Allegro MicroSystems

ACS714 Hall Effect Current Sensor

Allegro's ACS714 automotive grade, high accuracy Hall effect current sensor

Image of Allegro's ACS714The Allegro ACS714 provides economical and precise solutions for AC or DC current sensing in automotive systems. The device package allows for easy implementation by the customer. 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. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging.

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Image of Allegro MicroSystems' ACS714 - Automotive Grade, High Accuracy Hall-Effect Current Sensor Functional Block Diagram Image of Allegro MicroSystems' ACS714 - Automotive Grade, High Accuracy Hall-Effect Current Sensor Pin-Out Diagram Image of Allegro MicroSystems' ACS714 - Automotive Grade, High Accuracy Hall-Effect Current Sensor Typical Application Diagram
Features and Benefits
  • Low-noise analog signal path
  • Device bandwidth is set via the FILTER pin
  • 5 µs output rise time in response to step input current
  • 80 kHz bandwidth
  • Total output error 1.5% typical, at TA = 25°C
  • Small footprint, low-profile SOIC8 package
  • 1.2 mΩ internal conductor resistance
  • 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
  • 5.0 V, single supply operation
  • 66 to 185 mV/A output sensitivity
  • Output voltage proportional to AC or DC currents
  • Factory-trimmed for accuracy
  • Extremely stable output offset voltage
  • Nearly zero magnetic hysteresis
  • Ratiometric output from supply voltage
  • Operating temperature range, -40°C to 150°C

ACS714

ImageManufacturer Part NumberDescriptionAvailable QuantityPrice
SENSOR CURRENT HALL 5A AC/DCACS714LLCTR-05B-TSENSOR CURRENT HALL 5A AC/DC12878 - Immediate
1 : $4.26
Cut Tape (CT)
3000 : $2.67
Tape & Reel (TR)
1 : $4.26
Digi-Reel®
View Details
SENSOR CURRENT HALL 20A AC/DCACS714LLCTR-20A-TSENSOR CURRENT HALL 20A AC/DC4116 - Immediate
1 : $4.26
Cut Tape (CT)
3000 : $2.67
Tape & Reel (TR)
1 : $4.26
Digi-Reel®
View Details
Published: 2012-08-09

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