Hall-Effect-Based Current Sensor
Description
ACS724KMA
High-Accuracy, Hall-Effect-Based Current Sensor IC with Common-Mode Field Rejection in High-Isolation SOIC16 Package
FEATURES AND BENEFITS
• Differential Hall sensing rejects common-mode fields • Patented integrated digital temperature compensation
circuitry allows for near closed loop accuracy over temperature in an open loop sensor • UL60950-1 (ed.
2) certified □ Dielectric Strength Voltage = 4.
8 kVRMS □ Basic Isolation Working Voltage = 1097 VRMS □ Reinforced Isolation Working Voltage = 565 VRMS • Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques • Filter pin allows user to filter output for improved resolution at lower bandwidth • 0.
85 mΩ primary conductor resistance for low power loss and high inrush current withstand capability • Low-profile SOIC16 package suitable for spaceconstrained applications • 4.
5 to 5.
5 V single supply operation • Output voltage proportional to AC or DC current
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TÜV America Certificate Number: U8V 16 03 54214 040 CB 16 03 54214 039
CB Certificate Number: US-32210-M1-UL
PACKAGE: 16-pin SOICW (suffix MA)
Not to scale
DESCRIPTION
The Allegro™ ACS724KMA current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, commercial, and communication systems.
The small package is ideal for space-constrained applications while also saving costs due to reduced board area.
Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.
The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die.
Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage.
The current is sensed differentially in order to reject common-mode fields, impro...
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