
Replace the Shunt
Discover Allegro’s magnetic current sensors to make your design challenges easier
Technology advancements and the evolution of magnetic current sensors over the last two decades have made them a compelling alternative to traditional shunt-based current sensing circuits. With greater efficiency and isolation, higher bandwidths, smaller size and improved overall performance, engineers and designers can quickly and easily integrate these sensors into their electronic systems.
Packaging Innovation: Designers and engineers face the ongoing challenge of creating electronic systems that are both compact and energy-efficient. Allegro's innovative packages, featuring integrated shunt-less sensor solutions, directly address this challenge. By eliminating the need for external shunt resistors and other discrete components, designers and engineers can achieve significant reductions in both component count and overall circuit size while improving efficiency.
- Compact design: The integrated magnetic current sensors are significantly smaller, saving valuable board space and reducing the number of components on the bill of materials.
- Lower heat dissipation: The lower conductor resistance of integrated magnetic current sensors’ lead frames result in cooler system temperatures.
- Simplified design process: By integrating the functionality of a traditional shunt resistor circuit into a single package, Allegro’s technology simplifies component placement and streamlines the design process.
Related Content

Video: ACS37220 Product Overview
The ACS37220 is a magnetic current sensor designed to replace high-power sense resistors in high-current monitoring applications requiring an isolation voltage below 100V. Compared to shunts, this device provides a smaller footprint, higher efficiency and simpler integration.

Article: Overcoming Size Challenges in PCB Design with Magnetic Current Sensors
Magnetic current sensors provide a compact and efficient alternative to traditional current measurement techniques that significantly reduce the size of components on PCBs, crucial for space-constrained electronic designs.

Article: Next-Generation Current Measurement: Addressing PCB Design Challenges with Magnetic Current Sensors
Introducing the Next-Generation Current Measurement Series: Advanced magnetic current sensors accurately detect magnetic fields generated by current flow, offering precise current level measurements.
ACS37220
Image | Manufacturer Part Number | Description | For Measuring | Sensor Type | Current - Sensing | Available Quantity | View Details | |
---|---|---|---|---|---|---|---|---|
![]() | ![]() | ACS37220LEZATR-100B3 | CURRENT SENSOR HE 100A 7-QFN | DC | Hall Effect | 100A | 3262 - Immediate | View Details |
![]() | ![]() | ACS37220LEZATR-100B5 | CURRENT SENSOR HE 100A 7-QFN | DC | Hall Effect | 100A | 4708 - Immediate | View Details |
![]() | ![]() | ACS37220LEZATR-150B3 | CURRENT SENSOR HE 100A 7-QFN | DC | Hall Effect | 100A | 4194 - Immediate | View Details |
![]() | ![]() | ACS37220LEZATR-150B5 | CURRENT SENSOR HE 150A 7-QFN | DC | Hall Effect | 150A | 5855 - Immediate | View Details |
![]() | ![]() | ACS37220LEZATR-200B5 | CURRENT SENSOR HE 200A 7-QFN | DC | Hall Effect | 200A | 4037 - Immediate | View Details |
ACS711
Image | Manufacturer Part Number | Description | For Measuring | Sensor Type | Current - Sensing | Available Quantity | View Details | |
---|---|---|---|---|---|---|---|---|
![]() | ![]() | ACS711ELCTR-12AB-T | CURRENT SEN HE/OL 12.5A 8-SOIC | AC/DC | Hall Effect, Open Loop | 12.5A | 15316 - Immediate | View Details |
![]() | ACS711KEXLT-30AU-T | CURRENT SENSOR HE 30A 12-QFN | AC/DC | Hall Effect | 30A | 0 - Immediate | View Details | |
![]() | ![]() | ACS711KEXLT-31AB-T | CURRENT SENSOR HE/OL 31A 12-QFN | AC/DC | Hall Effect, Open Loop | 31A | 75430 - Immediate | View Details |
![]() | ![]() | ACS711KLCTR-12AB-T | CURRENT SEN HE/OL 12.5A 8-SOIC | AC/DC | Hall Effect, Open Loop | 12.5A | 19390 - Immediate | View Details |
![]() | ![]() | ACS711KLCTR-25AB-T | CURRENT SENSOR HE/OL 25A 8-SOIC | AC/DC | Hall Effect, Open Loop | 25A | 52 - Immediate | View Details |
![]() | ![]() | ACS711KEXLT-15AB-T | CURRENT SEN HE/OL 15.5A 12-QFN | AC/DC | Hall Effect, Open Loop | 15.5A | 49569 - Immediate | View Details |
![]() | ACS711KLCTR-25AU-T | CURRENT SENSOR HE 25A 8-SOIC | AC/DC | Hall Effect | 25A | 0 - Immediate | View Details |
ACS7140
Image | Manufacturer Part Number | Description | For Measuring | Sensor Type | Current - Sensing | Available Quantity | View Details | |
---|---|---|---|---|---|---|---|---|
![]() | ![]() | ACS71240KEXBLT-010B3 | CURRENT SENSOR HE/OL 10A 12-QFN | AC/DC | Hall Effect, Open Loop | 10A | 8625 - Immediate | View Details |
![]() | ![]() | ACS71240LLCBTR-010B3 | CURRENT SENSOR HE/OL 10A 8-SOIC | AC/DC | Hall Effect, Open Loop | 10A | 8410 - Immediate | View Details |
![]() | ![]() | ACS71240LLCBTR-030B3 | CURRENT SENSOR HE/OL 30A 8-SOIC | AC/DC | Hall Effect, Open Loop | 30A | 6286 - Immediate | View Details |
![]() | ![]() | ACS71240KEXBLT-050U5 | CURRENT SENSOR HE/OL 50A 12-QFN | AC/DC | Hall Effect, Open Loop | 50A | 3778 - Immediate | View Details |
![]() | ![]() | ACS71240LLCBTR-045B5 | CURRENT SENSOR HE/OL 45A 8-SOIC | AC/DC | Hall Effect, Open Loop | 45A | 9968 - Immediate | View Details |
![]() | ![]() | ACS71240LLCBTR-050U5 | CURRENT SENSOR HE/OL 50A 8-SOIC | AC/DC | Hall Effect, Open Loop | 50A | 3117 - Immediate | View Details |
![]() | ![]() | ACS71240KEXBLT-010B3-115 | CURRENT SENSOR HE/OL 10A 12-QFN | AC/DC | Hall Effect, Open Loop | 10A | 5503 - Immediate | View Details |
![]() | ![]() | ACS71240KEXBLT-030B3 | CURRENT SENSOR HE/OL 30A 12-QFN | AC/DC | Hall Effect, Open Loop | 30A | 28479 - Immediate | View Details |
![]() | ![]() | ACS71240KEXBLT-030B5 | CURRENT SENSOR HE/OL 30A 12-QFN | AC/DC | Hall Effect, Open Loop | 30A | 8819 - Immediate | View Details |
![]() | ![]() | ACS71240LLCBTR-020U5 | CURRENT SENSOR HE/OL 20A 8-SOIC | AC/DC | Hall Effect, Open Loop | 20A | 1714 - Immediate | View Details |
Eval Boards
Image | Manufacturer Part Number | Description | Sensor Type | Sensing Range | Interface | Available Quantity | View Details | |
---|---|---|---|---|---|---|---|---|
![]() | ![]() | ACSEVB-EZ7-37220-100B3 | EVAL BOARD FOR ACS37220 100B3 | Current Sensor | ±100A | Analog | 5 - Immediate | View Details |
![]() | ![]() | ACSEVB-EZ7-37220-100B5 | EVAL BOARD FOR ACS37220 100B5 | Current Sensor | ±100A | Analog | 9 - Immediate | View Details |
![]() | ![]() | ACSEVB-EZ7-37220-150B3 | EVAL BOARD FOR ACS37220 150B3 | Current Sensor | ±150A | Analog | 9 - Immediate | View Details |
![]() | ![]() | ACSEVB-EZ7-37220-150B5 | EVAL BOARD FOR ACS37220 150B5 | Current Sensor | ±150A | Analog | 3 - Immediate | View Details |
![]() | ![]() | ACSEVB-EZ7-37220-200B5 | EVAL BOARD FOR ACS37220 200B5 | Current Sensor | ±200A | Analog | 4 - Immediate | View Details |
![]() | ![]() | ACSEVB-LC8-LZ6 | EVALUATION BARE BOARD | Current Sensor | - | Analog | 25 - Immediate | View Details |
![]() | ![]() | ACSEVB-EX12 | EVALUATION BARE BOARD | Current Sensor | - | Analog | 29 - Immediate | View Details |
![]() | ![]() | MIKROE-2987 | HALL CURRENT 2 CLICK | mikroBUS™ Click™ | Sensor | Magnetic Hall Effect | 1 - Immediate | View Details |
![]() | ![]() | MIKROE-6464 | HALL CURRENT 20 CLICK | mikroBUS™ Click™ | Sensor | Current | 13 - Immediate | View Details |