BH1721FVC-TR Sensors, Transducers

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Optical sensors measure light intensity by providing a discrete digital or analog output for vector measurements. Accurate and unidirectional measurements are required for a variety of applications, like scientific projects, digital billboard and data acquisition.

The BH1721FVC-TR is a digital ambient light and IR sensor developed by ROHM Semiconductor using a built-in ambient light and IR sensors. It is capable of sensing flux density levels with current consumption of only 1.3 uA and supply voltage of 2.3V to 3.6V. The BH1721FVC-TR has a range of detection from 0.1 lx to 128 K lx with a resolution of 0.45 lx.

The BH1721FVC-TR has an output of light by 16bit resolution digital signals, and provides digital output of USB, serial and I2C. It integrates IR cut filter of visible light and infrared light, and also complies with the lighting industry standard ANSI/IESNA LM-79-08. The device also includes linearity correction,supports dual settings with two methods, Pin define and I2C command settings.

The application field of BH1721FVC-TR can be used in many fields needing powerful ambient light or infrared sensing ability. Here are some examples. It can be used in the automatic brightness adjustment for displays such as the on-board control system for automobiles, industrial analysis, health and medical markets, etc. In addition, the device can also be applied in smart lighting, energy saving applcations like streetlights or the smart home environment.

The working principle of BH1721FVC-TR is based on the light to electricity conversion technology. This technology uses the photo diode to detect the ambient light or infrared light and release the corresponding light intensity flux, that is converted into an electrical signal and outputted for further interpretation. Because of the integrated optical filter, the device can be used to detect the low intensity light from 0.01 lux and also can sense the infrared light. With that, it can be used for dual light sensing.

The BH1721FVC-TR has the characteristics of low power consumption, wide operating voltage range, and a wide dynamic range to measure the light intensity in a broad range of applications. The device also has a high resolution and wide dynamic range that can detect from very low levels of light down to 0.01 lux all the way up to 128K lux. The device has a high accuracy and repeatability that makes it perfect for a variety of applications. As the device is suitable for both ambient light and infrared light sensing, it makes it much more efficient and useful compared to others.

All the features make the BH1721FVC-TR a very powerful an efficient device for ambient light or infrared sensing. It is an ideal device for applications that require accurate light intensity measurements for sensing and controlling purposes. With its low power consumption, wide dynamic range and high accuracy, the device is perfect for a variety of applications.

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