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ACS37030 Current Sensor Carriers
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ACS37030 Current Sensor Compact Carrier (top) and Large Carrier (bottom) size comparison. |
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We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS37030 DC to 5 MHz bandwidth, galvanically isolated, high-accuracy current sensors with reference output. The following list details some of the sensor’s key features:
- 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.
- High bandwidth (DC to 5 MHz) analog voltage output proportional to the current.
- 40 ns typical response time.
- Two current signal paths:
- Hall effect-based sensor for capturing DC and low-frequency current information
- Inductive coil for capturing high-frequency current information.
- 0.7 mΩ primary current path resistance in the sensor IC, and the PCB is made with 2-layer (compact versions) or 6-layer (large versions) 2-oz copper, so very little power is lost in the module.
- 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.
- Output is not ratiometric (i.e. the zero point and sensitivity are independent of the actual supply voltage), which provides immunity from noisy supplies.
- VREF output for pseudo-differential signaling in noisy application environments.
- Integrated digital temperature compensation circuitry allows improved accuracy over the full operating temperature range.
- Automotive-grade operating temperature range of -40°C to 150°C.
- 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.
The following table lists the available ACS37030 carrier options:
| Pololu Item # |
Part Suffix | Current Range |
Sensitivity (mV/A) |
Size | PCB Details |
Price | |
|---|---|---|---|---|---|---|---|
 Compact Carrier |
#5230 | 020B3 | ±20 A | 66 | 0.7″×0.8″ | 2 layers, 2-oz copper |
$7.95 |
| #5232 | 065B3 | ±65 A | 20.3 | ||||
 Large Carrier |
#5235 | 065B3 | ±65 A | 20.3 | 1.4″×1.2″ | 6 layers, 2-oz copper |
$10.95 |
Alternatives available with variations in these parameter(s): current range Select variant…
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Products in category “ACS37030 Current Sensor Carriers”
| Pololu item #: 5230 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
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This is the compact version of a simple carrier for Allegro’s ACS37030LLZATR-020B3 electrically isolated current sensor that uses two signal paths—Hall effect and inductive coil—to capture both low-frequency and high-frequency information. This allows for a DC through 5 MHz bandwidth and typical response times of 40 ns.
| Part Suffix | Range | Supply Voltage | Sensitivity | Zero Point | Size | PCB layers |
|---|---|---|---|---|---|---|
| 020B3 | ±20 A (bidirectional) | 3 V to 3.6 V | 66 mV/A | 1.65 V | 0.7″×0.8″ | 2 |
| Pololu item #: 5232 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This is the compact version of a simple carrier for Allegro’s ACS37030LLZATR-065B3 electrically isolated current sensor that uses two signal paths—Hall effect and inductive coil—to capture both low-frequency and high-frequency information. This allows for a DC through 5 MHz bandwidth and typical response times of 40 ns.
| Part Suffix | Range | Supply Voltage | Sensitivity | Zero Point | Size | PCB layers |
|---|---|---|---|---|---|---|
| 065B3 | ±65 A (bidirectional) | 3 V to 3.6 V | 20.3 mV/A | 1.65 V | 0.7″×0.8″ | 2 |
| Pololu item #: 5235 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This is the large version of a simple carrier for Allegro’s ACS37030LLZATR-065B3 electrically isolated current sensor that uses two signal paths—Hall effect and inductive coil—to capture both low-frequency and high-frequency information. This allows for a DC through 5 MHz bandwidth and typical response times of 40 ns.
| Part Suffix | Range | Supply Voltage | Sensitivity | Zero Point | Size | PCB layers |
|---|---|---|---|---|---|---|
| 065B3 | ±65 A (bidirectional) | 3 V to 3.6 V | 20.3 mV/A | 1.65 V | 1.4″×1.2″ | 6 |
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