ACS714 current sensor -30A to + 30A - Pololu 1187*

Current sensor working in the range of +/-30 A, based on the Hall effect. The output is an analog voltage. Supply voltage is from 4.5 V to 5.5 V.

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Price 44,90 zł

Product description: current sensor ACS714

The module consists of a printed circuit board made for the system Allegro ACS714LLCTR-05B-T. The sensor operates based on the Hall effect. The chip can be powered from a voltage in the range: 4.5 V to 5.5 V.

Connection method of the current sensor ACS714

The sensor requires a supply voltage in the range from 4.5 V to 5 V, connected to the pins designated as VCC (+) and GND (ground). The output is a voltage signal proportional to the intensity of the measured current. When the voltage VCC is equal to 5 V, the output is centered on the half, that is 2.5 V. The output value increases by 66 mV at 1 A when the strength of the measured current is positive, otherwise, it decreases.

Czujnik prądu ACS714

The main characteristics of the current sensor ACS714

  • The system is designed for current flowing in both directions (from -30A to 30A)
  • Due to the low resistance of the system (1.2 mΩ) and channeling, the power losses are very small.
  • Through the use of Hall effect, the current paths are isolated from the logic part.
  • The bandwidth is up to 80 kHz with the possibility of reduction by adding an additional condenser
  • Precision of 1.5% at room temperature.

Additional filtering

The chip has an internal resistance filter of 1.7 kΩ, the board has the condenser with the value of 1nF, which together form a low pass filter with cut-off frequency of 90 kHz. The user can change the filter when the capacitor is output onis called "filter". The limit frequency can be calculated by the formula:


F = 1 / (2πRC) = 1 / (11kΩ * (1 nF + Cf))


where Cf is the capacitance of the capacitor soldered into the "filter" pins.


Schemat podłączenia czujnika prądu ACS714

Technical characteristics of the current sensor ACS714

  • Supply voltage of the logic part: 4.5 V to 5.5 V
  • Current consumption of the logic part: 13 mA
  • Sensitivity for power supply of 5 V: 0,066 V/A
  • Weight of the module - 1.3 g
  • Dimensions: 18 x 20.5 mm



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Poczta Polska

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9,90 PLN17,90 PLN1-3 days

Kurier GLS

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14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
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  • The delivery period is counted in working days from the date of dispatch of the order.