The Vishay TSOP1237 is a miniaturized receiver for infrared remote control systems. It is designed for infrared remote control systems and data transmission, operating at a carrier frequency of 36.7 kHz. This component integrates a photodiode, preamplifier, and IR filter into a single epoxy package.

Applications

• Infrared remote control systems for televisions
• Infrared remote control systems for set-top boxes
• Infrared remote control systems for audio equipment
• Remote control for air conditioners
• Light barrier

Features

• Improved immunity against ambient light
• Low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• TTL and CMOS compatibility
• Output active low
• Supply voltage: 2.5 V to 5.5 V
• Carrier frequency: 36.7 kHz
• Available in different packages

Benefits

• Enhanced performance in noisy environments because of improved immunity to ambient light.
• Reduced power consumption due to its low supply current.
• Simplified design due to the integrated photo detector and preamplifier.
• Increased reliability due to the internal filter for PCM frequency.
• Easy integration with digital circuits because of TTL and CMOS compatibility.

Additional Details

The TSOP1237 functions effectively within a supply voltage range of 2.5 V to 5.5 V, accommodating a variety of power supply configurations. The device's epoxy package is designed to filter out unwanted IR signals, ensuring that only the intended 36.7 kHz carrier frequency is processed. The output of the TSOP1237 is active low, meaning that it outputs a low signal when an infrared signal of the correct frequency is detected.