TIDA-00480

Automotive Hall Sensor Rotary Encoder

TIDA-00480

Design files

Overview

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.

Features
  • 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

Design files & products

Design files

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

TIDRDB2.PDF (338 K)

Detailed schematic diagram for design layout and components

TIDRDB3.PDF (209 K)

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

TIDRDB4.PDF (151 K)

Detailed overview of design layout for component placement

TIDRDB5.PDF (399 K)

Detailed overview of design layout for component placement

TIDRDB7.ZIP (721 K)

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

TIDRDB6.PDF (918 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

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Digital demultiplexers & decoders

CD4511B-MILCMOS BCD-to-7-Segment LED Latch Decoder Drivers

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Hall-effect latches & switches

DRV5013-Q1Automotive, high voltage (up to 38V), high bandwidth (30-kHz) Hall effect latch

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MSP430 microcontrollers

MSP430G2553-Q1Automotive 16-MHz MCU with 16-kb Flash, 512B SRAM, 10-bit ADC, comparator, UART/SPI/I2C, timer

Data sheet document-pdfAcrobat PDF

Start development

Software

Support software

TIDA-00480 Software – TIDC957.ZIP (24 K)

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) Dec. 02, 2021
Technical article You can be an electromechanical engineer Nov. 10, 2017
Technical article Measuring wheels in motion Apr. 24, 2015

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