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High-Accuracy, Isolated Current Sensor with Differential Sensing

ACS724, ACS725

The ACS724/5 current sensors offer precise and stable current measurements in magnetically noisy environments, featuring differential sensing for common-mode rejection, galvanic isolation, and a wide operating temperature range. The ACS724 operates at 5V, while the ACS725 operates at 3.3V.

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Evaluation Boards

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Product Detail
Availability
Documentation and Resources

Top Features

Typical Applications

Packaging

AEC-Q100 qualified
Differential Hall sensing rejects common-mode fields
1.2 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
High-bandwidth 120 kHz analog output for faster response times in control applications
Filter pin allows user to filter the output for improved resolution at lower bandwidth
Patented integrated digital temperature compensation circuitry allows for near closed-loop accuracy over temperature in an open-loop sensor
Filter pin simplifies bandwidth limiting for better resolution at lower frequencies
5 V, single supply operation

Industrial Motor Control
DC/DC Converters
xEV Onboard Chargers (OBC)
Solar Inverters
Load Detection and Management
Switched Mode Power Supplies
Overcurrent Fault Protection

The ACS724/ACS725 devices are provided in small, low-profile surface-mount SOIC8 (LC) and custom SOIC16 packages (MA and MC). The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. The MA and LC packages offer high isolation voltage with a maximum nominal current of 50 A, while the MC (20 Mil) package offers up to 90 A nominal current measurement. These current ratings vary depending on the ambient operating temperatures.

LC Package Documentation

MA Package Documentation

MC Package Documentation

Part Number Specifications and Availability

ACS724 Product Overview

The Allegro ACS724 family of current sensor ICs are economical and precise solutions for AC or DC current sensing in industrial, automotive, consumer, and communications systems. They are offered in multiple compact packages with a high level of integration that fits various application needs.

Documentation and Resources

Documentation

Design Tools

Third Party Design Tools

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All Types Application Note Brochure Certificate FAQ Guide

Documents Found: 32

Document Type	Document Name
Application Note	How to Analyze and Compare Allegro Current Sensor and ADC Error Components
Application Note	Current Sensing in Motor Drives
Application Note	Techniques to Minimize Common-Mode Field Interference When Using Allegro Current Sensor ICs (ACS724 and ACS780)
Application Note	Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors
Application Note	Glossary of Isolation-Related Terms for Integrated Current Sensors
Brochure	Brochure: Driving Change by Advancing Personal Mobility Through Cutting-Edge Technology
Certificate	Certificate of Compliance 20200511-E316429
Certificate	CB Certificate US-32848-UL
Certificate	Certificate of Compliance 20190906-E316429
Certificate	CB Certificate US-32210-M3-UL
Certificate	CB Certificate US-35763-UL-60950-1
Certificate	Certificate CB US 36315 UL MA Package
Certificate	Certificate of Compliance 20160520 E316429
Certificate	Certificate CB US 35764 UL MC Package
Certificate	Certificate of Compliance 20181207-E316429
FAQ	Current Sensors FAQ
Guide	ACS724KMA Evaluation Board User Guide

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All Types Gerber File Hardware Kit or Board Simulation Tool SPICE Model Webpage

Documents Found: 32

Document Type	Document Name
Gerber File	ASEK724LC Gerber Files
Gerber File	ASEK724MA Gerber Files
Gerber File	ASEK725LC Gerber Files
Gerber File	ASEK725MA Gerber Files
Hardware Kit or Board	ASEK724LLC-30AB-T (Mouser)
Simulation Tool	Current Sensor Error and Resolution
SPICE Model	ACS LTspice Library
Webpage	Current Sensor Evaluation Boards Page

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All Types Third Party Tool

Documents Found: 32

Document Type	Document Name
Third Party Tool	Pololu Carrier Boards