This is the compact version of a simple carrier for Allegro’s ACS72981KLRATR-150B3/150B5 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.2 mΩ) current path and a high 250 kHz bandwidth for fast response times.

We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS72981xLR Hall effect-based, electrically isolated current sensors; we therefore recommend careful reading of the ACS72981 datasheet before using this product. The following list details some of the sensor’s

Features:

  • Hall effect-based sensor with electrically isolated current path allows the sensor to be inserted anywhere along the current path and to be used in applications that require electrical isolation.
  • Differential Hall sensing rejects common-mode fields, so the orientation of the sensor relative to uniform external magnetic fields (e.g. the Earth’s magnetic field) has less effect on the measurement.
  • The conductive path internal resistance is typically 0.2 mΩ, and the PCB is made with 6 layers of 2-oz copper, so very little power is lost in the module.
  • High-bandwidth 250 kHz analog output voltage proportional to AC or DC currents
  • Less than 2 µs response time.
  • Integrated digital temperature compensation circuitry allows improved accuracy over the full operating temperature range.
  • Carrier boards, available in compact and large sizes, offer a variety of ways to insert it into the current path and 0.1″-pitch (breadboard compatible) power, ground, and output pins.
  • 3.3V and 5V versions available.

Unidirectional and bidirectional versions available.

Details for item 3.3 V:

This compact carrier features the ACS72981KLRATR-150B3, which is intended for nominal 3.3 V operation and is designed for bidirectional input current from -150 A to +150 A. This version can be visually distinguished from the other versions by the “3V3 B15” printed on the bottom side, as shown in the left picture above.

  • The sensor requires a supply voltage of 3.0 V to 3.6 V to be connected across the VCC and GND pads, which are labeled on the bottom silkscreen. The sensor outputs a ratiometric analog voltage on VIOUT that is centered at VCC/2 and changes by 8.8 mV × (VCC/3.3 V) per amp of input current, with positive current increasing the output voltage and negative current decreasing the output voltage:

VIOUT=VCC2+0.0088VA⋅VCC3.3V⋅IP=VCC⋅(12+IP375A)

IP=375A⋅(VIOUTVCC–12)

Details for item 5 V:

This compact carrier features the ACS72981KLRATR-150B5, which is intended for nominal 5 V operation and is designed for bidirectional input current from -150 A to +150 A. This version can be visually distinguished from the other versions by the “5V B15” printed on the bottom side, as shown in the left picture above.

  • The sensor requires a supply voltage of 4.5 V to 5.5 V to be connected across the VCC and GND pads, which are labeled on the bottom silkscreen. The sensor outputs a ratiometric analog voltage on VIOUT that is centered at VCC/2 and changes by 13.3 mV × (VCC/5 V) per amp of input current, with positive current increasing the output voltage and negative current decreasing the output voltage:

VIOUT=VCC2+0.0133VA⋅VCC5V⋅IP=VCC⋅(12+IP375A)

IP=375A⋅(VIOUTVCC–12)


The VIOUT, VCC, and GND pins work with 0.1″-pitch header pins and are compatible with standard solderless breadboards.

You can insert the board into your current path in a variety of ways. For typical high-current applications, you can solder wires directly to the through-holes that best match your wires, or you can use solderless ring terminal connectors, as shown in the pictures below. The largest through-holes are big enough for 8 AWG wires or #6 or M3.5 screws, and the second-largest through-holes (and mounting holes) are sized for 12 AWG wires or #2 or M2 screws. Holes with 0.1″, 3.5 mm, and 5 mm spacing are also available as shown in the diagram above for connecting male header pins or terminal blocks, but please note that these connection options will generally not be suitable for the kinds of high currents intended for this sensor.

Warning: This product is intended for use below 30 V. Working with higher voltages can be extremely dangerous and should only be attempted by qualified individuals with appropriate equipment and experience.

  • Sensitivity when Vcc = 3.3 V; sensitivity is ratiometric.
  • Sensitivity when Vcc = 5 V; sensitivity is ratiometric.
  • Bandwidth can be reduced by adding a filter capacitor.
  •  ±50A version uses 4-oz copper PCB; all other versions use 2-oz copper.

Package Includes:

  • 1 x Pololu 5257 / 5258 ACS72981KLRATR-150B3/150B3 Current Sensor Compact Carrier -150A to +150A, 3.3V/5V

Write a review

Please login or register to review

Pololu 5257 / 5258 ACS72981KLRATR-150B3/150B5 Current Sensor Compact Carrier -150A to +150A, 3.3V/5V

  • Brand: Pololu
  • Product Code:NR-Pololu-ACS72981KLRATR-150B
  • Reward Points:8
  • Availability:In Stock
  • रo 847.00

  • Price in reward points:847

  • 17 or more रo 840.00
  • 25 or more रo 798.00
  • 35 or more रo 791.00
  • 100 or more रo 753.00
  • 185 or more रo 747.00

Available Options


Related Products

Pololu 4043/4047/4048/4044/4040 ACS724 Current Sensor Carrier

Pololu 4043/4047/4048/4044/4040 ACS724 Current Sensor Carrier

This board is a simple carrier of Allegro’s bidirectional ±10A / ±30A/unidirectional 5A/20A /bidirec..

रo 978.00

Pololu 5253 / 5254 ACS72981LLRATR-100B3/B5 Current Sensor Compact Carrier -100A to +100A, 3.3V / 5V

Pololu 5253 / 5254 ACS72981LLRATR-100B3/B5 Current Sensor Compact Carrier -100A to +100A, 3.3V / 5V

We are offering these breakout boards with support from Allegro Microsystems as an easy way to use o..

रo 847.00

Pololu 5250 / 5251 ACS72981LLRATR-050B3 / 050B5 Current Sensor Compact Carrier -50A to +50A, 3.3V / 5V

Pololu 5250 / 5251 ACS72981LLRATR-050B3 / 050B5 Current Sensor Compact Carrier -50A to +50A, 3.3V / 5V

This is the compact version of a simple carrier for Allegro’s ACS72981LLRATR-050B3/B5 Hall effect-ba..

रo 847.00

Pololu 5259 ACS72981KLRATR-150U3 Current Sensor Compact Carrier 0A to 150A, 3.3V

Pololu 5259 ACS72981KLRATR-150U3 Current Sensor Compact Carrier 0A to 150A, 3.3V

This is the compact version of a simple carrier for Allegro’s ACS72981KLRATR-150U3 Hall effect-based..

रo 847.00

Pololu 5277 / 5278 ACS72981KLRATR-150B3/150B5 Current Sensor Large Carrier -150A to +150A, 3.3V / 5V

Pololu 5277 / 5278 ACS72981KLRATR-150B3/150B5 Current Sensor Large Carrier -150A to +150A, 3.3V / 5V

This is the large version of a simple carrier for Allegro’s ACS72981KLRATR-150B3/150B5 Hall effect-b..

रo 1,101.00

Pololu 5279 ACS72981KLRATR-150U3 Current Sensor Large Carrier 0A to 150A, 3.3V

Pololu 5279 ACS72981KLRATR-150U3 Current Sensor Large Carrier 0A to 150A, 3.3V

This is the large version of a simple carrier for Allegro’s ACS72981KLRATR-150U3 Hall effect-based, ..

रo 1,101.00

Tags: Pololu, Current Sensor, Carrier, 3.3V, 5V

The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.

Name
Email
Phone
Comments