Automotive 2-MHz Class-D, 4-Channel, 21-W Audio Amplifier in Class AB Form-Factor Reference Design TIDA-00743 (ACTIVE)

Description & Features

Technical Documents

Support & Training

Order Now

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

Key Document


The TIDA-00743 reference design is a small module designed for evaluation of a digital-input class-D audio amplifier in a system which has been designed for a typical class AB audio power amplifier module. This design demonstrates the reduction in power dissipation that a class D amplifier provides. This design demonstrates how 2.1 MHz operation of a TAS6424-Q1 enables a compact power amplifier solution.

  • Audio output power: 21W per channel at 1% THD+N
  • Meets automotive CISPR25 Class-5 EMI requirements
  • Wide power supply voltage range of 4.5V to 18V
  • 40V load dump protection
  • Small size:  42.3mm x 53.5mm

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


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

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

Download Design Files

TI Devices (5)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CDCS504-Q1  CDCS504-Q1 Clock Buffer/Clock Multiplier  Clock generators  Sample & Buy Not Available
MSP430G2332-EP  Enhanced Product Mixed Signal Microcontroller  MSP430 ultra-low-power MCUs  Sample & Buy Not Available
PCM1865-Q1  Automotive 110dB 4-Channel Software-Controlled Audio ADC With Universal Front End  Audio converters  Sample & Buy View Design Kits & Evaluation Modules
TAS6424-Q1  75-W 2.1-MHz Digital Input 4-Channel Automotive Class-D Audio Amplifier  Audio amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS7B67-Q1  Automotive 450mA High-Voltage Ultra-Low-Iq Low-Dropout Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CDCS504-Q1 Download Download
MSP430G2332-EP Download Download
PCM1865-Q1 Download -
TAS6424-Q1 Download
TPS7B67-Q1 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

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 (1)
Title Type Size (KB) Date
PDF 15002 17 May 2017
Design files (12)
Title Type Size (KB) Date
ZIP 1811 17 Jul 2017
ZIP 2842 17 Jul 2017
ZIP 2892 17 Jul 2017
ZIP 1211 17 Jul 2017
PDF 930 17 Jul 2017
PDF 1580 17 Jul 2017
PDF 148 17 Jul 2017
PDF 256 17 Jul 2017
PDF 26 17 Jul 2017
PDF 29 17 Jul 2017
PDF 427 17 Jul 2017
PDF 514 17 Jul 2017
Related Tools & Software

Reference Designs  ( 1 )

Name Part Number Tool Type
Automotive 4-Channel Class D Amplifier Reference Design for Head Unit  TIDA-00573  TI Designs

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
4-Ch Analog Input Class-D Audio Amp EVM w/I2C Diagnostics & Protection for Auto Head Unit  TAS5404Q1EVM  Evaluation Modules & Boards 
TAS6424Q1 2.1MHz 4Ch Digital Input Class-D Audio Amplifier w/I2C Diagnostics Evaluation Module  TAS6424Q1EVM  Evaluation Modules & Boards 

Software (1)

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles