Linear hall-effect sensor IC designed with low noise and high resolution

Allegro MicroSystems, LLC (Worcester, MA) announces a new factory-programmable linear Hall-effect current sensor IC. Allegro’s A1366 has been designed to achieve high accuracy and resolution. The goal is achieved through new proprietary linearly interpolated temperature compensation technology that is programmed at the Allegro factory, which provides sensitivity and offset that are virtually flat across the full operating temperature range. The flat performance over temperature makes this IC ideally suited for current sensing applications. Temperature compensation is done in the digital domain with integrated EEPROM technology without sacrificing the analog signal path bandwidth. The A1366 high frequency operation was designed for HEV inverter, DC-to-DC converter, and electric power steering (EPS) applications, but can be used for any current sensing system requiring high bandwidth operation. Features include:

• A voltage output that is proportional to the applied magnetic field.
• High resolution providing an accuracy of less than ±1%, typical, over the full operating temperature range.
• An industry leading sensing resolution at the full 120 kHz bandwidth.
• An extended ambient temperature range of –40°C to 150°C.

For more information on the A1366, visit www.allegromicro.com.

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

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