Galvanically Isolated Linear Current Sensor IC with High Accuracy and 2.4kVRMS Isolation

ACS712

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The ACS712 provides accurate and isolated current sensing for industrial and commercial applications, with 2.4kVRMS isolation, low noise, and a wide operating temperature range for robust performance.

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Top Features

Packaging

  • Low-noise analog signal path
  • Device bandwidth is set via the new FILTER pin
  • 5 µs output rise time in response to step input current
  • 80 kHz bandwidth
  • Total output error 1.5% 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

The ACS712 is provided in a small, surface mount SOIC8 package (suffix LC). The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the device is Pb-free, except for flip-chip high-temperature Pb-based solder balls, currently exempt from RoHS.

LC Package Documentation

Part Number Specifications and Availability

ACS712 Product Overview

Allegro has developed an innovative line of fully integrated current sensor ICs that offers several advantages over other current sensor solutions. These Allegro sensors are incredibly small and are offered in standard automotive qualified surface mount packages.

Documentation and Resources

Documentation

Design Tools