The RPM871-E2A is an infrared remote control receiver module manufactured by Rohm Semiconductor. These modules are designed to receive and demodulate infrared signals transmitted from remote controls. The demodulated signal is then output as an electrical signal, ready for processing by a microcontroller or other control circuitry. It is commonly used in consumer electronics to facilitate remote control functionality.

Applications

• Televisions and set-top boxes
• DVD players and Blu-ray players
• Audio equipment (receivers, amplifiers)
• Air conditioners and other home appliances
• Remote-controlled toys and robots
• Lighting control systems

Features

• Compact package size
• High sensitivity and long reception range
• Excellent immunity to ambient light and noise
• Built-in AGC (Automatic Gain Control)
• Carrier frequency: 36.7 kHz
• Supply voltage: 4.5V to 5.5V

Benefits

• Enables reliable remote control operation
• Simplifies receiver circuit design
• Reduces board space requirements
• Maintains stable performance under varying environmental conditions
• Low power consumption

Additional Details

The RPM871-E2A integrates a PIN photodiode, preamplifier, and demodulation circuit within a single molded package. The AGC circuit automatically adjusts the gain to compensate for variations in IR signal strength. This maintains a consistent output signal even with weak or distant remote control signals. The module is designed to reject noise from ambient light sources, such as fluorescent lamps and sunlight, ensuring accurate signal reception. The output is an active low signal, meaning it is low when an IR signal is detected. The center frequency is 36.7kHz. The supply current is typically 0.7mA. It is RoHS compliant.