TSOP37438TT2

TSOP37438TT2 Application Field and Working Principle

TSOP37438TT2 is a FSK/ASK remote receiver module that uses CMOS integrated circuit technology and is commonly employed in wireless communication applications. This device is optimized to receive FSK/ASK signals at a wavelength of 940nm, and can be used to detect the on/off key of an infrared remote control. In addition to being able to detect infrared signals, TSOP37438TT2 can also detect modulated data signals on all its eight outputs.

Applications

TSOP37438TT2 is commonly used for infrared remote control detection in home appliances and consumer electronics, such as television sets, audio players, and video-audio systems. The TSOP37438TT2 module is also used in automotive diagnostics, RFID applications, wireless communication systems, and burglar alarms.

Working Principle

The TSOP37438TT2 module is equipped with an integrated infrared receiver that consists of a pair of infrared receiver diodes arranged in an opposite manner. When an infrared signal with a frequency of 38kHz is incident on one of the receivers, the voltage generated is converted to electric current by a current amplifier integrated on the module. The electric current further passes through a bandpass filter to reject unwanted signals, before reaching the output pin through an IR amplifier and a voltage comparator. The output of the module is a positive pulse with a duration lasting the length of the infrared signal wavelength.

Conclusion

The TSOP37438TT2 module is an integrated and highly reliable infrared remote receiver module. It is used widely, in a variety of applications, as it is capable of receiving even weak signal modulated data. This module is also resistant to electromagnetic interference, and its small size makes it ideal for use in space-constrained environments. The TSOP37438TT2 has quickly become one of the most popular remote receiver modules.