1. Allegro MicroSystems has introduced a 4 x 4mm QFN current sensor, ACS37220, capable of measuring up to ±200A with bidirectional capabilities. 2. The sensor offers multiple versions with varying sensitivity and operation voltage options. 3. It features a digitally calibrated and compensated analogue signal chain, with a bandwidth of 150kHz and accuracy within ±3.1% over a wide temperature range.