341185 1185 - ACS714 Current Sensor Carrier -5 to +5A

1185 - ACS714 Current Sensor Carrier -5 to +5A

This board is a simple carrier of Allegro’s ±5A ACS714 Hall effect-based linear current sensor, which offers a low-resistance (~1.2 mΩ) current path and electrical isolation up to 2.1 kV RMS. This version accepts a bidirectional current input with a magnitude up to 5 A and outputs a proportional analog voltage (185 mV/A) centered at 2.5 V with a typical error of ±1.5%. It operates from 4.5 to 5.5 V and is intended for use in 5 V systems.
Categories
Prices are VAT included
€9.08 Price
€7.44 + VAT

Qty
 

Details

 

This board is a simple carrier of Allegro’s ±5A ACS714 Hall effect-based linear current sensor, which offers a low-resistance (~1.2 mΩ) current path and electrical isolation up to 2.1 kV RMS. This version accepts a bidirectional current input with a magnitude up to 5 A and outputs a proportional analog voltage (185 mV/A) centered at 2.5 V with a typical error of ±1.5%. It operates from 4.5 to 5.5 V and is intended for use in 5 V systems.

This current sensor is a carrier board or breakout board for Allegro’s ACS714LLCTR-05B-T Hall effect-based linear current sensor; we therefore recommend careful reading of the ACS714 datasheet before using this product. The sensor operates at 5 V and has an output sensitivity of 185 mV/A. The board ships fully populated with its SMD components, including the ACS714, as shown in the product picture. The following list details some of the sensor’s key features:

  • Designed for bidirectional input current from -5 to 5 A (though the robust sensor IC can survive up to five times the overcurrent condition).
  • Conductive path internal resistance is typically 1.2 mΩ, and the PCB is made with 2-oz copper, so very little power is lost in the board.
  • Use of a Hall effect sensor means the IC is able to electrically isolate the current path from the sensor’s electronics (up to 2.1 kV RMS), which allows the sensor to be inserted anywhere along the current path and to be used in applications that require electrical isolation.
  • 80 kHz bandwith that can optionally be decreased by adding a capacitor across the board pins marked “filter”.
  • High accuracy and reliability: typical total output error of ±1.5% at room temperature with factory calibration, an extremely stable output offset voltage, and almost zero magnetic hysteresis.
  • Automotive-grade operating temperature range of -40°C to 150°C.

The pads are labeled on the bottom silkscreen, as shown in the picture below. The silkscreen also shows the direction that is interpreted as positive current flow via the +i arrow. This sensor ships assembled with all of its required surface mount components, as shown in the main product picture. We sell a 30A unidirectional version and ±30A bidirectional version version of this board; you can distinguish these versions by reading the text on the IC or by looking at the color of the X on the bottom silkscreen. This version is marked with a blue X.

 

Electrical connections

The sensor requires a supply voltage of 4.5 – 5.5 V to be connected across the Vcc and GND pads, which are labeled on the bottom silkscreen. The sensor outputs an analog voltage that is linearly proportional to the input current. When Vcc is 5 V, this output voltage is centered at 2.5 V and changes by 185 mV per amp of input current, with positive current increasing the output voltage and negative current decreasing the output voltage.

The input current can be connected to the board in a variety of ways. For low-current applications, you can solder 0.1" male header pins to the board via the small through-holes on the input-current side of the board. For higher-current applications, you can solder wires directly to the through-holes whose sizes best match your wires, or you can use solderless ring terminal connectors, as shown in the picture below. The large through-holes are big enough for #6 screws. Connection example (terminals not included):

 

Mounting information

The board has two mounting holes on the logic side of the board. These mounting holes are 0.5" apart and are designed for #2 screws.

Filtering the output

The IC has an internal filter resistance of 1.7 kΩ, and the carrier board includes a 1 nF filter capacitor, which produces a low-pass RC filter with a 90 kHz cutoff. You can improve sensing system accuracy for low-frequency sensing applictations by adding a capacitor in parallel with the integrated 1 nF capacitor across the pads marked “filter” on the bottom silkscreen (this capacitor is labeled C2b in the schematic below). The frequency F that the filter will attenuate to half its original power is given by:

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

where Cf is the value of the capacitor added to the filter pads.

Schematic diagram

Documents and Downloads

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.

Questions on 1185 - ACS714 Current Sensor Carrier -5 to +5A

No questions asked yet

Register or Login to ask a question.
Register or Login to ask a question.
  1. 1122 - 30 Amp Current Sensor AC&DC

    191122 1122 - 30 Amp Current Sensor AC&DC

    The 1122 measures AC current up to 30 Amps and DC Current from -30Amps to +30Amps. Dual outputs allow the user to measure botfalse
    Excl. Tax:
    €33.93
    Incl. Tax:
    €41.39
      Compare
  2. ACS712 Current Sensor Breakout

    708882 ACS712 Current Sensor Breakout

    Questo modulo implementa il sensore di corrente ad Effetto di Hall ACS712. Il sensore restituisce una precisa misura per segnfalse
    Excl. Tax:
    €6.41
    Incl. Tax:
    €7.82
      Compare
  3. SparkFun Low Current Sensor Breakout - ACS712

    708883 SparkFun Low Current Sensor Breakout - ACS712

    The ACS712 current sensor measures up to 5A of DC or AC current.
    Excl. Tax:
    €8.98
    Incl. Tax:
    €10.96
      Compare
  4. 2199 - ACS709 Current Sensor Carrier -75 to +75A

    342199 2199 - ACS709 Current Sensor Carrier -75 to +75A

    This board is a simple carrier of Allegro’s ±75A ACS709 Hall effect-based linear current sensor with overcurrent fault outputfalse
    Excl. Tax:
    €8.11
    Incl. Tax:
    €9.89
      Compare
  5. 1187 - ACS714 Current Sensor Carrier -30 to +30A

    341187 1187 - ACS714 Current Sensor Carrier -30 to +30A

    This board is a simple carrier of Allegro’s ±30A ACS714 Hall effect-based linear current sensor, which offers a low-resistancfalse
    Excl. Tax:
    €6.68
    Incl. Tax:
    €8.15
      Compare
  6. Non-Invasive Current Sensor - 30A

    711005 Non-Invasive Current Sensor - 30A

    This non-invasive current sensor (also known as a "split core current transformer") can be clamped around the supplfalse
    Excl. Tax:
    €9.63
    Incl. Tax:
    €11.75
      Compare
  7. INA169 Analog DC Current Sensor Breakout - 60V 5A Max

    501164 INA169 Analog DC Current Sensor Breakout - 60V 5A Max

    This breakout board will solve all your current-monitoring problems. Instead of struggling with a multimeter, you can just usfalse
    Excl. Tax:
    €9.25
    Incl. Tax:
    €11.29
      Compare
  8. INA169 Current Sensor Breakout

    712040 INA169 Current Sensor Breakout

    The INA169 is a “high-side current monitor,” which means that you place a resistor (a “shunt resistor”) on the positive powerfalse
    Excl. Tax:
    €6.74
    Incl. Tax:
    €8.22
      Compare

Price Match



* Required Fields