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quality Allegro ACS70331EESATR 005U3 GMR Current Sensor IC for Precise Measurement of Currents up to 5 Amperes factory
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quality Allegro ACS70331EESATR 005U3 GMR Current Sensor IC for Precise Measurement of Currents up to 5 Amperes factory
quality Allegro ACS70331EESATR 005U3 GMR Current Sensor IC for Precise Measurement of Currents up to 5 Amperes factory
quality Allegro ACS70331EESATR 005U3 GMR Current Sensor IC for Precise Measurement of Currents up to 5 Amperes factory
>
Specifications
working temperature:
-40℃~+85℃
Current Range:
5A
Voltage - Supply:
3V~4.5V
Band Width:
1MHz
Current Terminal Resistance:
1.1mΩ
Response Time (tr):
535ns
Sensitivity:
400mV/A
Mfr. Part #:
ACS70331EESATR-005U3
Package:
QFN-12(3x3)
Key Attributes
Model Number: ACS70331EESATR-005U3
Product Description

Product Overview

The Allegro ACS70331 is a highly sensitive, 1 MHz GMR-based current sensor IC designed for <5 A current sensing applications. It leverages advanced giant magneto-resistive (GMR) technology, offering 25 times greater sensitivity than traditional Hall-effect sensors. This enables precise measurement of magnetic fields generated by currents flowing through its low-resistance integrated primary conductor. The sensor provides a low-noise, high-speed analog output proportional to the current, with a typical response time of 535 ns. It is available in four factory-programmed sensitivity and offset levels to optimize performance across various current measurement ranges. The differential GMR element configuration ensures significant rejection of stray magnetic fields, leading to stable operation in noisy environments. The ACS70331 operates from a single 3.3 V supply and is qualified for the commercial temperature range of 40C to 85C. It is offered in space-saving, low-profile QFN-12 and SOIC-8 surface-mount packages.

Product Attributes

  • Brand: Allegro
  • Technology: Giant Magneto-Resistive (GMR)
  • Status: Not for New Design (restricted to existing customer applications)

Technical Specifications

Model Current Sensing Range (IPR) Sensitivity (Typ) (mV/A) Temperature Range (C) Package Primary Conductor Resistance (Typ) Bandwidth Response Time (Typ) Supply Voltage
ACS70331EESATR-2P5U3 0 to 2.5 A 800 -40 to 85 12-contact QFN 1.1 m (QFN-12) 1 MHz <550 ns 3.3 V
ACS70331EESATR-2P5B3 2.5 A 400 -40 to 85 12-contact QFN 1.1 m (QFN-12) 1 MHz <550 ns 3.3 V
ACS70331EESATR-005U3 0 to 5 A 400 -40 to 85 12-contact QFN 1.1 m (QFN-12) 1 MHz <550 ns 3.3 V
ACS70331EESATR-005B3 5 A 200 -40 to 85 12-contact QFN 1.1 m (QFN-12) 1 MHz <550 ns 3.3 V
ACS70331EOLCTR-2P5U3 0 to 2.5 A 800 -40 to 85 8-lead SOIC 1.7 m (SOIC-8) 1 MHz <550 ns 3.3 V
ACS70331EOLCTR-2P5B3 2.5 A 400 -40 to 85 8-lead SOIC 1.7 m (SOIC-8) 1 MHz <550 ns 3.3 V
ACS70331EOLCTR-005U3 0 to 5 A 400 -40 to 85 8-lead SOIC 1.7 m (SOIC-8) 1 MHz <550 ns 3.3 V
ACS70331EOLCTR-005B3 5 A 200 -40 to 85 8-lead SOIC 1.7 m (SOIC-8) 1 MHz <550 ns 3.3 V
Key Features:
  • High sensitivity current sensor IC for sensing up to 5 A (DC or AC)
  • 1 MHz bandwidth with response time <550 ns
  • Low noise: 8 mA(rms) at 1 MHz
  • Non-ratiometric, analog output proportional to AC and DC current
  • Single 3.3 V supply operation
  • High DC PSRR enables use with low accuracy power supplies or batteries (3 to 4.5 V operation)
  • 1.1 m primary conductor resistance results in low power loss
  • Small surface mount QFN-12 and SOIC-8 packages for space-constrained applications
Absolute Maximum Ratings:
  • Supply Voltage (VCC): 7 V
  • Working Voltage (VWORKING): 100 V
  • Maximum Continuous Current (IP(max)): 10 A
  • Nominal Operating Ambient Temperature (TA Range): 40 to 85 C

2404151029_ALLEGRO-ACS70331EESATR-005U3_C459297.pdf

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