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Introduction

Communications between infrared remote control and receiver in the field of wireless control requires an infrared sensor to decode remote transmitter signals. The TSOP37538HTT1 is an easy-to-use, low-cost infrared receiver module designed to decode infrared signals from a remote control. This article introduces the application field of this device and its working principle.

Application Field

The TSOP37538HTT1 is widely used in various fields such as television and home electronics. It is an advanced compact solution to receive remote control signals, including TV\'s, DVD\'s, audio equipment, and other home entertainment products.

Specifications

The TSOP37538HTT1 has a typical current consumption of 1.05 mA and a typical low voltage of 2.7V. It has a maximum operating temperature range of -20°C to 80°C and a maximum storage temperature range of -30°C to 85°C. The device uses a single-ended control signal with a 3.3V supply voltage, making it ideal for use in low-power applications. The typical decay time is 6ms and the modulation frequency range is 30KHz - 56KHz, which makes it an ideal receiver for RF remote control signals.

Working Principle

The TSOP37538HTT1 works by receiving a modulated infrared signal from a remote control. The receiver circuit consists of a photodiode, a bandpass filter, an amplifier, an envelope detector and a demodulator. The received signal is first amplified before being passed through a band-pass filter. The signal is then demodulated, removing the carrier signal, and delivered to the output. Finally, the signal is converted to a logic 1 or 0, depending on the signal level.

Conclusion

The TSOP37538HTT1 is a widely used infrared receiver module which is used for decoding remote control signals in many applications. Its low-power characteristics make it ideal for use in power-sensitive applications. The device works by receiving and amplifying signals from a remote control before being passed through a band-pass filter and being demodulated and converted into digital logic.

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