TSOP75438WTR Sensors, Transducers

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

TSOP75438WTR is a remote receiver in the field of Optical Sensors-Photo Detectors. It can receive and decode 38KHz infrared signals. It is a highly integrated device with low power consumption and functional safety protection. Wireless remote control based on infrared technology is widely used in various kinds of security systems, home appliances, remote control toys and so on.

Application field

The TSOP75438WTR can be applied in a variety of scenarios. It can be used to receive signal from the TV remote to control the TV, air conditioner, stereo etc. Thanks to its very high sensitivity, The TSOP75438WTR can work within a range of 7m at a 36 degree angle, and 10m in the horizontal direction. Besides, it can also be used in various security applications such as anti-theft systems and access control.

Working principle

TSOP75438WTR equipped with an infrared receiver module and demodulating processing circuit, that can receive and decode 38KHz infrared signals. The infrared receiver module is made up of an infrared filter, an infrared detector and a amplifying circuit. When infrared signal is received, the infrared detector will generate a weak electric signal, then it is amplified by the amplifying circuit and passed to the demodulating circuit.

The demodulating circuit uses I2C bus for communication between the receiver module and other MCU. When 38KHz signal is received, the signal will be filtered, demodulated and decoded by the demodulating circuit. Then the decoded signal is sent to the MCU through I2C bus.

In practical applications, the TSOP75438WTR is usually connected to an interrupt pin of the MCU to make sure it works normally. When 38KHz signal is received, the interrupt pin will be triggered and an interrupt signal will be generated, then the MCU can read the decoded signal from the demodulating unit.

Conclusion

In conclusion, TSOP75438WTR as a remote receiver in the field of Optical Sensors-Photo Detectors, is widely used in various kinds of scenarios, such as TV remote control, anti-theft systems and access control. Its working principle is mainly illustrated as a receiving and decoding 38KHz infrared signal with an infrared receiver module and demodulating processing circuit. This receiver module is usually connected to an interrupt pin of MCU to ensure a normal and fast operation.

The specific data is subject to PDF, and the above content is for reference