The TSOP1240 is a miniaturized receiver for infrared remote control systems. This device is designed for standard IR remote control applications and is commonly used in consumer electronics like TVs, DVD players, and audio equipment. It incorporates a PIN diode and a preamplifier assembled on a lead frame, encapsulated by an epoxy package. The demodulated output signal can be directly decoded by a microprocessor.

Applications:

• Infrared remote control systems
• Light barriers
• Proximity switches
• IR data transmission

Features:

• Low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved immunity against ambient light
• 2.7 V to 5.5 V supply voltage
• TTL and CMOS compatibility
• Output active low

Benefits:

• Reduced component count and cost
• Simplified design and assembly
• High noise immunity
• Reliable performance in various lighting conditions
• Easy integration with microcontrollers

Additional Details:

The TSOP1240 operates at a carrier frequency of 40 kHz. It is designed to suppress spurious pulses from energy-saving lamps and other sources of noise. The device's robust design ensures reliable operation even in environments with high levels of ambient light. The output of the TSOP1240 is active low, meaning that it outputs a low signal when an infrared signal at the carrier frequency is detected. This signal can be directly connected to a microcontroller for decoding and processing.

The device is highly sensitive to IR radiation within a specific wavelength range, typically around 940 nm. The integrated filter helps to reject unwanted signals outside of this range, improving the overall performance of the remote control system. The TSOP1240 is available in a standard 3-pin through-hole package. It is designed for easy mounting and soldering onto printed circuit boards.

The TSOP1240 is widely used due to its simplicity, reliability, and cost-effectiveness in infrared remote control applications. Its small size and integrated design make it an ideal choice for compact consumer electronic devices.