AS7221-BLGT Sensors, Transducers |
|
| Allicdata Part #: | AS7221-BLGTTR-ND |
| Manufacturer Part#: |
AS7221-BLGT |
| Price: | $ 3.37 |
| Product Category: | Sensors, Transducers |
| Manufacturer: | ams |
| Short Description: | DIGITAL AMBIENT LIGHT SENSOR LGA |
| More Detail: | Optical Sensor Ambient PWM, SPI® 20-BFLGA |
| DataSheet: |  AS7221-BLGT Datasheet/PDF |
| Quantity: | 1000 |
| 2000 +: | $ 3.06709 |
Specifications
| Series: | -- |
| Packaging: | Tape & Reel (TR) |
| Part Status: | Active |
| Type: | Ambient |
| Wavelength: | -- |
| Proximity Detection: | No |
| Output Type: | PWM, SPI® |
| Voltage - Supply: | 3V, 15V |
| Operating Temperature: | 0°C ~ 85°C |
| Mounting Type: | Surface Mount |
| Package / Case: | 20-BFLGA |
| Supplier Device Package: | 20-LGA (4.5x4.7) |
Description
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Optical sensors detect and convert light into current or voltage to generate a signal for a specific application. From ambient light sensors (ALS) to infrared (IR) and ultraviolet (UV) sensors, each has its own unique features and application benefits. One particular optical sensor, the AS7221-BLGT, is used specifically for ambient light and Proximity sensing applications. This article will discuss the application field and working principle of the AS7221-BLGT sensor.The AS7221-BLGT is an ambient light and IR Proximity sensor from ams. It is used for sensing the brightness of ambient light in an environment, ranging from 0.01 lux to 800 lux, and for Proximity measurements in the IR range from 10 cm to 70 cm. The AS7221-BLGT combines a low-power comparator and an IR sensing diode, making it capable of converting light or Proximity data into digital output signals.The AS7221-BLGT is designed for applications that require two, independent, optical sensing tasks, such as a smartphone\'s ambient light sensor and Proximity sensor. It features two, independent, digitally programmable measurements: photometry, which is the measurement of ambient light, and Proximity, which is the measurement of IR distances. The AS7221-BLGT features a built-in LED controller, allowing the device to be used in both ambient light and Proximity sensing applications.To understand the working principle of the AS7221-BLGT, it is important to first understand the two measurements it is capable of. Photometry works by measuring the intensity of ambient light, while Proximity works by detecting the amount of IR light reflected by an object when it is exposed to an IR signal. The AS7221-BLGT makes use of an IR photodiode, which detects the incoming light and converts it into a current. This current is then processed and converted into a digital output signal. The device can then process this signal to determine the intensity of light and/or the distance of an object. The device also features a low-power comparator, allowing it to detect very small changes in light intensity. This makes the device ideal for applications such as display backlighting and ambient light sensing. Furthermore, it can be used for Proximity detection of both opaque and transparent objects.The AS7221-BLGT is ideal for ambient light and Proximity sensing applications, such as smartphones, consumer electronic devices, and industrial equipment. It is designed to provide both reliable and accurate measurements, reducing power consumption while providing stable operation over a wide range of environments. In addition, the device is highly programmable, allowing it to be tailored to a wide variety of applications.In conclusion, the AS7221-BLGT is an ideal solution for ambient light and Proximity sensing applications. It can measure accurately and detect small changes in light intensity, making it ideal for applications such as display backlighting and Proximity detection. Its low-power design and programmable features make it an ideal choice for many applications.
The specific data is subject to PDF, and the above content is for reference
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