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A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5447
ACS37041 Micro Carrier is a compact module based on the Allegro current sensor, utilizing Hall effect technology and providing galvanic isolation for measurements. The device features a very low current path resistance, minimizing energy loss and ensuring high accuracy for both DC and AC current measurements. The analog output offers a wide 150 kHz bandwidth, allowing fast and precise current measurement in dynamic circuits. The sensor response time is less than 5 µs, making it ideal for applications requiring rapid response.

The module has five essential pins: current inputs IP+ and IP-, logic supply VDD and GND, and signal output VOUT. Power should be connected to the VDD and GND pads marked on the bottom of the board. The VOUT output generates an analog signal with a resting voltage of 2.5 V, which changes proportionally to the input current. Positive current increases the output voltage, while negative current decreases it.
The board can be integrated into the current path in various ways, depending on the application. In typical high-current applications, wires up to 10 AWG can be soldered directly to the mounting holes. These holes are also compatible with M3.5 mounting holes and screw terminals with a 3.5 mm or 5 mm pitch, facilitating module installation in prototype and final setups. Alternatively, goldpin connectors can be used, although they are not recommended for high currents.

The sensor provides integrated temperature compensation, increasing accuracy across the full operating temperature range of -40°C to 125°C, according to automotive standards. The device is non-ratiometric, meaning its zero point and sensitivity are independent of supply voltage fluctuations, ensuring noise immunity. Its compact size makes it ideal for small projects.
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Pin header goldpin black 1x40 pins. Angled connector for through-hole assembly. 2.54mm pitch.
2-pin ARK mounting strip, 3.5 mm pitch. 381-3.5-02P-14-00AH. Set of 10 pieces
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 A range with galvanic isolation. It features an analog VOUT output with a sensitivity of 132 mV/A and a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance (~1.6 mΩ) minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5440
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Current measurement module using the galvanically isolated Allegro ACS37200LLXTR-100B5 Hall-effect sensor. It provides a ±100 A bidirectional range, 150 kHz bandwidth, response time below 4 µs, and an extra-low current path resistance of approximately 0.05 mΩ. Pololu 5793
Current measurement module with the galvanically isolated Allegro ACS37200LLXTR-200B3 Hall-effect sensor. It provides a ±200 A bidirectional range, 6.6 mV/A sensitivity, 150 kHz bandwidth, and a response time below 4 µs. The large carrier board facilitates high-current connections. Pololu 5792
Compact module for bidirectional current measurement using the galvanically isolated Allegro ACS37200LLXTR-100B5 Hall-effect sensor. It provides a ±100 A range, 20 mV/A sensitivity, 150 kHz bandwidth, and a response time below 4 µs. Pololu 5783
Compact module for bidirectional current measurement using the galvanically isolated Allegro ACS37200LLXTR-200B3 Hall-effect sensor. It provides a ±200 A range, 150 kHz bandwidth, response time below 4 µs, and an extra-low current path resistance of approximately 0.05 mΩ. Pololu 5782
Current measurement module using the galvanically isolated Allegro ACS37030LMYATR-065B3 sensor. A combination of Hall-effect sensing and an inductive coil provides DC to 5 MHz measurement bandwidth, a ±65 A range, and a typical response time of 40 ns. The larger carrier board facilitates high-current connections. Pololu 5699
Current measurement module using the galvanically isolated Allegro ACS37030LMYATR-040B3 sensor. A combination of Hall-effect sensing and an inductive coil provides DC to 5 MHz measurement bandwidth, a ±40 A range, and a typical response time of 40 ns. The larger carrier board facilitates high-current connections. Pololu 5698
Compact module for bidirectional current measurement using the galvanically isolated Allegro ACS37030LMYATR-065B3 sensor. A combination of Hall-effect sensing and an inductive coil provides DC to 5 MHz measurement bandwidth, a ±65 A range, and a typical response time of 40 ns. Pololu 5696
Compact module for bidirectional current measurement using the galvanically isolated Allegro ACS37030LMYATR-040B3 sensor. A combination of Hall-effect sensing and an inductive coil provides DC to 5 MHz measurement bandwidth, a ±40 A range, and a typical response time of 40 ns. Pololu 5695
Compact module for bidirectional current measurement using the galvanically isolated Allegro ACS37030LMYATR-025B3 sensor. A combination of Hall-effect sensing and an inductive coil provides DC to 5 MHz measurement bandwidth, a ±25 A range, and a typical response time of 40 ns. Pololu 5694
Current measurement module using the Allegro ACS37100LMATR-050B3 TMR sensor with a galvanically isolated current path. It enables bidirectional current measurement in the ±50 A range, offering measurement bandwidth up to 10 MHz and a short response time of approximately 50 ns. The larger carrier board provides more space for larger connectors and thicker wires. Pololu 5479
Current measurement module using the Allegro ACS37100LMATR-025B3 TMR sensor with a galvanically isolated current path. It enables bidirectional current measurement in the ±25 A range, offering measurement bandwidth up to 10 MHz and a short response time of approximately 50 ns. The larger carrier board provides more space for larger connectors and thicker wires. Pololu 5478
Compact current measurement module using the Allegro ACS37100LMATR-050B3 TMR sensor with a galvanically isolated current path. It enables bidirectional current measurement in the ±50 A range, offering measurement bandwidth up to 10 MHz and a short response time of approximately 50 ns. Pololu 5477
Compact current measurement module using the Allegro ACS37100LMATR-025B3 TMR sensor with a galvanically isolated current path. It enables bidirectional current measurement in the ±25 A range, offering measurement bandwidth up to 10 MHz and a short response time of approximately 50 ns. Pololu 5476
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5447