QSE159E3R0

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Optical sensors are ubiquitous components in numerous devices and appliances, providing a range of capabilities. Photo detectors are one class of sensors that are used to detect changes in light levels, enabling detailed analyses of a range of subjects. The QSE159E3R0 is a type of photo detectory that boasts logic-level output—meaning it senses light levels and then applies logic to two separate output signals—and is well-suited for use in a variety of different applications.

This versatile photo detector, which is offered by ON Semiconductor, features high accuracy with 0.75% typical peak detection accuracy. It can detect light from sources with wavelengths between 300 and 1200 nm and includes an adjustable response time of up to 12.8 ms. The device also boasts low power consumption, being able to operate within a maximum operating current of 16 μA, making it ideal for use in energy-constrained environments.

The QSE159E3R0 is optimised to accurately detect changes in light levels. The device is capable of distinguishing between objects with different levels of contrast, and when combined with its adjustable response time, this makes it ideal for a wide variety of applications. Due to its logic-level output, the device can directly drive transistors or other logic-level circuits without the need for any external components. This simplifies and expedites the design process, enabling fast and accurate implementations in numerous systems.

The QSE159E3R0 is often employed for detecting small changes in light levels. This is especially true for machines such as photocopiers, as the device enables the machine to quickly position original documents on the copy surface. The device can also be used in a range of security systems, such as electric door locks, as its logic-level output simplifies system operation by eliminating the need for voltage comparators and other circuits.

The working principle of the QSE159E3R0 involves it sensing the light that enters its optical cavity. The detector operates by collecting light and converting it into an electric current. When the amount of light in front of the device crosses a certain threshold, it triggers the output signal providing logic-level output. Once the output is activated, the DPDT logic output can be used to turn on/turn off whatever circuitry is connected to it.

In summary, the QSE159E3R0 is a versatile and powerful device. Its features, including high accuracy, adjustable response time, low power operation and logic-level output, make it well-suited for numerous electronic systems. The device is particularly useful for detecting small changes in light levels and is found in many applications such as photocopiers, electric door locks, and larger cameras. The working principle of the QSE159E3R0 involves it sensing light and providing a logic-level output once the threshold is crossed.

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