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TIDA-060017

Transmitting SPI Signals Over LVDS Interface Reference Design

Design files

TIDA-060017

Design files

Overview

This reference design demonstrates how to resolve and optimize signal integrity challenges typically found when sending SPI signals over longer distance on the same PCB or off PCB to another board in a noisy environment by transmitting SPI signals over an LVDS interface. The concept offers high-noise immunity, reduced EMI emission and wider common-mode input tolerance.

Features
  • Noise immunity and range extension for SPI bus using an LVDS interface
  • At least three-meter communication range using SPI over LVDS versus 0.5-meter range using standard SPI
  • Techniques to reduce propagation delay and improve SPI communication speed or range by routing SCLK back to SPI master
  • 10 times lower power consumption compared to other differential signaling (RS-422/RS-485) options
  • –4-V to +5-V common-mode input voltage range offers high-ground bounce immunity
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Design files & products

Design files

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

download Design guide — TIDA-060017
TIDUED8.PDF (2332 KB)

Reference design overview and verified performance test data

download Bill of materials (BOM) — TIDA-060017
TIDRWR4.ZIP (154 KB)

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

download Gerber file — TIDA-060017
TIDCES7.ZIP (761 KB)

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

download PCB layout — TIDA-060017
TIDRWR5.PDF (1001 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-060017
TIDRWR3.ZIP (356 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Precision ADCs

ADS8910B — 18-Bit, 1-MSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface

Data sheet: PDF | HTML
LVDS, M-LVDS & PECL ICs

SN65LVDS33 — Quad LVDS receiver with -4 to 5-V common-mode range

Data sheet: PDF
LVDS, M-LVDS & PECL ICs

SN65LVDS31 — 400-Mbps LVDS quad high speed differential driver

Data sheet: PDF | HTML

Start development

Hardware development

Evaluation board

SN65LVDS31-33EVM — Evaluation Module for SN65LVDS31 and SN65LVDS33

This reference design demonstrates how to resolve and optimize signal integrity challenges typically found when sending SPI signals over longer distance on the same PCB or off PCB to another board in a noisy environment by transmitting SPI signals over an LVDS interface. The concept offers (...)
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-060017 — Transmitting SPI Signals Over LVDS Interface Reference Design
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SN65LVDS31-33EVM — Evaluation Module for SN65LVDS31 and SN65LVDS33

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TIDA-060017 — Transmitting SPI Signals Over LVDS Interface Reference Design
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Technical documentation

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* Design guide Transmitting SPI Over LVDS Interface Reference Design Jul 19, 2018

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