Replace the Shunt: Discover Allegro’s Magnetic Current Sensors to Make Your Design Better

Technology advancements and the evolution of magnetic current sensors over the last two decades have made them a compelling alternative to traditional shunt-based current sensing circuits. With greater efficiency and isolation, higher bandwidths, smaller size and improved overall performance, engineers and designers can quickly and easily integrate these sensors into their electronic systems. 

Packaging Innovation: Designers and engineers face the ongoing challenge of creating electronic systems that are both compact and energy-efficient. Allegro's innovative packages, featuring integrated shunt-less sensor solutions, directly address this challenge. By eliminating the need for external shunt resistors and other discrete components, designers and engineers can achieve significant reductions in both component count and overall circuit size while improving efficiency.

  • Compact design: The integrated magnetic current sensors are significantly smaller, saving valuable board space and reducing the number of components on the bill of materials.
  • Lower heat dissipation: The lower conductor resistance of integrated magnetic current sensors’ lead frames result in cooler system temperatures.
  • Simplified design process: By integrating the functionality of a traditional shunt resistor circuit into a single package, Allegro’s technology simplifies component placement and streamlines the design process.

Download our application note to discover why magnetic current sensors outperform
shunt-based solutions and how they can optimize your designs.

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Featured Products

ACS37220 Product Image

ACS37220

The ACS37220 is a high-power-density 200A, 150kHz magnetic current sensor for applications requiring an isolation voltage below 100V.

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ACS37041

ACS37041 and ACS37042

ACS37041 and ACS37042 are fully integrated Hall-effect-based current sensor ICs that provide a galvanically isolated voltage output proportional to the sensed current.

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Allegro EX 12 Package

ACS71240

Automotive-Grade, Galvanically Isolated Current Sensor IC

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LC-EX Package Combo Image for ACS711, a Hall-Effect Linear Current Sensor

ACS711

Hall-Effect Linear Current Sensor with Overcurrent Fault Output for <100 V Isolation Applications

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Magnetic Current Sensors Outperform Shunt-Based Solutions

Allegro's magnetic current sensor ICs offer a superior alternative to traditional shunt-based current sensing, resulting in smaller, more efficient, and cost-effective designs for applications like motor control and clean energy systems.

Evaluation Board Table

Allegro Device Evaluation Board(s) Name Board Description

ACS37220 

Pololu ACS37220 Current Sensor Carrier Boards

Third party evaluation boards for the ACS37220 product family

ACSEVB-EZ7-37220-100B3

 ACS37220 evaluation board for the ACS37220LEZATR-100B3 (±100A, 3.3V variant) 

ACSEVB-EZ7-37220-100B5

ACS37220 evaluation board for the ACS37220LEZATR-100B5 (±100A, 5V variant) 

ACSEVB-EZ7-37220-150B3

ACS37220 evaluation board for the ACS37220LEZATR-150B3 (±150A, 3.3V variant) 

ACSEVB-EZ7-37220-150B5

ACS37220 evaluation board for the ACS37220LEZATR-150B5 (±150A, 5V variant) 

ACSEVB-EZ7-37220-200B5

ACS37220 evaluation board for the ACS37220LEZATR-200B5 (±200A, 5V variant) 

ACS37041 

ACSEVB-LH5

Bare board compatible with ACS37041 

ACS71240 

Pololu ACS71240KEXBLT-010B3 Current Sensor Carrier Board 

Third party evaluation board for the ACS71240 (±10A, 3.3V variant) in the “EX” 3x3mm QFN package

ACSEVB-LC8-LZ6
ACSEVB-EX12

Bare boards compatible with ACS71240

ACS711 

Pololu ACS711KEXLT-15AB-T Current Sensor Carrier Board

Third party evaluation board for the ACS711 (±15A variant) in the “EX” 3x3mm QFN package 

MIKROE HALL CURRENT 2 CLICK Board

Third party evaluation board for the ACS711 (±12A variant) in the “LC” SOIC-8 package 

ACSEVB-LC8-LZ6
ACSEVB-EX12

Bare boards compatible with ACS711