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High-Accuracy Current Sensor with Dual Fault Detection and Galvanic Isolation

ACS720

ACS720 Product Image

The ACS720 provides precise current measurement with dual fault detection (short-circuit and overcurrent) and galvanic isolation, making it suitable for motor control and power inverter applications.

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Top Features

Packaging

  • Differential current sensing cancels common mode fields, simplifying PCB layout
  • Two user-settable faults for fast short-circuit protection and slower overcurrent detection
  • Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
  • Patented integrated digital temperature compensation circuitry allows high accuracy over temperature in an open loop sensor
  • 1.0 mΩ primary conductor resistance for low power loss and high inrush current-withstanding capability
  • Small footprint, low-profile SOIC16 package suitable for space-constrained applications
  • Integrated shield virtually eliminates capacitive coupling from current conductor to die due to high dV/dt voltage transients
  • 5 V single supply operation with 0-3 V output swing
  • Output voltage proportional to AC or DC current
  • Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
  • 3600 Vrms Dielectric Strength certified under UL60950-1
  • High PSRR for noisy environments

The ACS720 is provided in a small surface-mount SOIC16 package. 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. 

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Part Number Specifications and Availability

Documentation and Resources

Documentation

Design Tools

Filter Document Type:
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All Types Application Note Certificate FAQ
Documents Found: 32
Document Type Document Name
Application Note
An Effective Method for Characterizing System Bandwidth in Complex Current Sensor Applications
Application Note
Achieving Closed-Loop Accuracy in Open-Loop Current Sensors
Application Note
Techniques to Minimize Common-Mode Field Interference When Using Allegro Current Sensor ICs (ACS724 and ACS780)
Application Note
Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors
Application Note
Glossary of Isolation-Related Terms for Integrated Current Sensors
Certificate
Certificate of Compliance 20160520 E316429
Certificate
CB Certificate US 23711 A2 UL
FAQ
Current Sensors FAQ
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All Types Gerber File Simulation Tool User Guide Webpage
Documents Found: 32
Document Type Document Name
Gerber File
ASEK720 Gerber Files
Simulation Tool
Current Sensor Error and Resolution
User Guide
ASEK720 Evaluation Kit User Guide
Webpage
Current Sensor Evaluation Boards Page