We are offering these breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their ACS71240 Hall effect-based, electrically isolated current sensors with overcurrent fault output. 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) does not affect the measurement.
- The conductive path internal resistance is typically 0.6 mΩ, and the PCB is made with 2-oz copper, so very little power is lost in the module.
- High 120 kHz bandwidth for fast response times in control applications.
- Less than 5 µs response time.
- Output is not ratiometric (i.e. the zero point and sensitivity are independent of the actual supply voltage), which provides immunity from noisy supplies.
- Overcurrent fault output with 1.5 µs response time indicates when the current exceeds the optimized sensing range and can be used for fast short-circuit detection.
- 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 125°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.
- 3.3V and 5V versions available.
- Unidirectional and bidirectional versions available.
The following table lists the available ACS71240 carrier options:
ACS71240 Current Sensor Carriers |
|
Pololu Item # |
Part Suffix |
Supply Voltage |
Current Range |
Sensitivity |
Zero Point |
#5240 |
010B3 |
3.0 V to 3.6 V (3.3 V nominal) |
Bidirectional |
±10 A |
132 mV/A |
1.65 V |
#5241 |
030B3 |
±30 A |
44 mV/A |
#5242 |
050B3 |
±50 A |
26.4 mV/A |
#5243 |
010B5 |
4.5 V to 5.5 V (5 V nominal) |
±10 A |
200 mV/A |
2.5 V |
#5244 |
030B5 |
±30 A |
66 mV/A |
#5245 |
050B5 |
±50 A |
40 mV/A |
#5246 |
050U5 |
Unidirectional |
0-50 A |
80 mV/A |
0.5 V |
Alternatives available with variations in these parameter(s):
current range
Select variant…
Compare all products in this category
Products in category “ACS71240 Current Sensor Carriers”
This board is a simple carrier of Allegro’s ACS71240KEXBLT-010B3 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
010B3 |
±10 A (bidirectional) |
3.0 V to 3.6 V |
132 mV/A |
1.65 V |
±10 A |
This board is a simple carrier of Allegro’s ACS71240KEXBLT-030B3 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
030B3 |
±30 A (bidirectional) |
3.0 V to 3.6 V |
44 mV/A |
1.65 V |
±30 A |
This board is a simple carrier of Allegro’s ACS71240KEXBLT-050B3 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
050B3 |
±50 A (bidirectional) |
3.0 V to 3.6 V |
26.4 mV/A |
1.65 V |
±50 A |
This board is a simple carrier of Allegro’s ACS71240KEXBLT-010B5 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
010B5 |
±10 A (bidirectional) |
4.5 V to 5.5 V |
200 mV/A |
2.5 V |
±10 A |
This board is a simple carrier of Allegro’s ACS71240KEXBLT-030B5 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
030B5 |
±30 A (bidirectional) |
4.5 V to 5.5 V |
66 mV/A |
2.5 V |
±30 A |
This board is a simple carrier of Allegro’s ACS71240KEXBLT-050B5 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
050B5 |
±50 A (bidirectional) |
4.5 V to 5.5 V |
40 mV/A |
2.5 V |
±50 A |
This board is a simple carrier of Allegro’s ACS71240KEXBLT-050U5 Hall effect-based, electrically isolated current sensor, which offers a low-resistance (~0.6 mΩ) current path and a high 120 kHz bandwidth for fast response times.
Part Suffix |
Range |
Supply Voltage |
Sensitivity |
Zero Point |
Fault Trip Level |
050U5 |
0-50 A (unidirectional) |
4.5 V to 5.5 V |
80 mV/A |
0.5 V |
50 A |
Expired Coupon
The coupon BF24C312 is no longer valid.
Close