# ACS72981ELRATR-200B3 Current Sensor Large Carrier -200A to +200A, 3.3V

**Type:** Product page · **SKU:** POLOLU-5281 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/acs72981-current-sensor-large-carrier-200a-3-3v.html ([markdown](https://core-electronics.com.au/acs72981-current-sensor-large-carrier-200a-3-3v.html.md))

This is the large version of a simple carrier for Allegro’s ACS72981ELRATR-200B3 Hall effect-based, electrically isolated current sensor, which offers a...

## Pricing

- **Price:** $28.40 (inc GST) — $25.82 AUD, exc GST
- **Quantity discounts:** 10+ $24.78 (exc GST) · 25+ $24.01 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 28 and Aug 31.

## Description

| ![](https://core-electronics.com.au/attachments/localcontent/0J12515_12614e74732.jpg) |
|---|

| [![](https://core-electronics.com.au/attachments/localcontent/0J12590_4036749100a.jpg)](https://core-electronics.com.au/attachments/localcontent/0J12590_3547755b95d.jpg) |
|---|
| ACS72981 Current Sensor Compact Carrier (top) and Large Carrier (bottom) size comparison. |

Pololu 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; Pololu therefore recommend careful reading of the [ACS72981 datasheet](https://core-electronics.com.au/attachments/localcontent/acs72981-datasheet_398758c5124.pdf) before using this product. The following list details some of the sensor’s key 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 mO, 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 along with 0.1"-pitch (breadboard-compatible) power, ground, and output pins.
- 3.3V and 5V versions available.
- Unidirectional and bidirectional versions available.

The connection points are labeled on the bottom silkscreen. The silkscreen also shows the direction that is interpreted as positive current flow via the **+i** arrow.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/P/O/POLOLU-5281-1.jpg)