Allegro Releases New Family of Chopper-Stabilized Precision, Hall-Effect Sensor ICs

June 8, 1999 - Allegro MicroSystems, Inc. announces the release of a new family of high temperature, precision, chopper-stabilized Hall-effect switches and latches. The A3240 switch, and the A3280 latch are extremely temperature-stable and stress-resistant sensor ICs designed to operate over extended temperature ranges to +150°C. The improved performance is made possible by a patented, chopper-stabilization technique that reduces offset drift caused by temperature and stress and allows for extremely sensitive switch points.

A3240 is a sensitive Hall-effect, unipolar switch. It provides solid state reliability and for low coast industrial, Automotive and Sensing applications. Applications include position sensing, in Automobiles and appliances such as door openings, limit switches, proximity sensing or any other sensor IC application using a single magnet. This highly sensitive device allows designers to utilize lower cost magnets.

The A3280 are sensitive Hall-effect latches. They are designed for circuits that require sensitive switch points at large air gaps. Typical applications are motor commutation (brushless DC motors), speed sensing, direction detection and liquid flow meters.

The A3240 and A3280 are offered in Allegro's new surface mount SOHED™ package, which fits a standard SC59 footprint. These devices are also offered in surface mount SOT89 and a through board "UA" package.

About Allegro

Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance power and Hall-effect sensor integrated circuits. Allegro's innovative solutions serve high-growth applications within the automotive, communications, computer/office automation, consumer and industrial markets. Allegro is headquartered in Worcester, Massachusetts (USA) with design and applications centers located in North and South America, Asia, and Europe. Further information about Allegro can be found at www.allegromicro.com.

Editorial Contact:
Stephanie Fennelly
Director - Marketing Communications
Tel: (508) 854-5363
sfennelly@allegromicro.com