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New 360° contactless high-resolution programmable magnetic angle position sensor IC

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The A1335 from Allegro MicroSystems Europe is a new 360° contactless high-resolution programmable magnetic angle position sensor IC designed for use in digital systems in automotive and related applications involving rotating shaft sensing.

The new device has a system-on-chip (SoC) architecture with a front end based on circular vertical Hall technology and programmable microprocessor-based signal processing. It supports multiple communication interfaces including I2C, SPI (Serial Peripheral Interface), and SENT (Single Edge Nibble Transmission).

In addition to providing 360° angular measurement, the A1335 also provides two options for on-chip linearisation: harmonic linearisation to handle applications that require side-shaft magnetic configurations; and segmented linearisation for scaling angle measurement applications requiring less than 360° of motion (so-called “short stroke” applications). It also includes on-chip EEPROM technology, capable of supporting up to 100 read/write cycles, for flexible programming of calibration parameters.

In addition to the advanced output linearisation algorithms, other digital signal processing functions include temperature compensation and gain/offset trim, helping to provide an extremely accurate and linear output for both end-of-shaft applications and challenging off-axis or side-shaft applications.

The A1335 is ideal for automotive applications requiring high-speed 360° angle measurements, such as electronic power steering, transmission, torsion bar, and other systems that require accurate measurement of angles.

The A1335 is available as a single die in a 14-pin TSSOP package or a dual die in a 24-pin TSSOP package. Both packages are lead (Pb) free with 100% matt-tin leadframe plating.

Please click here to download a copy of the A1335 position sensor IC data sheet.

About Allegro
Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro’s innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centers located worldwide. Further information about Allegro can be found at www.allegromicro.com.

Allegro MicroSystems Europe, headquartered in Chertsey, United Kingdom, is the European sales and marketing operation, and operates a network of representatives and distributors throughout Europe.  Allegro also has an engineering design centre in Edinburgh in Scotland and an application and marketing centre in Annecy in France.

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