ACS712 Current Sensor Max 20Amp

  • Product Code: 264
  • Availability: 7
  • Rs.253.70 (inc GST)

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ACS712 Current Sensor 

Hall effect current Sensor with Maximum rating of 20 Ampere

The Allegro™ ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial,and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switch mode power supplies, and over current fault protection. The device is not intended for automotive applications.


The device consists of a precise, low-offset, linear Hall 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 the Hall IC converts 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.

Allegro ACS712 current Sensor device which provides an economical and precise way of sensing AC and DC currents based on Hall-effect. This is a breakout board for the fully integrated Hall Effect based linear ACS712 current sensor. The sensor gives precise current measurement for both AC and DC signals. Thick copper conductor and signal traces allows for survival of the device up to 5 times over current conditions.Compatible with arduino and since its output is analog it can be directly interfaced to PIC controllers, AVR & ARM processors as well.

The ACS712 outputs an analog voltage output signal that varies linearly with sensed current. The device requires 5 Volt DC for VCC and a couple of filter capacitors. Please keep in mind that though the ACS712 is rated for 2.1kV isolation, the PCB it is on is not designed for that type of voltage. Please keep that in mind if you are using this breakout in high voltage applications.


Features and Benefits

  • 5 μs output rise time in response to step input current
  • 80 kHz bandwidth
  • Total output error 1.5% at TA = 25°C
  • 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
  • 100 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


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