ACS712 5A Current Sensor Module

The ACS712 5A Current Sensor Module is a Hall-effect based current sensing module designed to measure both AC and DC current up to ±5A. It converts current flowing through the sensor into a proportional analog voltage that can be easily read by microcontrollers such as Arduino, ESP32, Raspberry Pi, and other development boards.

The module is built around the ACS712ELC-5A sensor IC, which provides accurate current measurement with electrical isolation between the sensing path and signal output. This makes it suitable for applications requiring safe current monitoring, protection circuits, and energy measurement systems.

The sensor works by detecting the magnetic field generated by current flowing through its internal copper conduction path. The internal Hall sensor converts this magnetic field into an analog voltage output proportional to the current. The module operates from a single 5V supply and produces an analog output centered around 2.5V when no current is flowing.

With a sensitivity of 100mV/A, the ACS712 module is capable of detecting current changes with good accuracy. The onboard FILTER pin allows bandwidth adjustment, enabling users to reduce noise and improve signal stability depending on the application.

This current sensor module is widely used in overcurrent protection circuits, battery chargers, power supply monitoring, digital watt meters, and embedded electronics projects. It is an ideal component for students, hobbyists, and engineers working on electronics and IoT projects.

Note: The color of the module PCB may vary depending on stock availability.

Key Features

• Measures both AC and DC current up to ±5A
• Based on ACS712 Hall Effect Current Sensor IC
• Analog voltage output proportional to current
• Low-noise signal path for stable readings
• Adjustable bandwidth via FILTER pin
• Fast 5µs response time
• Electrical isolation between sensing and control circuits
• Compatible with Arduino and other microcontrollers
• Compact and easy-to-use module

Technical Specifications

Sensor IC: ACS712ELC-5A
Operating Voltage: 4.5V – 5.5V
Current Measurement Range: −5A to +5A
Sensitivity: 100mV/A
Output Type: Analog Voltage
Isolation Voltage: 2.1kV RMS
Response Time: 5µs
Module Length: 32 mm
Module Width: 13 mm
Height: 13.5 mm
Weight: 5 g

Applications

• Overcurrent protection circuits
• Battery charging systems
• Power supply monitoring
• Digital watt meters
• Smart energy meters
• Programmable current sources
• Arduino and microcontroller projects
• Robotics power monitoring
• IoT energy measurement systems

Package Includes

1 × ACS712 5A Current Sensor Module