The Vishay TSOP1138 is a miniaturized receiver for infrared remote control systems. This component is specifically designed for infrared remote control systems and data transmission, operating at a carrier frequency of 38 kHz. It incorporates a photodiode, preamplifier, and IR filter in a compact 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: 38 kHz
• Available in different packages

Benefits

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

Additional Details

The TSOP1138 operates efficiently within a supply voltage range of 2.5 V to 5.5 V, making it suitable for diverse power supply scenarios. The device's epoxy package effectively filters out extraneous IR signals, ensuring that only the intended 38 kHz carrier frequency is processed accurately. The output of the TSOP1138 is active low; a low signal indicates detection of a valid infrared signal at the designated frequency.