TAS6424M-Q1

ACTIVE

Automotive, 45-W, 2-MHz, 4-ch 4.5- to 18-V digital input Class-D audio amplifier w/ load dump

Top

Product details

Parameters

Audio input type Digital Input Architecture Class-D Speaker channels (Max) 4 Power stage supply (Max) (V) 18 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 1 Output power (W) 45 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 165 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 18 Power to parallel bridge tied load (Max) (W) 90 Sampling rate (Max) (kHz) 96 PSRR (dB) 75 Operating temperature range (C) -40 to 125 open-in-new Find other Speaker amps

Package | Pins | Size

HSSOP (DKQ) 56 191 mm² 18.42 x 10.35 open-in-new Find other Speaker amps

Features

  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1:
      –40°C to +125°C TA
  • Advanced Load Diagnostics
    • DC Diagnostics run without Input Clocks
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
  • Easily meet CISPR25-L5 EMC Specification
  • Audio Inputs
    • 4 Channel I2S or 4/8-Channel TDM Input
    • Input Sample Rates: 44.1 kHz, 48 kHz, 96 kHz
    • Input Formats: 16-bit to 32-bit I2S, and TDM
  • Audio Outputs
    • Four-Channel Bridge-Tied Load (BTL)
    • Two-Channel Parallel BTL (PBTL)
    • Up to 2.1 MHz Output Switching Frequency
    • 27 W, 10% THD Into 4 Ω at 14.4 V BTL
    • 45 W, 10% THD Into 2 Ω at 14.4 V BTL
    • 80 W, 10% THD Into 2 Ω at 18 V PBTL
  • Audio Performance Into 4 Ω at 14.4 V BTL
    • THD+N < 0.02% at 1 W
    • 42 µVRMS Output Noise
    • –90 dB Crosstalk
  • Load Diagnostics
    • Output Open and Shorted Load
    • Output-to-Battery or Ground Shorts
    • Line Output Detection Up to 6 kΩ
    • Host-Independent Operation
  • Protection
    • Output Current Limiting
    • Output Short Protection
    • 40 V Load Dump
    • Open Ground and Power Tolerant
    • DC Offset
    • Overtemperature
    • Undervoltage and Overvoltage
  • General Operation
    • 4.5 V to 18 V Supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Warning

All trademarks are the property of their respective owners.

open-in-new Find other Speaker amps

Description

The TAS6424M-Q1 device is a four-channel digital-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency enabling a cost-optimized solution in a very small PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 40 kHz audio bandwidth.

The output switching frequency can be set either above the AM band, which eliminates AM-band interferences and reduces output filtering and cost, or below the AM band to optimize efficiency.

The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection of AC-coupled tweeters to help to reduce test time during the manufacturing process.

The TAS6424M-Q1 Class-D audio amplifier is designed for use in automotive head units and external amplifier modules. The device provides four channels at 27 W into 4 Ω at 10% THD+N and 45 W into 2 Ω at 10% THD+N from a 14.4 V supply.

For pin compatible one, two and four-channel devices see the TAS6421-Q1, TAS6422-Q1, TAS6424L-Q1 and TAS6424-Q1.

open-in-new Find other Speaker amps
Download

Recommended alternative devices

For a pin-to-pin compatible 2-channel alternative, see TAS6422-Q1.

For a pin-to-pin compatible 1-channel alternative, see TAS6421-Q1.

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet TAS6424M-Q1 45-W,​​​ 2-MHz digital input 4-channel automotive class-D audio amplifier with load dump protection and I2C diagnostics datasheet Jan. 29, 2019
Application notes Diagnostics and Protections in Automotive Audio Systems (Rev. A) Sep. 24, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
175
Description

The TAS6424-Q1 evaluation module showcases the industry's first 2.1-Mhz 4-Ch Digital Input Class-D Audio solution for Automotive Infotainment applications. TAS6424-Q1’s 2.1-Mhz switching frequency allows customers to significantly reduce inductor size and cost and optimize total system (...)

Features
  • 2.1-Mhz Switching Frequency
  • 4-Ch 27-W/Ch at 10% THD+N into 4-Ω with a 14.4-V supply
  • I2C Diagnostics and Protection
  • CISPR25, class 5 Radiated/Conducted Emission compliant
  • Optical SPDIF, USB and PSIA (external I2S) input options

Design tools & simulation

SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)

CAD/CAE symbols

Package Pins Download
HSSOP (DKQ) 56 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by 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, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos