Automotive Hall Sensor Rotary Encoder


Design files


This is an incremental rotary encoder that uses contactless magnetic sensing to detect rotational speed and direction.  The two Hall Effect sensors measure the 66-pole ring magnet and output two signals in quadrature.  This automotive-qualified solution is a low-cost and far more reliable alternative to conventional mechanical contact-based encoders, as it uses solid-state sensing that is immune to physical wear, dirt, corrosion, and RF noise.

  • Extremely simple, reliable, and low-cost
  • Greater design flexibility and ESD immunity, over mechanical encoder modules
  • 66-pole magnet provides 132 detections per 360° of rotation (1 per 2.7°)
  • >20kHz Hall Effect sensor bandwidth provides low 15µs latency
  • Digital sensing and digital signaling offer noise immunity
  • Automotive qualified to AEC-Q100
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components

TIDC956.ZIP (383 K)

Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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MSP430 microcontrollers

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Data sheet: PDF

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Technical documentation

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Type Title Date
* User guide TIDA-00480 Design Considerations Mar. 09, 2015
Application note Incremental Rotary Encoders (Rev. B) PDF | HTML Dec. 02, 2021
Technical article You can be an electromechanical engineer PDF | HTML Nov. 10, 2017
Technical article Measuring wheels in motion PDF | HTML Apr. 24, 2015

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