Cluster and eCall Audio Reference Design With Diagnostics


Design files


This reference design is based on the TAS2505-Q1, which is a low-power Class-D digital audio amplifier with analog, digital, and mixed input capabilities. This design shows TAS2505-Q1 as suitable for automotive cluster and eCall applications by showcasing the device's ability to run on a single 5-V supply. Two external circuits examples show how open load detection can be added to the amplifier's native fault detection, which includes the ability to detect short to ground, short to power, short between terminals, and over-temperature.

  • Mono Class-D BTL speaker amplifier, 2.6 W at 10% THD (4 Ω, 5.5 V)
  • Load diagnostic functions: output to GND short, terminal to terminal short, output to power short, open load, over-temperature
  • Single 5-V supply rail
  • Supports 8-kHz to 96-kHz sample rates
  • Analog, digital, and mixed input capabilities

Design files & products

Design files

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


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRWV8.ZIP (2400 K)

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

TIDCET9.ZIP (1988 K)

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

TIDRWW0.PDF (1553 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Speaker amps

TAS2505-Q1Automotive, 2-W, mono, digital input class-D audio amp with audio processing & integ. load diagnosti

Data sheet: PDF | HTML

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Evaluation board

TAS2505-Q1EVM — TAS2505-Q1 Audio Amplifier Evaluation Board with Diagnostics

The TAS2505-Q1EVM Evaluation Module (EVM) is a complete demo and evaluation reference design for the TAS2505-Q1, which is a low-power Class-D digital audio amplifier with analog, digital, and mixed input capabilities. The EVM can be controlled via USB using TI’s Codec Control software, or (...)

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GUI for evaluation module (EVM)

TAS25xx Codec Control EVM GUI — SLAC772.ZIP (3110 K)

Technical documentation

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Type Title Date
* Design guide Cluster and eCall Audio With Diagnostics Reference Design (Rev. A) Jul. 18, 2019
Application note Automotive Diagnostics Using TAS2505-Q1 (Rev. C) PDF | HTML Jun. 29, 2022
User guide TAS2505 Application Reference Guide (Rev. A) PDF | HTML Feb. 23, 2021
Technical article Automotive audio from the inside out: more channels, more power, more applications than ever before Oct. 19, 2018

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