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Hall-effect sensors offer adjustable bandwidth for current sensing

Worcester, Mass. — Allegro MicroSystems, Inc. has introduced a new family of fully programmable linear Hall-effect sensors with low noise and a very high bandwidth. The A1360/1/2 devices are well-suited for use in high-frequency automotive and industrial current sensing applications due to extremely low noise (as low as 8 mV (p-p)), flat temperature coefficient (0%/°C) and high-bandwidth capability (typically 50 kHz).

The accuracy of these devices is enhanced through the programmability on the output pin of 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 offers 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). Device specifications are guaranteed over an extended temperature range of -40°C to 150°C.

The devices are packaged in Allegro's 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.

Pricing: $1.28 in quantities of 1,000.
Availability: 14 to 16 weeks typical.
Product information: A136x

Allegro MicroSystems, Inc. , www.allegromicro.com

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