Automotive, 26-W, 4-ch, 6- to 18-V analog SE input Class-D audio amplifier w/ I2C diag & load dump


Product details


Audio input type Analog Input Architecture Class-D Speaker channels (Max) 4 Power stage supply (Max) (V) 18 Power stage supply (Min) (V) 5.6 Load (Min) (ohms) 2 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 93 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 5.6 Analog supply (Max) (V) 18 PSRR (dB) 75 Operating temperature range (C) -40 to 105 open-in-new Find other Speaker amps

Package | Pins | Size

HTQFP (PHD) 64 196 mm² 14 x 14 open-in-new Find other Speaker amps


  • TAS5404-Q1 – Single-Ended Input
  • Four-Channel Class-D Power Amplifier
  • Four Analog Inputs, Four BTL Power Outputs
  • Typical Output Power at 10% THD+N
    • 26 W/Ch Into 4 Ω at 14.4 V
    • 45 W/Ch Into 2 Ω at 14.4 V
  • Channels Can Be Paralleled (PBTL) for High-
    Current Applications
  • THD+N < 0.02%, 1 kHz, 1 W Into 4 Ω
  • Patented Pop-and-Click-Reduction Technology
    • Soft Muting With Gain Ramp Control
    • Common-Mode Ramping
  • Patented AM Interference Avoidance
  • Patented Cycle-by-Cycle Current Limit
  • 75dB PSRR
  • Four-Address I2C Serial Interface for Device
    Configuration and Control
  • Channel Gains: 12 dB, 20 dB, 26 dB, 32 dB
  • Load Diagnostic Functions:
    • Output Open and Shorted Load
    • Output-to-Power and Output-to-Ground Shorts
    • Patented Tweeter Detection
  • Protection and Monitoring Functions:
    • Short-Circuit Protection
    • Load-Dump Protection to 50 V
    • Fortuitous Open-Ground and Open-Power
    • Patented Output DC Level Detection While
      Music Playing
    • Overtemperature Protection
    • Overvoltage and Undervoltage Conditions
    • Clip Detection
  • 64-Pin QFP (PHD) Power Package With Heat
    Slug Up
  • Designed for Automotive EMC Requirements
  • Qualified According to AEC-Q100
  • ISO9000:2002 TS16949-Certified
  • –40°C to 105°C Ambient Temperature Range
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The TAS5404-Q1 device is a four-channel class-D audio amplifier designed for use in automotive head units. The TAS5404-Q1 device provides four channels at 20 W continuously into 4 Ω at less than 1% THD+N from a 14.4-Vdc supply when used with the application circuit. The input is configured as an analog single-ended interface. The patented PWM topology of the device provides dramatic improvements in efficiency and audio performance over traditional linear amplifier solutions. The improvement in efficiency and audio performance reduces the power dissipated by the amplifier by a factor of ten under typical music playback conditions. The device incorporates all the required functions required by the OEM application. The built-in load diagnostic functions for detecting and diagnosing disconnected speakers help reduce test time during the manufacturing process.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TAS5404-Q1: 26-W Analog Single-Ended Input 4-Channel Class-D Amp with Load Dump Protection and I2C Diagnostics datasheet (Rev. A) Oct. 02, 2015
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Technical articles The head unit: understanding car audio amplifier system demands – part 1 Jan. 14, 2016
User guide TAS5404Q1EVM User Guide Oct. 02, 2015
Application note Class-D LC Filter Design (Rev. B) Feb. 20, 2015
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013

Design & development

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Hardware development


The TAS5404Q1EVM showcases TI’s cost-optimized 4-Ch Analog Input Class-D Audio Solution for Automotive Head Unit systems. The TAS5404 solution allows automotive customers the easiest transition from Class-AB systems to a smaller, lighter and more efficient Class-D solution at a comparable (...)

  • 4-Ch 25-W/Ch 4-Ω with a 14.4-V supply
  • 2-Ω speaker driving capabilities to head units
  • I2C Diagnostics and Protection
  • CISPR25, class 5 Radiated/Conducted Emission compliant
  • Four analog inputs, four speaker outputs and on-board USB-I2C controller

Design tools & simulation

SLOM394.ZIP (24 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

Automotive 4-Channel Class D Amplifier Reference Design for Head Unit
TIDA-00573 The TIDA-00573 reference design provides a Class D based amplifier solution that allows it to be evaluated in the form factor of a typical Class AB amplifier.  The design is optimized to mitigate thermals associated with audio amplifiers and to minimize switching noises associated with Class D (...)
document-generic Schematic
Highly Efficient and Compact 100-W Automotive Amplifier Reference Design with Boost Converter
PMP9484 PMP9484 is a 100W highly efficient and compact automotive amplifier reference design which can be used in 50W +50W stereo or 100W woofer applications.  The design is broadly divided into three main stages:
1.) Highly efficient single-phase synchronous boost converter using the LM5122 controller (...)
document-generic Schematic

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