We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS724LLCTR Hall effect-based linear current sensors. The following list details some of the sensor’s key features:
- 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.
- Use of a Hall effect sensor means the IC is able to electrically isolate the current path from the sensor’s electronics, which allows the sensor to be inserted anywhere along the current path and to be used in applications that require electrical isolation.
- High-bandwidth 120 kHz analog output voltage proportional to AC or DC currents.
- 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 and 0.1″-pitch (breadboard compatible) power, ground, and output pins.
They operate from 4.5 V to 5.5 V and are intended for use in 5 V systems.
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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 linear 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 linear 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 linear 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 linear 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 linear 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 linear 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 linear 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 linear 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 linear 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 linear 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 |
