We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS724LLCTR Hall effect-based, electrically isolated current sensors. 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 1.2 mΩ, and the PCB is made with 2-oz or 4-oz copper, depending on the sensor version, so very little power is lost in the module.
- High-bandwidth 120 kHz analog output voltage proportional to AC or DC currents.
- Typical 4 µs response time.
- Optional FILTER pin simplifies bandwidth limiting for better noise reduction and improved resolution at lower frequencies.
- Integrated digital temperature compensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor.
- Automotive-grade operating temperature range of -40°C to 150°C.
- 0.7″×0.8″ carrier board offers a variety of ways to insert it into the current path along with 0.1″-pitch (breadboard-compatible) power, ground, and output pins.
- Unidirectional and bidirectional versions available.
They operate from 4.5 V to 5.5 V and are intended for use in 5 V systems.
Alternatives available with variations in these parameter(s):
current range
Select variant…
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Products in category “ACS724 Current Sensor Carriers”
This board is a simple compact carrier of Allegro’s ACS724LLCTR-2P5AB Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 2P5AB |
±2.5 A (bidirectional) |
800 mV/A |
2.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-05AU Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 05AU |
0-5 A (unidirectional) |
800 mV/A |
0.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-05AB Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 05AB |
±5 A (bidirectional) |
400 mV/A |
2.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-10AU Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 10AU |
0-10 A (unidirectional) |
400 mV/A |
0.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-10AB Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 10AB |
±10 A (bidirectional) |
200 mV/A |
2.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-20AU Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 20AU |
0-20 A (unidirectional) |
200 mV/A |
0.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-20AB Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 20AB |
±20 A (bidirectional) |
100 mV/A |
2.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-30AU Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 30AU |
0-30 A (unidirectional) |
133 mV/A |
0.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-30AB Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 30AB |
±30 A (bidirectional) |
66 mV/A |
2.5 V |
4.5 V to 5.5 V |
This board is a simple compact carrier of Allegro’s ACS724LLCTR-50AB Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~1.2 mΩ) current path and a high 120 kHz bandwidth for fast response times.
| Part Suffix |
Range |
Sensitivity @ 5 V |
Zero Point @ 5 V |
Supply Voltage |
| 50AB |
±50 A (bidirectional) |
40 mV/A |
2.5 V |
4.5 V to 5.5 V |
