The RPM851A-E4 is an infrared (IR) receiver module manufactured by Rohm Semiconductor. This module integrates a photodiode and amplifier circuitry into a single package, making it easy to detect infrared light signals. It is commonly used in remote control systems and other applications that require IR communication.

Applications

• Remote Control Systems (TVs, DVD players, etc.)
• Infrared Data Transmission
• Light Curtains
• Proximity Sensors
• Optical Switches

Features

• Infrared Receiver Module
• Carrier Frequency: Typically 38 kHz (check datasheet for specific value)
• Supply Voltage: Typically 5V (check datasheet)
• Low Power Consumption
• High Sensitivity
• Compact Package
• Built-in Filter for Noise Reduction

Benefits

• Easy to use with minimal external components
• Reliable detection of infrared signals
• Immunity to ambient light interference
• Low power consumption for battery-powered applications
• Small size for space-constrained designs

Additional Details

The RPM851A-E4 operates by detecting infrared light modulated at a specific carrier frequency. The integrated filter helps to reject unwanted noise and interference from ambient light sources. The output of the module is typically a digital signal that can be directly interfaced with a microcontroller or other digital circuit. The detection distance depends on the IR transmitter's power and the ambient light conditions. Proper shielding and filtering techniques should be used to minimize noise and ensure reliable operation. The datasheet specifies the recommended supply voltage and operating conditions. Ensure that the supply voltage is within the specified range to prevent damage to the module.

This IR receiver module is designed to be RoHS compliant. Refer to the datasheet for the specific package type and pinout information.