Allegro MicroSystems, Inc. Introduces Low-Cost, Field-Programmable Linear Hall-Effect Sensor ICs

Worcester, MA, February 1, 2005 — Allegro MicroSystems, Inc. announces the release of the A1373 and A1374, output-pin programmable linear Hall-effect sensor ICs. With a three-lead SIP package, lower output noise, and programming on the output pin, these devices will complement Allegro's existing portfolio of standard analog output Hall-effect sensor ICs by offering a low-cost option for field programmability.

The A1373/4 devices are one-time field-programmable linear Hall-effect sensor ICs with low-noise ratiometric outputs, intended to allow the user greater flexibility from design concept to release to production. Very precise over temperature and voltage, the chopper stabilization technique used in the Hall element provides low initial offset and minimal drift over temperature.

The A1373 and A1374 are programmable on the output pin, eliminating potential conflicts during programming that could occur when high-voltage spikes are coupled onto Vcc where some discrete components may reside. As field-programmable devices, the user is allowed to set the gain, quiescent voltage output, and the temperature coefficient after finished sensor assembly. Programming post-assembly minimizes the effects of manufacturing-induced stresses and offsets.

Targeted at the automotive and industrial markets, the A1373 and A1374 are available in a three-lead single inline package developed with wider lead spacing to ease soldering to the leads. The difference between the two devices is bandwidth: the A1374 has slighter higher bandwidth and thus slightly higher noise on the output.

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