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Current sensor IC Allegro ACS70331EOLCTR-005U3 with low resistance primary conductor and high speed analog output signal

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Current sensor IC Allegro ACS70331EOLCTR-005U3 with low resistance primary conductor and high speed analog output signal

working temperature : -40℃~+85℃

Current Range : 5A

Voltage - Supply : 3V~4.5V

Current Terminal Resistance : 1.7mΩ

Band Width : 1MHz

Response Time (tr) : 535ns

Sensitivity : 400mV/A

Description : 5A 400mV/A SOIC-8 Current Sensors RoHS

Mfr. Part # : ACS70331EOLCTR-005U3

Model Number : ACS70331EOLCTR-005U3

Package : SOIC-8

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Product Overview

The Allegro ACS70331 is a high-sensitivity, integrated current sensor IC designed for <5 A current sensing applications. Utilizing advanced Giant Magneto-Resistive (GMR) technology, it offers 25 times greater sensitivity than traditional Hall-effect sensors. This IC provides a low-noise, high-speed analog output proportional to the current flowing through its integrated low-resistance primary conductor. With a typical response time of 535 ns and a 1 MHz bandwidth, it is suitable for applications requiring fast and accurate current measurements. The ACS70331 is factory-programmed with four sensitivity and offset levels for optimized performance across various current ranges. Its differential GMR element configuration ensures significant rejection of stray magnetic fields, leading to stable operation in magnetically noisy environments. Operating from a single 3.3 V supply, it is qualified for the commercial temperature range of 40C to 85C and is available in space-saving QFN-12 and SOIC-8 surface-mount packages.

Product Attributes

Brand: Allegro
Technology: Giant Magneto-Resistive (GMR)
Package Types: QFN-12, SOIC-8

Technical Specifications

Feature/Model	Description	Value	Unit
General	High Sensitivity Current Sensor IC	Up to 5 A (DC or AC)
	Bandwidth	1	MHz
	Response Time	<550	ns
	Low Noise	8	mA(rms) @ 1 MHz
	Output Type	Non-ratiometric, Analog
	Supply Voltage	3.3	V
	Primary Conductor Resistance	1.1	m (QFN-12)
		1.7	m (SOIC-8)
Operating Conditions	Operating Temperature Range	-40 to 85	C
Absolute Maximum Ratings	Supply Voltage (VCC)	7	V
	Maximum Continuous Current (IP(max))	10	A
Package Details	QFN-12 Dimensions	3 mm 3 mm 0.75 mm
Selection Guide	ACS70331EESATR-2P5U3	Current Sensing Range: 0 to 2.5 A, Sensitivity: 800 mV/A, Package: 12-contact QFN
	ACS70331EESATR-2P5B3	Current Sensing Range: 2.5 A, Sensitivity: 400 mV/A, Package: 12-contact QFN
	ACS70331EESATR-005U3	Current Sensing Range: 0 to 5 A, Sensitivity: 400 mV/A, Package: 12-contact QFN
	ACS70331EESATR-5B3	Current Sensing Range: 5 A, Sensitivity: 200 mV/A, Package: 12-contact QFN
	ACS70331EOLCTR-2P5U3	Current Sensing Range: 0 to 2.5 A, Sensitivity: 800 mV/A, Package: 8-lead SOIC
	ACS70331EOLCTR-2P5B3	Current Sensing Range: 2.5 A, Sensitivity: 400 mV/A, Package: 8-lead SOIC
	ACS70331EOLCTR-005U3	Current Sensing Range: 0 to 5 A, Sensitivity: 400 mV/A, Package: 8-lead SOIC
	ACS70331EOLCTR-5B3	Current Sensing Range: 5 A, Sensitivity: 200 mV/A, Package: 8-lead SOIC
Electrical Characteristics	Supply Current (ICC)	4.5	mA (typical, no load)
	Power On Time (tPO)	5	s (typical)
	Fuse Power Down Time (tFPD)	80-120	s (typical)
Output Characteristics	Bandwidth (BW)	1	MHz (-3 dB)
	Response Time (tRESPONSE)	535	ns (typical)
	Input Referred Noise Density	8	ARMS/Hz
Accuracy	Total Output Error (ETOT) @ IPR(max), 25C	2	%
	Total Output Error (ETOT) @ IPR(max), -40 to 85C	3 to 5	% (model dependent)
	Sensitivity Error (Esens) @ IPR(max), 25C	1.1 to 1.5	% (model dependent)
	Offset Voltage (VOE) @ 0 A, 25C	8 to 37	mV (model dependent)
	Offset Voltage (VOE) @ 0 A, -40 to 85C	40 to 100	mV (model dependent)

2304140030_ALLEGRO-ACS70331EOLCTR-005U3_C2155535.pdf

Current sensor IC Allegro ACS70331EOLCTR-005U3 with low resistance primary conductor and high speed analog output signal Images

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