FEATURES AND BENEFITS
• 360° contactless high-resolution angle position sensor
• CVH (Circular Vertical Hall) technology
• Available with either a single die or dual independent die housed within a single package
• Digital output format selectable among SPI, I2C, and SENT (Single-Edge Nibble Transmission)
• SENT output is SAEJ2716 JAN2010 compliant, with Allegro proprietary enhanced programmable features
• Customer-programmable SENT tick times, ranging from 0.5 to 7.9 µs
• SPI interface allows use of multiple independent sensor ICs for applications requiring redundancy
• Refresh rate: 32 µs, 12-bit resolution
• Wide range of diagnostics enable automotive applications to achieve ASIL-D compliance
• Programmable via Manchester encoding on the VCC line, reducing external wiring
• Automotive temperature range: –40°C to 150°C
• AEC-Q100 automotive qualified
• Two types of linearization algorithms offered: harmonic linearization and segmented linearization □ Enables off-axis operation
DESCRIPTION
The A1335 is a 360° contactless high-resolution programmable magnetic angle position sensor IC. It is designed for digital systems and is capable of communicating via an I2C, SPI, or SENT interface.
This system-on-chip (SoC) architecture includes a front end based on Circular Vertical Hall (CVH) technology, programmable microprocessor-based signal processing, and features an interface capable of supporting I2C, SPI, and SENT. Besides providing full-turn angular measurement, the A1335 also provides scaling for angle measurement applications less than 360°. It includes on-chip EEPROM technology, capable of supporting up to 100read/write cycles, for flexible programming of calibration parameters.
Digital signal processing functions, including temperature compensation and gain/offset trim, as well as advanced output linearization algorithms, provide an extremely accurate and linear output for both end-of-shaft applications as well as off-axis applications.
The A1335 is ideal for automotive applications requiring highspeed 360° angle measurements, such as: electronic power steering (EPS), transmission, torsion bar, and other systems that require accurate measurement of angles. The A1335 linearization schemes were designed with challenging off-axis applications in mind.
The A1335 is available as a single die in a 14-pin TSSOP, or dual die in a 24-pin TSSOP. Both packages are lead (Pb) free with 100% matte-tin leadframe plating.
(Picture:Pinout / Diagram)
