TSOP18240

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TSOP18240 Application Field and Working Principle

The TSOP18240 is a photo detector, known as a Remote Receiver, capable of recognizing modulated infrared signals in all types of remote control systems such as TV, air conditioners, fan regulators, etc. It is capable of operating in harsh environments due to its excellent immunity to ambient light and can be operated with the standard 38KHz remote control. It is highly reliable, cost-effective, and can be used in all kinds of applications.

Application Fields

The TSOP18240 is used in various kinds of consumer electronics, like televisions, air conditioners, fan regulators, VCDs, DVD players and others. It is also used in automotive systems, industrial automation, security systems, and telecommunication. This photo detector is usually used in remote control applications, due to its excellent immunity to ambient light and very low power requirements.

It can detect infrared radiation from remote controls of a wide range of frequencies, from a variety of sources such as home appliances, computers, televisions, satellite receivers, camera remotes, etc. As such, it can be utilized for different types of applications, including home automation, remote control, industrial process control, security systems, etc.

Working Principle

The working principle of the TSOP18240 is based on the detection of modulated and unmodulated infrared radiation. The device includes an infrared receiver diode with an integrated bandpass filter that is sensitive only to the modulated signals from the remote control. The device is designed to respond to an input modulated signal with an internal oscillator at a receiver frequency of 36 to 40KHz.

The receiver then amplifies the received signal by making use of two high-gain transimpedance amplifiers, thus enabling the photo detector to detect infrared radiation from a remote control in any environment. The device can also detect non-modulated signals such as those generated by remote control cameras and UHF remote controls.

The TSOP18240 is designed to have a high sensitivity to detect weak modulated and non-modulated signals over a wide range of operating temperatures. To avoid false triggers from ambient light, a high performance infrared sensitive filter is placed on the TSOP18240, protecting it from sunlight, incandescent lights, and other sources of infrared radiation. This makes the device suitable for application in harsh environments.

In summary, the remote receiver TSOP18240 is an indispensable device for remote control applications due to its sensitivity, high immunity to ambient light, low power requirements, low cost and versatility.

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