Allegro Announces New Low-Noise 2100Vrms Hall-Effect Current Sensors

Allegro MicroSystems Inc. introduced two new high performance low noise 2100Vrms isolation current sensors. Allegro's new current sensors – ACS712 (bidirectional) and ACS713 (unidirectional) – provide lower noise and higher accuracy than previous generation current sensors. These sensors also include an integrated shield, which effectively attenuates high dV/dt transients across the leadframe making this solution idea for motor control and high side current sense applications.

The response time of these sensors has improved by over two times of previous devices making it suitable for protection and high-speed applications. Additionally a filter pin has been added to further reduce output noise and improve low current accuracy without the attenuation effects of an external RC filter.

Targeted at the consumer and industrial markets, both sensors are offered in Allegro's SOIC8 package and have an 8-10 week lead-time to market. Both the ACS712 and ACS713 are priced at $1.61 (company correction from $1.29 price published on 12-19-06) in quantities of 1,000.