A1332: Precision Hall Effect Angle Sensor IC with I²C Interface

The A1332 is a 360° contactless high resolution programmable magnetic angle position sensor IC. It is designed for digital systems using an I²C interface.

This system-on-chip (SoC) architecture includes a front end based on Circular Vertical Hall (CVH) technology, programmable microprocessor based signal processing, and digital I²C interface. Besides providing full-turn angular measurement, the A1332 also provides scaling for angle measurement applications less than 360°. It includes on-chip EEPROM technology 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 A1332 is ideal for automotive applications requiring high speed 360° angle measurements, such as: electronic power steering (EPS), transmission, torsion bar, and other systems that require accurate measurement of angles. The A1332 linearization schemes were designed with challenging off-axis applications in mind.

The device is offered in a 14-pin TSSOP (LE) package, which has a single die. The package is lead (Pb) free, with 100% matte tin leadframe plating.

These parts are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Date of status change: December 1, 2015.

Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A1335LLETR-T.


Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • 360° contactless high resolution angle position sensor
  • CVH (Circular Vertical Hall) technology
  • Digital I2C output
  • Refresh Rate: 32 μs, 12-bit resolution
  • Automotive temperature range –40°C to 85°C
  • Two types of linearization schemes offered: harmonic linearization and segmented linearization
  • Linearization features enable use in off-axis applications
  • EEPROM with Error Correction Control (ECC) for trimming calibration
  • 1 mm thin (TSSOP-14) package
  • Automatic calibration features maintain angle accuracy over airgap

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Product Image Functional Block Diagram A1332/34 Product Image

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A1332KLETR-T n/a -20°C to 85°C Yes View Data Not for new design Contact your
local sales rep
Check Stock
ASEK-1332-SUBKIT-T DEMO BOARD -20°C to 85°C No -- Not for new design Contact your
local sales rep
Check Stock
ASEK-1332-T-KIT DEMO BOARD -20°C to 85°C No -- Not for new design Contact your
local sales rep
Check Stock

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