Quality Standards and Environmental Certifications

Field Sensors 0 to >1000 A Sensor ICs

We shine at high voltage. This product family offers industry-leading accuracy and safety, as well as a history of high reliability.

Customer-programmable for both offset and sensitivity, these Hall linear ICs are packaged in a 1 mm thick KT package SIP that is often used in applications with a ferromagnetic core and are designed to sense currents above 1500 A.

See below for our offerings of Hall-effect based linear current sensor ICs:

Documentation & Resources

Technical Article

Rethink PCB Current Sensing

This article will discuss two new innovative approaches to measure currents up to 600 A in PCB: a near-lossless Hall-based current sensor with an integrated conductor and a non-invasive standalone core-free and shield-free differential Hall current sensor.

Application Note

An Effective Method for Characterizing System Bandwidth in Complex Current Sensor Applications

This application note describes multiple methods for measuring and characterizing system bandwidth, with a focus on the impulse response method. Allegro’s ACS720 is the perfect device to validate the test methods outlined here.

Application Note

Increasing System Safety using the A1365 Programmable Linear Hall-Effect Sensor IC with Self-Test Diagnostic Mode

As safety goals multiply throughout the system design process, customers demand smart sensors that can be used to diagnose abnormalities in a system. The built-in Self-Test mode of the A1365 grants users such insight into their systems.

Application Note

Achieving Closed-Loop Accuracy in Open-Loop Current Sensors

Closed-loop current sensing technology is employed in many industrial and automotive applications for accurate current sensing. Allegro MicroSystems has developed magnetic-based current sensor IC solutions that achieve near closed-loop accuracy using an open-loop topology.

Brochure

Brochure: Allegro Coreless Current Sensing

Allegro’s Coreless Current Sensing Technology provides a highly accurate method of measuring hundreds or thousands of amps flowing through a busbar or a PCB without needing a concentrator core or U-Shaped Magnetic Shield.

Application Note

Transient Current Behavior in Applications using the Allegro Coreless ACS37610 Differential Current Sensor

AN296258 - This application note explains how the conductor design can impact the response time of the current measurement for coreless current sensing applications and provides examples of response time to transient current for two types of conductors.

Application Note

Improved Performance and Features of Allegro’s Next Generation, High Power Density CB Package Current Sensors

This application note will describe the use of the new high current ACS772 Hall-effect current sensor integrated circuit (IC) from Allegro MicroSystems and will give an overview of its features and improvements from previous Allegro high-current sensors.

Application Note

Advanced Hall-Effect Linear Current Sensor IC Enables High BW Sensing in Hybrid Electric Vehicles and other High Current Sensing Applications

The Allegro™ A1366 linear Hall-effect sensor IC has been designed to meet the high bandwidth, high accuracy requirements of HEV inverter applications.

Application Note

Allegro Current Sensor ICs: Unique Packaging Options for Every Thermal Budget

AN296190 - The data contained within this application note allows the user to effectively choose an Allegro current sensor package based on their system’s specifications.

Application Note

Notched Busbar Design Guidelines For Coreless ACS37610 Differential Current Sensor

AN296231 - This application note focuses on how a busbar should be designed to achieve optimum performance with the ACS37610 coreless current sensor.

Application Note

Overcurrent Fault Detection Using ACS37610 Coreless Current Sensor

AN269241 - This application note explains how the Overcurrent-Fault (OCF) feature of Allegro ACS37610 device can be used in application to reliably detect overcurrent conditions and how it can be configured to optimize accuracy and cover different application needs.

Brochure

Brochure: Innovative Current Sensor ICs

Allegro MicroSystems has been driving innovation in the current sensor industry for more than 17 years, with a history of first-to-market products that give our customers a competitive edge. Our advanced ICs help you achieve higher efficiency and power density in your designs.

Application Note

Guidelines for Designing a Busbar with Notch for Allegro's ACS37612 Differential Coreless Current Sensor

AN296188 - This application note offers guidelines for achieving optimum busbar and notch designs using the Allegro ACS37612 coreless current sensor

Application Note

Mitigating Interference while Measuring High Frequency, High Current Transient Responses

AN296155 - This application note will demonstrate techniques on how to avoid coupling the field from high-current transients onto the signal and power lines of current sensors in order to avoid a perceived distortion of the output.

Application Note

Material Selection and Geometry Considerations for High Current Sensing Magnetic Flux Concentrator Designs

AN296245 - Core material selection, geometry, and air gap dimensions will all impact the performance of the flux concentrator. This note will explain each of these factors and provide a detailed guide for design of a magnetic flux concentrator.