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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
ACS37220 Hall Effect Current Sensor is a current sensing module based on the Hall effect, offering electrical isolation and a wide bandwidth of 150 kHz. Thanks to its ultra-low conductive path resistance, it ensures minimal power loss and high measurement efficiency. The sensor can be placed anywhere in the circuit and is suitable for applications requiring galvanic isolation. The use of differential Hall sensing provides immunity to external magnetic fields, enhancing measurement accuracy. The sensor outputs an analog voltage proportional to the current value, supporting both DC (direct current) and AC (alternating current) measurements. The module operates on a supply voltage between 3.15 V and 3.45 V, and the output is ratiometric—centered at VCC/2, varying by 8.8 mV per amp of current.

To function correctly, the sensor requires five connections: current input (IP+ and IP-), logic power (VCC and GND), and the sensor output (VOUT). The FAULT pin is pulled up to VDD by default and goes low when the current (IP) exceeds the overcurrent threshold in either direction, indicating a fault condition. The module is built on a multi-layer PCB for durability and reliability. Large mounting holes allow for direct wire connections or terminal usage. Alternatively, 2.54 mm spaced holes are available, though not recommended for high-current applications. With high accuracy, flexible mounting options, and strong EMI resistance, the sensor is well-suited for power systems, converters, battery monitoring, and motor control systems.
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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
The Pololu 5318 current sensor provides electrically isolated unidirectional AC and DC current measurement from 0 A to 50 A. Based on the Allegro CT433-HSWF50DR with TMR technology, the module offers up to 1 MHz bandwidth and an analog interface. Pololu 5318
Pololu 5319 current sensor provides electrically isolated DC current measurement in the range of 0 A to 65 A. Based on the Allegro CT433-HSWF65DR sensor, the module uses TMR technology and offers a bandwidth of up to 1 MHz together with an analog interface. Pololu 5319
Current sensor Pololu 5322 enables electrically isolated AC and DC current measurement in the range from -50 A to +50 A. The module is based on the Allegro CT432-HSWF50MR TMR sensor IC and provides up to 1 MHz bandwidth with an analog interface. Pololu 5322
Pololu 5323 current sensor provides electrically isolated AC and DC current measurement in the range of -65 A to +65 A. Based on the Allegro CT432-HSWF65MR sensor, the module uses TMR technology and offers a bandwidth of up to 1 MHz together with an analog interface. Pololu 5323
Pololu 5326 current sensor provides electrically isolated DC current measurement in the range of 0 A to 50 A. Based on the Allegro CT432-HSWF50DR sensor, the module utilizes TMR technology, offering a 1 MHz bandwidth and an analog interface. Pololu 5326
Pololu 5242 with the ACS71240KEXBLT-050B3 chip is a compact current sensor module for precision measurement applications in the ±50 A range. With galvanic isolation, fast response to current changes, and short-circuit detection capability, it is used in power systems, automotive and industrial electronics, and embedded projects. It is ideal for measuring currents in both DC and AC circuits while ensuring safety and accuracy.
Pololu 5328 current sensor provides electrically isolated DC current measurement in the range of 0 A to 70 A. Based on the Allegro CT432-HSWF70DR sensor, the module utilizes TMR technology, offering a 1 MHz bandwidth and an analog interface. Pololu 5328
Pololu 5333 current sensor provides electrically isolated AC and DC current measurement in the range of -50 A to +50 A. Based on the Allegro CT433-HSWF50MR sensor, the module utilizes TMR technology, offering a 1 MHz bandwidth and an analog output signal.
Pololu 5335 current sensor provides electrically isolated AC and DC current measurement in the range of -70 A to +70 A. Based on the Allegro CT433-HSWF70MR sensor, the module utilizes TMR technology, offering a 1 MHz bandwidth and an analog voltage output.
The module enables unidirectional AC and DC current measurement over a range from 0 A to 50 A. XtremeSense™ TMR technology, an electrically isolated current path, 1 MHz bandwidth, and an analogue voltage output support use in systems requiring fast current measurement and high dV/dt immunity. Pololu CT433-HSWF50DR Large Carrier 0–50 A, 3.3 V
The module enables unidirectional AC and DC current measurement over a range from 0 A to 65 A. XtremeSense™ TMR technology, an electrically isolated current path, 1 MHz bandwidth, and an analogue voltage output support use in systems requiring fast current measurement and high dV/dt immunity. Pololu CT433-HSWF65DR Large Carrier 0–65 A, 3.3 V
The INA3221 module, which allows simultaneous measurement of voltage and current for three power supplies via I2C with ±1% precision. With a 13-bit ADC and built-in 0.05Ω shunt resistors, it allows accurate monitoring of currents up to ±3.2A and voltages up to +26VDC. Adafruit 6062
HSTS08L 10A 2.5V Current Sensor. Enables measurement of high currents. modHSTS08L
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SCT010T-D 10A 5V AC Current Sensor. Enables measurement of high AC currents. modSCT010T-D
Compact current sensor based on TMR technology, enabling precise measurements up to 30 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5317
Compact current sensor based on TMR technology, enabling precise measurements up to 20 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5316
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