TSOP18140

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TSOP18140 Application Field and Working Principle

TSOP18140, also known as Remote Receiver, is a commonly used type of photo detector used in Optical Sensors. Optical Sensors are used in many different areas such as automotive, consumer, home security, lighting, entertainment, medical, and industrial applications.

Specifically, TSOP18140 is an active receiver with high sensitivity and good anti-interference capability, making it ideal for remote control and receiver applications. The application field of TSOP18140 includes infrared remote control, touch screen, infrared barrier detection, infrared encoder, and so on.

In terms of working principle, TSOP18140 is composed of four parts: photodetector diode, preamplifier, demodulator, and output LED. As shown in Figure 1, TSOP18140 contains a photodiode, which is sensitive to infrared radiation. When a pulse modulated signal is sent by the remote control, it is detected by the photodiode and converted into electrical signal. After that, the signal passes through a preamplifier, and then reaches a demodulator. Finally, the demodulator can decode the signal and a LED will be illuminated.

Figure 1: Illustration of TSOP18140\'s working principle

This simple circuit makes TSOP18140 widely used in different applications such as televisions, DVD players, remote infrared barriers, touch screens, and so on. Moreover, TSOP18140 has many advantages compared to traditional passive IR receivers, such as wide operating voltage range, improved noise protection, fast recovery time, and high sensitivity. For these reasons, TSOP18140 has become a popular choice for applications where remote infrared sensors are required.

In conclusion, TSOP18140 are optoelectronic components that act as remote receivers and are categorized as part of Optical Sensors - Photo Detectors. It has advantages like wide operating voltage range, improved noise protection, fast recovery time, and high sensitivity, making it perfect for applications such as infrared remote control, touch screens, and infrared barriers.

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