.

This sensor also incorporates a programmable auto-correction circuit, which provides reliable data accuracy by automatically correcting gain and offset errors caused by high temperature drift, process variability, and other external factors. In this way, the ISL29120IROZ-T7 is able to deliver accurate and consistent wavelength measurements over a wide range of lighting environments.

Conclusion

The ISL29120IROZ-T7 color sensor is a commonly used light-to-digital sensor that can detect the irradiance of a light source in its sensing range. It is mainly used in mobile phones, tablets, and digital cameras etc., as well as in indoor and outdoor lighting applications. This sensor adopts a unique Log Sphere dual-sensitivity sensor architecture and features an auto-correction circuit, allowing it to produce accurate and consistent colour measurements over a wide range of lighting environments.

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