TIDA-00724

Automotive emergency call (eCall) audio subsystem reference design

TIDA-00724

Design files

Overview

The efficiency and diagnostics necessary for automotive emergency call (eCall) systems generate unique requirements for the audio subsystem, such as speaker diagnostics and low-power consumption.  This reference design shows how to use our automotive two-channel audio codec (TLV320AIC3104-Q1) and a class-D audio amplifier (TAS5411-Q1) for eCall applications.

Features
  • The integrated load-dump protection reduces external voltage clamp cost and size
  • Onboard load diagnostics report the status of the speaker through I²C which reduces external components needed for diagnostic coverage
  • TLV320AIC3104-Q1 + TAS5411-Q1 combo allows for reduced power consumption, reduced heat and reduced peak currents in the electrical system
  • TAS5411-Q1 provides up to 8-W output power for loud, clear audio in an unpredictable emergency environment
  • Additional output from TLV320AIC3104-Q1 can be used for the head unit or other car audio needs and eliminates the need for another device

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.

TIDUB26A.PDF (1787 K)

Reference design overview and verified performance test data

TIDRJN6A.PDF (403 K)

Detailed schematic diagram for design layout and components

TIDRJN7A.PDF (59 K)

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

TIDRJN8.PDF (267 K)

Detailed overview of design layout for component placement

TIDRJO0.ZIP (1055 K)

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

TIDCBN0.ZIP (1964 K)

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

TIDRJN9.PDF (2075 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Speaker amps

TAS5411-Q1Automotive, 8-W, 1-ch, 4.5- to 18-V analog input Class-D audio amplifier w/ I2C diag & load dump

Data sheet document-pdfAcrobat PDF open-in-new HTML
Audio CODECs

TLV320AIC3104-Q1Automotive Low-Power Stereo Audio Codec with 6 Audio Input Pins and 6 Audio Output Drivers

Data sheet document-pdfAcrobat PDF open-in-new HTML
Audio CODECs

TLV320AIC3109-Q1Automotive Low-Power 96kHz Mono Audio Codec

Data sheet document-pdfAcrobat PDF open-in-new HTML
ESD & surge protection ICs

TPD2E007Dual 15-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces

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

Technical documentation

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Type Title Date
* Design guide Automotive emergency call (eCall) audio subsystem reference design (Rev. A) Jan. 24, 2019

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