AS7220-BLGM

Series:	--
Part Status:	Active
Type:	Ambient
Wavelength:	--
Proximity Detection:	No
Output Type:	PWM, SPI
Voltage - Supply:	2.97 V ~ 3.6 V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-BFLGA
Supplier Device Package:	20-LGA (4.5x4.7)

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Optical Sensors - Ambient Light, IR, UV Sensors

The AS7220-BLGM is a kind of optical sensor, and it is classified into the subcategory of Ambient Light, IR, and UV sensors. It is a low-power and small size chip which integrates a high-accuracy ambient light and infrared (IR) sensor plus the logic, timing, and control circuits. It is designed to capture the light intensity of the environment, and it is used to optimize many different types of mobile devices and other electronic equipment.

Applications

The AS7220-BLGM is mainly used in various applications which need to measure the intensity of the ambient light, the infrared light, and the ultraviolet light in a certain environment. It is perfect for any application that needs to measure the position of the sun or any other kind of light source. Common applications include industrial control, environmental lighting and sensing, and energy efficient lighting. In addition, the technology has also been used for educational and laboratory purposes.

Working Principle

The AS7220-BLGM is based upon a CMOS photon detector, LED, photodiodes, and digital logic. In order to measure the intensity of the light in a certain environment, the chip first converts the light into an electrical signal using its photodetector and then processes that signal with the help of its digital logic components. Upon receiving the electrical signal, the chip then determines the intensity of the light with the help of its two comparators.The chip has two types of output: an analog output, which is the raw electrical signal that was converted from the light, and a digital output, which is the actual measurement result of the intensity of the light. Furthermore, the chip also allows its operating parameters to be set according to the applications such as the integration time, the detection gain, the window size (the measurement range), and the resolution.

Conclusion

The AS7220-BLGM is a very useful optical sensor for measuring the intensity of the ambient light, the infrared light, and the ultraviolet light in a certain environment. It features a small size, low power consumption, and high accuracy. Furthermore, its adjustable parameters can be set according to various applications, making it an ideal choice for many different types of projects.

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