Analog ambient light sensor chip applied in backlight display of electronic products

The ambient light sensor chip can sense the surrounding light and tell the processing chip to automatically adjust the backlight brightness of the display to reduce the power consumption of the product. On the other hand, the ambient light sensor chip helps the display provide a soft picture. When the ambient brightness is high, the LCD display using the ambient light sensor chip will automatically adjust to high brightness. When the external environment is dark, the display will be adjusted to low brightness.
Analog ambient light sensor chip applied in backlight display of electronic products
The ambient light sensor chip has the characteristics of low dark current, low illumination response, high sensitivity, and linear change of current with the increase of illumination; Built-in dual-sensitive elements, automatically attenuate near-infrared, and spectral response is close to the human eye function curve; Built-in micro-signal CMOS amplifier, high-precision voltage source and correction circuit, large output current, wide working voltage range and good temperature stability. Optional optical nano-material packaging, visible light transmission, ultraviolet cut-off, near-infrared relative attenuation, enhanced optical filtering effect.
In the middle and low end visible light sensor, the comprehensive performance of photosensitive triode is generally better than that of photosensitive resistor. Under the influence of performance, application range and other factors, photosensitive triode will gradually replace photosensitive resistor with good comprehensive performance.
The high-end visible light sensor, represented by CMOS linear visible light sensor, has a wide range of backlight adjustment and energy-saving control markets due to its low dark current, high sensitivity, low illumination response, and linear change of current with the increase of illumination. It is widely used in TV sets, computer monitors, LED backlight, smart phones, digital cameras and other products, and is one of the important development directions of visible light sensors in the future.
Analog ambient light sensor chip applied in backlight display of electronic products
Here, the editor recommends to you an analog ambient light sensor chip of Taiwan Wanghong, which is represented by Industrial Mining Network. The ambient light sensor chip – ALS – AK510 is a low-cost visible light sensor with a current output proportional to the ambient light level. It has a built-in optical filter to provide a response or “light sensitivity” close to the human eye. The output current can be converted into voltage by connecting it in series with a resistor. The dynamic range is determined by external resistance and power supply (10K and 5V give a range of 0 to 160 Lux, but 1K resistance can exceed 700 Lux). The internal dark current elimination circuit can maintain stable accuracy in the full temperature range, even at low light level.https://www.stoneitech.com/
Characteristics of ambient light sensor chip – ALS – AK510:
Photosensitivity close to human eyes
High infrared suppression with built-in optical filter
Current output height linearity and ambient light level
Temperature stability
Corresponding relationship integration of optical current amplifier
Excellent dark current performance
High humidity immunity
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