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Precise current sensing ALLEGRO ACS723KMATR-40AB-T sensor with low offset and minimal power dissipation

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Precise current sensing ALLEGRO ACS723KMATR-40AB-T sensor with low offset and minimal power dissipation

working temperature : -40℃~+125℃

Current Range : 40A

Voltage - Supply : 4.5V~5.5V

Band Width : 80kHz

Current Terminal Resistance : 0.85mΩ

Response Time (tr) : 5us

Sensitivity : 50mV/A

Bidirectional Current Detection : Support

Description : 40A 50mV/A SOIC-16W Current Sensors RoHS

Mfr. Part # : ACS723KMATR-40AB-T

Model Number : ACS723KMATR-40AB-T

Package : SOIC-16W

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Product Overview

The Allegro ACS723 current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, commercial, and communication systems. Its small, low-profile SOIC16 package is ideal for space-constrained applications, reducing board area and costs. The device features a precise, low-offset, linear Hall sensor circuit with a low-resistance copper conduction path (0.85 m typical) for minimal power loss. Device accuracy is optimized by the close proximity of the magnetic field to the Hall transducer, enhanced by patented digital temperature compensation for stable performance over temperature. The output voltage is proportional to the primary sensed current, with a positive slope when current flows from pins 1-4 to pins 5-8. The electrically isolated terminals of the conductive path from sensor leads enable high-side current sensing without costly isolation techniques. Key applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.

Product Attributes

Brand: Allegro
Certifications: UL60950-1 (ed. 2) certified, CB Certificate Number: US-32210-M1-UL, TV America Certificate Number: U8V 16 03 54214 040, CB 16 03 54214 039
Package: 16-pin SOICW (suffix MA)
Leadframe Plating: 100% matte tin
Material Compliance: Pb-free internally (except for flip-chip high-temperature Pb-based solder balls, currently exempt from RoHS)

Technical Specifications

Characteristic	Model	Value	Units	Notes
Current Sensing Range	ACS723KMATR-10AB	10	A
Sensitivity (Typ.)	ACS723KMATR-10AB	200	mV/A	at VCC = 5.0 V
Current Sensing Range	ACS723KMATR-20AB	20	A
Sensitivity (Typ.)	ACS723KMATR-20AB	100	mV/A	at VCC = 5.0 V
Current Sensing Range	ACS723KMATR-40AB	40	A
Sensitivity (Typ.)	ACS723KMATR-40AB	50	mV/A	at VCC = 5.0 V
Primary Conductor Resistance (Typ.)	ACS723	0.85	m	at TA = 25C
Supply Voltage	ACS723	4.5 to 5.5	V	Single supply operation
Supply Current (Typ.)	ACS723	9	mA	at VCC = 5V
Bandwidth (BW_SEL tied to GND)	ACS723	80	kHz	Pin-selectable, high bandwidth
Bandwidth (BW_SEL tied to VCC)	ACS723	20	kHz	Pin-selectable, low noise
Dielectric Strength Voltage	ACS723	4.8	kVrms	UL60950-1 (ed. 2)
Basic Isolation Working Voltage	ACS723	1097	Vrms	UL60950-1 (ed. 2)
Reinforced Isolation Working Voltage	ACS723	565	Vrms	UL60950-1 (ed. 2)
Operating Ambient Temperature	ACS723	-40 to 125	C
Junction Temperature (Max)	ACS723	165	C
Package Thermal Resistance (Junction to Ambient)	ACS723	23	C/W	Mounted on Allegro 85-0738 evaluation board
Package Thermal Resistance (Junction to Lead)	ACS723	5	C/W	Mounted on Allegro ASEK 723 evaluation board
Total Output Error (Typ.)	ACS723KMATR-10AB	1.4	%	IP = IPR(max), TA = 25C to 125C
Total Output Error (Typ.)	ACS723KMATR-20AB	1.3	%	IP = IPR(max), TA = 25C to 125C
Total Output Error (Typ.)	ACS723KMATR-40AB	0.8	%	IP = IPR(max), TA = 25C to 125C

2404151029_ALLEGRO-ACS723KMATR-40AB-T_C459321.pdf

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