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A1332: Precision Hall Effect Angle Sensor IC with I²C Interface (Discontinued)

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DISCONTINUED: This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: September 13th, 2022.

Recommended substitution: For existing customer transition, and for new customers or new applications, contact Allegro Sales.
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A1332 Datasheet
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Description

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DISCONTINUED: This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: September 13th, 2022.

Recommended substitution: For existing customer transition, and for new customers or new applications, contact Allegro Sales.

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.

This part is discontinued. Samples are no longer available. Date of status change: December 5, 2018.

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

  • 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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Part Number Specifications and Availability

 A1332 and A1334 Angle Sensor IC Product Overview

Allegro’s family of contactless Hall magnetic high resolution 360° angle sensor ICs are designed for safety critical automotive and industrial applications. With their system-on-chip (SoC) architectures, they provide fast output refresh rates and low signal path latency. They are ideal for applications requiring high speed and accurate 0° to 360° angle measurements. Watch this video to learn more.

Documentation and Resources

Documentation

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Documents Found: 32
Document Type Document Name
Application Note
Advanced On-Chip Linearization in the A1332 Angle Sensor IC 
Application Note
Advanced Programming with ASEK DLLs Harmonic Linearization