High-Accuracy, Galvanically Isolated Current Sensor IC with Pin-Selectable Bandwidth

ACS723

The ACS723 provides precise current measurements for AC or DC current, featuring pin-selectable bandwidth (80kHz or 20kHz), galvanic isolation, and a small footprint for space-constrained applications. Operates at 3.3V.

Datasheets

Evaluation Board

Top Features

Packaging

Patented integrated digital temperature compensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor
UL60950-1 (ed. 2) certified
- Dielectric Strength Voltage
  - ACS723LLC: 2.4 kVrms
  - ACS723KMA: 4.8 kVrms
- Basic Isolation Working Voltage
  - ACS723LLC: 420 Vpk or VDC / 297 Vrms
  - ACS723KMA: 1550 Vpk / 1097 Vrms or VDC
- Reinforced Isolation Working Voltage
  - ACS723KMA: 800 Vpk / 565 Vrms or VDC
Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
Pin-selectable band width: 80 kHz for high bandwidth applications or 20 kHz for low noise performance.
Primary conductor resistance for low power loss and high inrush current withstand capability
- ACS723LLC: 0.65 mΩ
- ACS723KMA: 0.85 mΩ
Packages:
- ACS723LLC: Small footprint, low-profile SOIC8 package suitable for space-constrained applications
- ACS723KMA: Low-profile SOIC16 wide-body package suitable for space-constrained, high isolation applications
ACS723LLC: Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
4.5 to 5.5 V, single supply operation
Output voltage proportional to AC or DC current
Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
Chopper stabilization results in extremely stable quiescent output voltage
Nearly zero magnetic hysteresis
Ratiometric output from supply voltage

The ACS723 is provided in a small, low profile surface mount SOIC8 package or the higher isolation surface mount SOIC16W wide body 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.

LC Package Documentation

MA Package Documentation

Documentation and Resources

Documentation

Design Tools

Third Party Design Tools

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All Types Application Note Certificate

Documents Found: 32

Document Type	Document Name
Application Note	Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors
Certificate	Certificate CB US 42876 UL LC Package
Certificate	CB Certificate US-32848-UL
Certificate	Certificate of Compliance 20190906-E316429
Certificate	CB Certificate US-32210-M3-UL
Certificate	Certificate CB US 36315 UL MA Package
Certificate	Certificate of Compliance 20181207-E316429

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All Types Gerber File Simulation Tool SPICE Model Webpage

Documents Found: 32

Document Type	Document Name
Gerber File	ASEK723LC Gerber Files
Gerber File	ASEK723MA Gerber Files
Simulation Tool	Current Sensor Error and Resolution
SPICE Model	ACS LTspice Library
Webpage	Current Sensor Evaluation Boards Page

Mikroe Demoboards

PWR Meter 3 Demo Board

Hall Current 6 Click is a very accurate current measurement Click board™, based on the ACS723 IC. This IC is a galvanically isolated current sensor, which utilizes the Hall-effect principle. Its most distinctive feature is its very low series resistance of only 0.65 mΩ, which makes this device a nearly-perfect ammeter.

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