Avago has announced the launch of a new analog output ambient brightness sensor that can help portable display devices reduce power consumption and extend the life of LCD screens. These economical sensors can control the backlight of the portable LCD display according to the mode preset by the manufacturer. Avago's APDS-9004 provides an ideal power-saving solution for notebook computers, portable DVD players, camcorders, digital cameras and mobile phones. It can also be used to turn on or off indoor and outdoor lighting, street lights, electronic signs and signal lights, etc.
The APDS-9004 sensor can detect the ambient brightness level and adjust the backlight of the display screen or keyboard by providing a highly linear proportional output. If the surrounding light is sufficient, the logic switch provided by the designer can be used to turn off the backlight to reduce the number of times the battery is charged or replaced.
Avago's economical reverse mount brightness sensor provides more flexibility for designers of price and size-sensitive mobile products. The pocket-sized APDS-9004 sensor not only achieves excellent performance, but also significantly reduces power consumption, which is also an increasingly important problem faced by current battery-powered products.
The performance of Avago's ambient brightness sensor is superior to solutions using silicon photodiode brightness detection technology, because the peak of its spectral response is the same as the wavelength of the human eye. These sensors perform equally well under different light sources such as natural sunlight, fluorescence, traditional incandescent lamps and halogen lamps. Their response to changes in lighting is also much faster than that of phototransistors. Avago's packaging technology is specially developed for surface-mounted LEDs, and has the advantages of low cost and high reliability, and meets the needs of automated manufacturing processes with an ultra-small form factor that meets industry standards.
main featureThe APDS-9004 sensor adopts a reverse-mounted 4-pin package, and its package size is also the standard size of the Electronics Industry Association (EIA): 3.2 mm x 1.6 mm x 1.1 mm. When installed, its photosensitive area faces the PC circuit board, and light is transmitted through the aperture provided by the user. In this way, the circuit board can be installed tightly on the rack of the product to save space. The operating voltage of APDS-9004 is 2.4V-5.5V, and the operating temperature range is -40°C to +85°C.
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