Allegro MicroSystems, Inc. Announces a New Family of Extremely Low Noise,with a User Adjustable Bandwidth for High Current Sensing

Worcester, MA ¨C March 17, 2008 ¡ª Allegro® announces a new family of linear Hall-effect sensors that are fully programmable with low noise and a very high bandwidth. The A1360/1/2 devices are ideally suited for use in high frequency, current sensing applications due to the extremely low noise (as low as 8 mV (p-p)), flat temperature coefficient (0%/¡ãC) and high bandwidth capability (typically 50 kHz). These devices also boast Allegro¡¯s first 1 mm thin, 4-lead SIP (KT-package), which allows for extremely small gaps in various concentrator and C-core systems to improve the signal-to-noise ratio and sensitivity.

The accuracy of these devices is enhanced through the programmability on the output pin of
download hi-res image the device. A capacitor to ground on the Filter Pin of the A136x can be used to tune the device bandwidth in a range from 50 kHz to less than 100 Hz. These ratiometric Hall-effect sensors provide a voltage output that is proportional to the applied magnetic field. The quiescent output voltage is user adjustable to 50% (bidirectional) or 10% (unidirectional) of the supply voltage (VCC). Each device has a guaranteed, programmable, sensitivity range: 0.7 to 1.4 mV/G (A1360), 1.5 to 4.5 mV/G (A1361) and 4.5 to 16 mV/G (A1362).

The features of this linear Hall-effect family make these sensors ideal for high accuracy requirements in automotive and industrial current sensing applications. Device specifications are guaranteed over an extended temperature range, -40¡ãC to 150¡ãC.

Allegro¡¯s A1360/61/62 devices are supplied in a thin 4-lead SIP (KT) package.

About Allegro

Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance power integrated circuits and integrated Hall-effect magnetic sensors. 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.

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