ACS37041 Current Sensor Carriers

ACS37041 Current Sensor Micro Carrier (top) and Compact Carrier (bottom) basic dimensions with US quarter for size reference.

We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS37041 Hall effect-based, electrically isolated current sensors; we therefore recommend careful reading of the ACS37041 datasheet before using this product. The following list details some of the sensor’s key features:

• Hall effect-based sensor with electrically isolated current path allows the sensor to be inserted anywhere along the current path and to be used in applications that require galvanic isolation.
• Low primary current path resistance of 1.6 mΩ in the sensor IC, so very little power is lost in the module.
• Differential Hall sensing rejects common-mode fields, so the orientation of the sensor relative to uniform external magnetic fields (e.g. the Earth’s magnetic field) has less effect on the measurement.
• High-bandwidth 150 kHz analog output voltage proportional to AC or DC currents.
• Less than 5 µs response time.
• Output is not ratiometric (i.e. the zero point and sensitivity are independent of the actual supply voltage), which provides immunity from noisy supplies.
• Integrated temperature compensation circuitry allows improved accuracy over the full operating temperature range.
• Automotive-grade operating temperature range of -40°C to 125°C.
• Carrier boards, available in micro (0.3″×0.4″) and our standard compact (0.7″×0.8″) sizes, offer a variety of ways to insert it into the current path along with 0.1″-pitch (breadboard-compatible) power, ground, and output pins.
• 3.3V and 5V versions available.

The following table lists the available ACS37041 carrier options:

	Pololu Item #	Part Suffix	Supply Voltage	Current Range	Sensitivity (mV/A)	Zero Point	Size	PCB Details	Price
Micro Carriers
	#5440 (coming June 2025)	010B3	3.0 V to 3.6 V	±10 A	132	1.65 V	0.3″×0.4″	2 layers, 1-oz copper	$3.19
	#5441	030B3		±30 A	44
	#5442	010B5	4.5 V to 5.5 V	±10 A	200	2.5 V
	#5443	030B5		±30 A	66.7
Compact Carriers
	#5444 (coming June 2025)	010B3	3.0 V to 3.6 V	±10 A	132	1.65 V	0.7″×0.8″	2 layers, 2-oz copper	$3.49
	#5445	030B3		±30 A	44
	#5446	010B5	4.5 V to 5.5 V	±10 A	200	2.5 V
	#5447	030B5		±30 A	66.7

Alternatives available with variations in these parameter(s): current range size Select variant…

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