Site
Map • Contact
Us 中文 • English
High-Performance Power ICs and Hall-Effect Sensors
Allegro MicroSystems, Inc. Replaces Unipolar Switch
Family for Improved Performace and Additional Packaging Options 
Worcester, MA, June 9, 2005 — Allegro MicroSystems, Inc. introduces the A110x family, which is intended not only to replace our legacy A314x and A312x families of unipolar switches with improved performance, but also to offer our customers a wider variety of packaging options. Additionally, for the first time with our continuous-time unipolar switch family, Allegro is offering an option for Pb-free plating to comply with various international standards.
Allegro's A1101/02/03/04/06 Hall-effect switches, produced with BiCMOS technology, consist of devices that feature fast power-on time and low noise operation. Device programming is performed after packaging to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset amplifiers help to minimize noise and reduce the residual offset voltage normally caused by device overmolding, temperature excursions and thermal stress.
The A110x Hall-effect switches include the following on a single silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor. The integrated voltage regulator permits operation from 3.8 to 24 V. The extensive on-board protection circuitry makes possible a ±30 V absolute maximum voltage rating for superior protection in automotive and industrial motor commutation applications, without adding external components. All devices in the family are identical except for magnetic switchpoints.
New packaging selections for this product line offer customers more options in design, while an extended temperature range is available for automotive and industrial markets. Targeted to the consumer, computer/office, industrial and automotive markets, the A110x family is provided in a three-pin single in-line package (UA) and a three-pin surface-mount package (LH).
Allegro MicroSystems, Inc. is a supplier of advanced mixed-signal power semiconductors and Hall-effect sensors targeted toward the automotive, communications, computer/office automation, consumer and industrial markets. It maintains a leadership position in the integrated magnetic sensor and integrated motor driver product segments. With over 2,000 employees, Allegro is headquartered in Worcester, MA. Further information about Allegro, including free samples of our products, can be found at www.allegromicro.com.
Editorial Contact:
Stephanie Fennelly
Director – Marketing Communications
Tel: (508) 854-5363
sfennelly@allegromicro.com