LX1972IBC-TR Sensors, Transducers

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The LX1972IBC-TR optical sensors are part of a family of ambient light, IR, and UV sensors used for both industrial and consumer applications. Their use of lens-less arrays of photodiodes allow for accurate measurements and precision for applications such as motion detection, pulse monitoring, color sensing and many others.

Operating Principle

The LX1972IBC-TR is a transimpedance amplifier with an array of 9 photodiodes. The photodiodes are sensitive to light in the visible spectrum (Visible - 400nm- 700nm) and near Infrared (NIR - 700nm - 1100nm). While the device is designed to be lens-less, it can be used with the optional lens for improved performance. The lens-less design makes it attractive for applications that have limited space or to create a wide field of view.

When an incident light hits the array it creates a conversion of energy (photo-conversion). This causes an electric current generated by the photodiodes, which is integrated and then amplified. This amplified signal is then output through pin 8 of the device into the signal interface. The amplifier compensates for the nonlinear response of the photodiodes depending on the incident light\'s wavelength, which creates better accuracy.

Typical Applications of LX1972IBC-TR

One potential application of the LX1972IBC-TR is motion sensing. When a person or an object moves in front of the device, the intensity of the incident light changes. This change is detected as movement, which can be used to trigger an action. The device can also be used to detect ambient light levels, or specific colors or objects. The device has a useful dynamic range to measure both small and large changes in light intensity.

Another application is pulse detection. The LX1972IBC-TR can measure and detect changes in pulse intensity over a short time scale. This can be used to measure pulse rate, or used in motion activated "clap on" or "light on" applications. The device can work with very small amounts of light, so it is suitable for applications that are in low light conditions such as hospitals.

The LX1972IBC-TR can also be used to detect UV levels as it has a UV bandwidth of 200nm to 400nm. This makes the device suitable for a range of applications including security, skin tanning, and HVAC control.

Conclusion

The LX1972IBC-TR optical sensor is a versatile device with many applications in industrial and consumer markets. Its lens-less design, precision results, and flexibility make it a top choice for applications where motion detection, pulse monitoring, color sensing, and UV level detection are needed.

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