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TIDA-00480

Automotive Hall Sensor Rotary Encoder

Design files

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
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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.

download Schematic — TIDA-00480
TIDRDB2.PDF (338 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00480
TIDRDB3.PDF (209 K)

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

download Assembly drawing — TIDA-00480
TIDRDB4.PDF (151 K)

Detailed overview of design layout for component placement

download Assembly drawing — TIDA-00480
TIDRDB5.PDF (399 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00480
TIDRDB7.ZIP (721 K)

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

download Gerber file — TIDA-00480
TIDC956.ZIP (383 K)

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

download PCB layout — TIDA-00480
TIDRDB6.PDF (918 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS61097A-33 — 0.9Vin, 3.3Vout Boost Converter with Bypass Switch - 5nA Shutdown Current

Data sheet: PDF | HTML
Digital demultiplexers & decoders

CD4511B — CMOS BCD-to-7-Segment LED Latch Decoder Drivers

Data sheet: PDF
Digital demultiplexers & decoders

CD4511B-MIL — CMOS BCD-to-7-Segment LED Latch Decoder Drivers

Data sheet: PDF
Hall-effect latches & switches

DRV5013-Q1 — Automotive, high voltage (up to 38V), high bandwidth (30-kHz) Hall effect latch

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G2553-Q1 — Automotive 16-MHz MCU with 16-kb Flash, 512B SRAM, 10-bit ADC, comparator, UART/SPI/I2C, timer

Data sheet: PDF

Start development

Software

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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