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

Index: PLL-00524 EAN: 5904422365844

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

ACS714 current sensor -30A to + 30A - Pololu 1187
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Discontinued product
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ACS714 current sensor - amperage:
Manufacturer: Pololu


The product has been discontinued. Check other products in category.

Connection of the ACS714 current sensor

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

Main features of the ACS714 current sensor

  • The system is designed for the current flowing in both directions (from -30 A to 30 A)
  • Due to the low resistance of the system (1.2 mΩ) and the connections, the power losses are very small.
  • Thanks to the use of the Hall effect, the current paths are isolated from the logical part.
  • Bandwidth up to 80kHz with the possibility of reduction by adding an optional capacitor
  • Precision of 1.5% at room temperature.
Czujnik prądu ACS714

Additional filtration

The integrated circuit has an internal 1.7 kΩ resistive filter, there is a 1 nF capacitor on the board, which together forms a low pass filter with a cutoff frequency of 90 kHz. The user can modify the filter by installing a capacitor in the pinscalled "filter". The cut-off frequency can be calculated from the formula:

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

whereCfis the capacity of the soldered capacitor in the "filter" pins.

Schemat podłączenia czujnika prądu ACS714

Specification of the ACS714 current sensor

  • Logic supply voltages: 4.5 V to 5.5 V
  • Current consumption of the logical part: 13 mA
  • Sensitivity for 5V power supply: 0.066V / A
  • Module weight 1.3 g
  • Dimensions: 18 x 20.5 mm
Package width 7.5 cm
Package height 0.3 cm
Package depth 8.5 cm
Package weight 0.002 kg

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