Pololu ACS724LLCTR-2P5AB Current Sensor Carrier -2.5A to +2.5A

The ACS724LLCTR-2P5AB is a versatile current sensor carrier designed to accurately measure bidirectional currents ranging from -2.5A to +2.5A. Operating at a 5V supply, it features a Hall effect-based sensor with an electrically isolated current path, ensuring minimal power loss and high precision. Its compact design, measuring approximately 1.8 cm by 2 cm, is compatible with breadboards and offers a range of connection options.

This sensor is ideal for applications requiring precise current measurements with electrical isolation, such as motor control systems, power monitoring, and battery management. Its differential Hall sensing capability effectively rejects common-mode magnetic fields, enhancing measurement accuracy even in environments with strong external magnetic influences.

One of the standout benefits of this sensor is its low internal resistance of approximately 1.2 mΩ, which minimizes power loss. It also offers a rapid response time of about 4 µs and supports both AC and DC current measurements with a 120 kHz bandwidth. The integrated digital temperature compensation circuitry ensures consistent accuracy across a wide temperature range from -40°C to 150°C, making it suitable for automotive and industrial applications.

The sensor's output is an analog voltage that varies linearly with the input current, centered at 2.5 V when powered with 5 V. For noise reduction and improved resolution at lower frequencies, the optional FILTER pin allows for bandwidth limiting. This flexibility makes it adaptable to various project requirements.

Installation is straightforward, with multiple connection options to suit different current levels. For low-current applications, standard 2.54 mm male header pins can be soldered onto the board. For higher currents, direct soldering of wires or the use of solderless ring terminal connectors is recommended. The board's design accommodates up to 8 AWG wires or M3.5 screws, ensuring robust connections for demanding applications.

It's important to note that this product is designed for use with voltages below 30 V. Handling higher voltages requires specialized knowledge and equipment, as it can be hazardous.