IC enables precise current sensing in fast control loops

Allegro Microsystems’ ACS37017 Hall-effect current sensor achieves 0.55% typical sensitivity error across temperature and lifetime. High accuracy, a 750‑kHz bandwidth, and a 1‑µs typical response time make the ACS37017 suitable for demanding control loops in automotive and industrial high-voltage power conversion.

Unlike conventional sensors whose accuracy suffers from drift, the ACS37017 delivers long-term stability through a proprietary compensation architecture. This technology maintains precise measurements, ensuring control loops remain stable and efficient throughout the operating life of the vehicle or power supply.

The ACS37017 features an integrated non-ratiometric voltage reference, simplifying system architecture by eliminating the need for external precision reference components. This integration reduces BOM costs, saves board space, and removes a major source of system-level noise and error.

The high-accuracy ACS37017 expands Allegro’s current sensor portfolio, complementing the ACS37100 (optimized for speed) and the ACS37200 (optimized for power density). Request the preliminary datasheet and engineering samples on the product page linked below.

ACS37017 product page

Allegro Microsystems

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