High accuracy current sensors based on AMR technology

ACEINNA MCx1101 family of ±5A, ±20A and ±50A AMR-based current sensors for industrial and power supply applications provide high accuracy and wide bandwidth. Fully integrated, bi-directional devices deliver much higher dc accuracy and dynamic range compared with alternative solutions. For example, the ±20A version has a typical accuracy of ±0.6% and are guaranteed to achieve an accuracy of ±2.0% (max) at 85°C. Devices also guarantee an offset of ±60mA, or ±0.3% of FSR (max) over temperature, which means that high accuracy can be achieved over a roughly 10:1 range of currents. This is a roughly 10x improvement in dynamic range vs. leading Hall-sensor-based devices.