Automotive-Qualified 16-Bit Rotary Quadrature Decoder Reference Design
TIDA-00580
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Description & Features

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Key Document

Description

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


See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

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Design Files

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TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
SN74LV1T04  Single Power Supply INVERTER Gate logic level shifter  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules
SN74LV1T34  Single Power Supply BUFFER Logic Level Shifter (no enable)  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules
SN74LV393A-Q1  Automotive Catalog Dual 4-Bit Binary Counters  Specialty logic  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G04-Q1  Automotive Catalog Single Inverter  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G374-Q1  Automotive Catalog Single D-Type Flip-Flop with 3-State Output  Flip-flop/latch/register  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2G17-Q1  Automotive Catalog Dual Schmitt-Trigger Buffer  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
TCA9539-Q1  Automotive Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander  I2C  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SN74LV1T04 Download Download
Download Download
SN74LV1T34 Download Download
Download Download
SN74LV393A-Q1 Download Download
SN74LVC1G04-Q1 Download Download
Download Download
SN74LVC1G374-Q1 Download Download
Download Download
SN74LVC2G17-Q1 Download Download
TCA9539-Q1 Download

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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (2)
Title Type Size (KB) Date
PDF 328 24 Sep 2015
PDF 1872 10 Jul 2015
Design files (7)
Title Type Size (KB) Date
ZIP 343 24 Sep 2015
ZIP 3864 24 Sep 2015
ZIP 359 24 Sep 2015
PDF 313 24 Sep 2015
PDF 196 24 Sep 2015
PDF 59 24 Sep 2015
PDF 232 24 Sep 2015

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