The ACS37220EZ Series from Allegro MicroSystems are Automotive-Grade Current Sensor ICs designed for accurate current measurement in automotive applications. These transducers require a supply voltage of 3.3-5 V and can measure a current of 200 A. These sensors have an ultra-low primary conductor resistance of less than 100 μΩ that ensures to handle high inrush currents. They utilize differential Hall effect technology, which effectively rejects common-mode magnetic fields, providing optimized performance in the presence of external magnetic fields.

These transducers offer fast response time and are suitable for precise control applications. They include a user-configurable overcurrent fault output for rapid short-circuit detection, enhancing system protection. These current sensors have patented digital temperature compensation ensuring stable performance across varying conditions. They are available in surface-mount packages that measure 4 x 4 mm.