Within 4 x 4 mm QFN package, DRV421 features fully integrated fluxgate sensor and compensation coil driver as well as all required signal conditioning circuitry. Integration helps designers develop magnetic closed-loop current sensors, while built-in closed-loop magnetic core degaussing procedure and offset calibration increase dynamic range up to 6 decades. Overall sensor accuracy is <0.1%, and design allows 3.3 V operation.