TSOP85338

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Introduction

TSOP85338 is a remote receiver part of an infrared remote control (IRC). As a specialized photo detector, TSOP85338 is designed to detect infrared signals from an infrared source. It has wide application such as automotive electronics, consumer electronics, industrial automation and fields related to wireless communication.

Application Field

The TSOP85338 is mainly used in applications like automotive electronics, consumer electronics, industrial automation and fields related to wireless communication. The most popular application of TSOP85338 is in automotive keyless entry systems, which enable users to open car doors and start the car engine through wireless remote control.

The TSOP85338 is also commonly used for television channel switching, robotics, consumer electronic devices, and any project needing to detect pulses from remote control devices. It can be used to control alarm systems, to activate or deactivate electronic locks, in remote sensing applications and in some wireless sensing modules, for motion detectors.

Working Principle

TSOP85338 uses a combination of both optical and electrical elements to convert an incoming pulse of infrared light into an electrical signal. The device consists of a sensitized photo diode (PD) that absorbs infrared light and converts it into current, a preamplifier that amplifies the electrical signal, and a Schmitt trigger that further amplifies and shapes the electrical signal into a rectangular waveform. The output of the Schmitt trigger is a logic-level output, which is easier to interface with other circuits.

TSOP85338 is designed for optimal performance in the infrared range from 830nm to 970nm, and can be efficiently used with virtually any common infrared LED. It has a built-in filter that blocks visible light, while allowing infrared light to pass through to the PD. The PD then converts this incoming light into an electrical signal that is amplified by the preamplifier.

The preamplifier increases the strength of the signal, while the Schmitt trigger further amplifies and shapes the signal into rectangular waveform output. The output of the Schmitt trigger is a logic level output, which can be used as a digital signal for further processing.

Conclusion

TSOP85338 is a popular optical sensing device used in a variety of applications. It uses a combination of both optical and electrical elements to convert an incoming pulse of infrared light into an electrical signal. The device is primarily used in automotive electronics, consumer electronics, industrial automation and fields related to wireless communication. It is designed for optimal performance in the infrared range from 830nm to 970nm and can be used with practically any infrared LED. The output of the device is a logic level output, which can be used as a digital signal for further processing.

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