ACS724 and ACS725: High-Accuracy, Isolated Current Sensor ICs with Stray Field Rejection

Description

The Allegro ACS724/ACS725 family of current sensor ICs are economical and precise solutions for AC or DC current sensing in industrial, automotive, consumer, and communications systems. They are offered in multiple compact packages that offer high level of integration that fits various applications needs.. These devices consist 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. The current is sensed differentially in order to reject stray fields, improving accuracy in magnetically noisy environments. The current conductor is inherently isolated from the device signal leads due to it’s internal structure which results in high isolation voltage rating for the various offered packages. All of these devices offer very low ohmic losses as low as 265 µΩ.

The ACS724/ACS725 devices are provided in small, low-profile surface-mount SOIC8 (LC) and  custom SOIC16 packages (MA & MC). The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. 

The MA & LC packages offer high Isolation voltage with a max nominal current of 50A, while the MC (20Mil) package offers up to 90A nominal current measurement. These current ratings vary depending on the ambient operating temperatures.

Typical Applications:

  • Motor control
  • DC/DC Converters
  • xEV onboard chargers (OBC)
  • Solar inverters
  • Load detection and management
  • Switched mode power supplies
  • Overcurrent fault protection
     

Top Features

  • AEC-Q100 qualified 
  • Differential Hall sensing rejects common-mode fields
  • 1.2 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
  • Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
  • Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
  • High-bandwidth 120 kHz analog output for faster response times in control applications
  • Filter pin allows user to filter the output for improved resolution at lower bandwidth
  • Patented integrated digital temperature compensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor
  • Small footprint, low-profile SOIC8 package suitable for space-constrained applications
  • Filter pin simplifies bandwidth limiting for better resolution at lower frequencies
  • 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

Packaging

8-Pin SOIC (suffix LC) 16-Pin SOICW (suffix MA) 16-Pin SOICW (suffix MC)

Allegro SOIC LC Package Allegro-16-Pin-SOICW-MA-Package 16-pin-SOICW-MC-Package

 

LC Package .stp Model                                               MA Package .stp Model



Allegro MicroSystems, LLC provides Gerber files for reference only. Any material, information, or instructions are provided AS IS without warranty of any kind. It is the responsibility of the User(s) to optimize any Printed Circuit Board (PCB) layout, as well as the selection of any components, for the specific application of the User(s).

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
ACS724LMATR-20AB-T 16-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMATR-30AB-T 16-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMATR-50AB-T 16-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724KMATR-12AB-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724KMATR-20AB-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724KMATR-30AB-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724KMATR-30AU-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724KMATR-65AB-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ASEK724KMA-20AB-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK724KMA-30AB-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK724KMA-30AU-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-05AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-05AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-10AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-10AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-20AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-20AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-30AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LLCTR-30AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
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ACS724LLCTR-50AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
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ACS724LMATR-30AU-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMATR-50AU-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMATR-65AB-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMCTR-20AB-T 16-lead SOIC -40°C to 150°C -- View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMCTR-30AB-T 16-lead SOIC -40°C to 150°C -- View Data Contact your
local sales rep
Check
Distributor Stock
ACS724LMCTR-65AB-T 16-lead SOIC -40°C to 150°C -- View Data Contact your
local sales rep
Check
Distributor Stock
ASEK724LLC-10AB-T DEMO BOARD -40°C to 150°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK724LLC-20AB-T DEMO BOARD -40°C to 150°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK724LLC-20AU-T DEMO BOARD -40°C to 150°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK724LLC-30AB-T DEMO BOARD -40°C to 150°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK724LLC-30AU-T DEMO BOARD -40°C to 150°C No -- Contact your
local sales rep
Check
Distributor Stock
ACS725KMATR-20AB-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725KMATR-30AB-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725KMATR-30AU-T 16-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ASEK725LLC-10AU-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK725LLC-20AB-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor Stock
ASEK725LLC-40AB-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-05AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-10AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-10AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-20AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-20AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-30AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LLCTR-30AU-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
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ACS725LLCTR-40AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
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ACS725LLCTR-50AB-T 8-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LMATR-20AB-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LMATR-30AB-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LMATR-30AU-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LMATR-50AB-T 16-lead SOIC -40°C to 150°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
ACS725LMCTR-20AB-T 16-lead SOIC -40°C to 150°C -- View Data Contact your
local sales rep
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Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.