Allegro MicroSystems Europe has added a high-accuracy version Hall-effect current sensor to its range. The ACS754/5 Series provide a smaller, lower-cost alternative to toroid-based sensors, and offer economical and precise current sensing in industrial, consumer, communications and automotive systems, it claims. The ACS754 devices are bi-directional sensors, while the AC755 versions offer single-direction sensing with approximately twice the resolution of the bi-directional ACS754s.
Accuracy at 25°C is better than 1%, and the worst-case accuracy over the devices' whole measurement and temperature ranges is 5-6% in industrial applications and 7-10% in extended temperature automotive applications.
The devices provide 3 kV isolation and single voltage supply operation while placing only 100 mΩ of resistance in the current path. Versions rated at 50, 100, 130, 150 and 200 A are available in both industrial and automotive temperature ranges.
The sensors are supplied in a lead-free, PC-mountable package measuring 14 x 22 x 7 mm overall. The current path is integrated into the package, so that there is no need for the user to design the magnetic circuit or thread the conductor through the device in manufacturing.
For more information contact Simon Churches, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]
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