Lowest power RGB digital light sensor optimizes display viewing experience - Embedded.com

Lowest power RGB digital light sensor optimizes display viewing experience

The ISL29125 digital light sensor from Intersil Corporation is touted as the industry's most accurate, lowest power and smallest RGB sensor. The sensor optimizes the display resolution and color quality of mobile devices and TVs in all lighting environments. The sensor communicates directly with a device's core processor to enable the automatic adjustment of display brightness based on changing light conditions, providing consumers with a more crisp and color consistent experience while extending battery life. The compact ISL29125 is also the industry's smallest 6-lead RGB sensor, which minimizes the real estate requirements of the optical sensor aperture, leading to improved industrial device designs.

With integrated, robust on-chip IR filtering technology and market-leading angular response of a minimum of +/- 35% field of view at 50% light intensity, the ISL29125 RGB sensor eliminates display fluctuations, whether one is in an incandescent lit classroom, an LED lit store or outdoors in the sun. The ISL29125 works directly with the device's core processor to continuously adjust the lux range and ensure that the display maintains consistent perceived color and the ideal brightness level based on the current lighting environment.

The ISL29125 works similarly when integrated into a TV display, effectively adjusting the brightness and color consistency of the display as the lighting conditions in a room changes. Specifically, in organic light-emitting diode (OLED) display TV applications, the ISL29125 can be used to adjust the blue organic material ageing profile to maintain consistent contrast and brightness throughout the life of the display. The ISL29125 is the lowest power RGB sensor in the market with a standard I2C interface and an operating voltage range of 2.25V to 3.63V. The ISL29125 also offers a wide dynamic range of 5.7m lux to 10k lux detection capabilities, which allows the display brightness to adjust in low- to high-lit environments, preventing unnecessary power consumption to prolong battery life. The RGB sensor's unique lux range select feature enables designers to program the lux range for optimized counts/lux based on the device's requirements. In power down mode, the RGB sensor consumes less than 0.5uA of current and on active mode it runs at approximately 85uA.

More information
ISL29125IROZ-EVAL evaluation board 

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