TIDA-00223

Automotive Audio I2S over Coax Class D Amplifier Reference Design

TIDA-00223

Design files

Overview

This reference design is an I²S/TDM-based, low-cost, easy-to-use alternative to fiber optics/analog copper wire for connecting an automotive (sound) control panel to an output stage/power amplifier. Supporting I²S as well as TDM, it is capable of transmitting digital audio signal to 16 independent channels of speakers with each channel output of 80W at 4Ω. It also supports bidirectional communication with the control unit or processor via I²C, over a single shielded twisted pair (STP) or coaxial. Furthermore, the TIDA-00223 reference design enables fast implementation with power supply included, and it has all the protection and diagnostics requirements needed in modern cars.

Features
  • Wide input voltage range: off battery 6V to 40V power supply
  • The design consists of two boards:
    * SAT0084 (FPD-LINK III and audio amplifier)
    * SAT0085 (600W power solution)
  • Audio Serializer/Deserializer support I2S and TDM audio for up to 16 audio channels
  • Audio plus bidirectional I²C and GPIO control over a single STP or coaxial cable, eliminating the need for a local microcontroller
  • Power over Coax to run distributed microphone
Industrial

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.

TIDU463.PDF (257 K)

Reference design overview and verified performance test data

TIDR939.PDF (392 K)

Detailed schematic diagram for design layout and components

TIDR940.PDF (231 K)

Detailed schematic diagram for design layout and components

TIDR941.PDF (197 K)

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

TIDR942.PDF (115 K)

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

TIDR943.PDF (728 K)

Detailed overview of design layout for component placement

TIDR944.PDF (721 K)

Detailed overview of design layout for component placement

TIDR945.PDF (664 K)

Detailed overview of design layout for component placement

TIDR948.PDF (376 K)

Detailed overview of design layout for component placement

TIDR949.PDF (407 K)

Detailed overview of design layout for component placement

TIDR947.ZIP (11628 K)

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

TIDR951.ZIP (4191 K)

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

TIDC537.ZIP (1154 K)

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

TIDC538.ZIP (363 K)

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

TIDR946.PDF (7074 K)

PCB layer plot file used for generating PCB design layout

TIDR950.PDF (2799 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Audio DACs

PCM5102A-Q1Automotive Catalog 2VRMS DirectPath™, 112dB Audio Stereo DAC with 32-bit, 384kHz PCM Interface

Data sheet document-pdfAcrobat PDF open-in-new HTML
Boost controllers (external switch)

LM5122-Q1Automotive, 3-V to 65-V wide VIN, current mode synchronous boost controller with multiphase

Data sheet document-pdfAcrobat PDF open-in-new HTML
Boost converters (integrated switch)

LM5001-Q13.1-V to 75-V wide VIN, 1-A current mode non-synchronous switch mode regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

LM34919C-Q1Automotive 4.5-50V Wide Vin 600mA 2.6MHz Ultra-Small Constant On-Time Non-Synchronous Buck Regulator

Data sheet document-pdfAcrobat PDF
Counters

CD4017BCMOS Decade Counter with 10 Decoded Outputs

Data sheet document-pdfAcrobat PDF
FPD-Link SerDes

DS90UA101-Q1Automotive Multi-Channel Digital Audio Serializer

Data sheet document-pdfAcrobat PDF
FPD-Link SerDes

DS90UA102-Q1Multi-Channel Digital Audio Deserializer

Data sheet document-pdfAcrobat PDF
Linear & low-dropout (LDO) regulators

LM2936Q-Q1Automotive 50-mA, off-battery (60-V), low-dropout voltage regulator with reverse voltage protection

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS793-Q1Automotive 200-mA, low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430F225216 MHz MCU with 16KB Flash, 512B SRAM, haptics-enabled, capacitive touch, 10-bit ADC, UART/SPI/I2C

Data sheet document-pdfAcrobat PDF

Technical documentation

No results found. Please clear your search and try again.
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Type Title Date
Design guide TIDA-00223 Overview Jul. 29, 2014
User guide TIDA-00223 Test Results Jul. 29, 2014

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