TIDA-00580

Automotive-Qualified 16-Bit Rotary Quadrature Decoder Reference Design

TIDA-00580

Design files

Overview

People prefer to use knobs over touchscreens in many situations.  This solution minimizes the required connections to a microcontroller to monitor a rotary quadrature encoder's direction and distance of rotation.

Features

 

• Work with any rotary quadrature encoder.
•Overvoltage tolerant inputs allow for a wide variety of input voltage ranges.
• Voltage translation allows for 2-V to 5-V logic outputs
• Open-drain interrupt output indicates to the MCU when a change has occurred.
• Low power standby operation.                                                • Freeing up MCU operating time.

• Work with any rotary quadrature encoder

• Overvoltage tolerant inputs allow for a wide variety of input voltage ranges

• Voltage translation allows for 2-V to 5-V logic outputs

• Open-drain interrupt output indicates to the MCU when a change has occurred

• Low power standby operation

• Freeing up MCU operating time

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.

TIDUAQ6.PDF (328 K)

Reference design overview and verified performance test data

TIDUAA8.PDF (1872 K)

Reference design overview and verified performance test data

TIDRHB7.PDF (232 K)

Detailed schematic diagram for design layout and components

TIDRHB8.PDF (59 K)

Detailed schematic diagram for design layout and components

TIDRHB9.PDF (196 K)

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

TIDRHC0.PDF (313 K)

Detailed overview of design layout for component placement

TIDRHC2.ZIP (3864 K)

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

TIDCB02.ZIP (343 K)

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

TIDRHC1.ZIP (359 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Counters

SN74LV393A-Q1Automotive Catalog Dual 4-Bit Binary Counters

Data sheet document-pdfAcrobat PDF
D-type flip-flops

SN74LVC1G374-Q1Automotive Catalog Single D-Type Flip-Flop with 3-State Output

Data sheet document-pdfAcrobat PDF
Fixed-direction voltage translators

SN74LV1T04Single Power Supply INVERTER Gate logic level shifter

Data sheet document-pdfAcrobat PDF
Fixed-direction voltage translators

SN74LV1T34Single Power Supply BUFFER Logic Level Shifter (no enable)

Data sheet document-pdfAcrobat PDF open-in-new HTML
I2C general-purpose I/Os (GPIOs)

TCA9539-Q1Automotive 16-bit 1.65- to 3.6-V I2C/SMBus I/O expander with interrupt, reset & config registers

Data sheet document-pdfAcrobat PDF open-in-new HTML
Inverting buffers & drivers

SN74LVC1G04-Q1Automotive single 1.65-V to 5.5-V inverter

Data sheet document-pdfAcrobat PDF
Noninverting buffers & drivers

SN74LVC2G17-Q1Automotive 2-ch, 1.65-V to 5.5-V buffers with Schmitt-Trigger inputs

Data sheet document-pdfAcrobat PDF

Technical documentation

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Type Title Date
* Design guide TIDA-00580 Test Results Sep. 24, 2015
* Design guide Discrete Automotive Rotary Quadrature Decoder With I2C Interface Design Guide Jul. 10, 2015

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