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The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5252
The ACS72981 current sensor module is a state-of-the-art solution based on the Hall effect, providing electrical isolation of the current path. This allows it to be placed anywhere in an electrical circuit while offering safe and precise measurements. The sensor features a noise-resistant design, eliminating the influence of uniform magnetic fields such as the Earth's field. With a low conduction path resistance (0.2 mΩ) and a multi-layer PCB (6 layers, 2 oz copper), energy losses are minimized.

The sensor provides a wide-band analog output (up to 250 kHz) proportional to AC or DC current, with a response time of less than 2 µs. A built-in digital temperature compensation mechanism enhances measurement accuracy across a wide temperature range.
Multiple mounting methods allow for easy integration into circuits – you can solder wires directly to the holes, use solderless ring terminals, or attach screw terminals. The largest holes accommodate wires up to 8 AWG and M3.5 screws, while additional 3.5 mm and 5 mm holes support screw connectors or header pins.

The module is ideal for applications requiring precise current measurement, such as energy management systems, battery monitoring, protection circuits, and industrial electronics. Its electrical isolation allows safe current monitoring in high-voltage systems, while its low power consumption makes it suitable for mobile and battery-powered devices. With a user-friendly interface and compact design, the sensor is an excellent choice for both professionals and hobbyists. It can be used in prototyping, testing, and as a component in fully developed measurement systems. The ease of integration and broad range of applications make the ACS72981 an essential tool in modern electronics.
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5252
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The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5253
Large Carrier version current sensor from Pololu, model 5277, based on the ACS72981KLRATR-150B3 IC, designed for measuring current in the range from -150 A to +150 A at a 3.3 V supply in applications requiring galvanic isolation and analog output. Pololu 5277
Precision Hall effect current sensor offering galvanic isolation, wide 150 kHz bandwidth and the ability to measure AC and DC current with very low power loss. With differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5290
Precision Hall effect current sensor offering galvanic isolation, wide bandwidth of 150 kHz and the ability to measure AC and DC current with very low power loss. Thanks to differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5291
Compact Pololu 5292 current sensor based on the ACS37220 IC, designed for measuring currents up to ±100 A at a 5 V supply voltage in applications requiring galvanic isolation and an analog output. Pololu 5292
Precision Hall effect current sensor offering galvanic isolation, wide bandwidth of 150 kHz and the ability to measure AC and DC current with very low power loss. Thanks to differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5293
Compact Pololu 5294 current sensor based on the ACS37220 IC, designed for measuring currents up to ±200 A at a 5 V supply voltage in applications requiring galvanic isolation and an analog output. Pololu 5294
Precision Hall effect current sensor offering galvanic isolation, wide bandwidth of 150 kHz and the ability to measure AC and DC current with very low power loss. Thanks to differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5295
Precision Hall effect current sensor offering galvanic isolation, wide 150 kHz bandwidth and the ability to measure AC and DC current with very low power loss. With differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5296
Large Carrier version current sensor from Pololu, model 5297, based on the ACS37220LEZATR-100B5 IC, designed for measuring current in the range from -100 A to +100 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5297
Large Carrier version current sensor from Pololu, model 5298, based on the ACS37220LEZATR-150B5 IC, designed for measuring current in the range from -150 A to +150 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5298
Large Carrier version current sensor from Pololu, model 5299, based on the ACS37220LEZATR-200B5 IC, designed for measuring current in the range from -200 A to +200 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5299
Compact current sensor Pololu 5300 based on the CT432-HSWF20MR, designed for current measurement in the range from -20A to +20A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5300
Compact current sensor Pololu 5301 based on the CT432-HSWF30MR, designed for current measurement in the range from -30A to +30A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5301
Compact current sensor Pololu 5302 based on the CT432-HSWF50MR, designed for current measurement in the range from -50A to +50A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5302
Compact current sensor Pololu 5303 based on the CT432-HSWF65MR, designed for current measurement in the range from -65A to +65A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5303
Compact current sensor Pololu 5306 based on the CT432-HSWF50DR, designed for measuring current in the 0–50A range at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5306
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5252