TAS6424L-Q1

ACTIVE

Automotive, 27-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) 2 Output power (W) 27 THD + N @ 1 kHz (%) 0.03 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) 70 Sampling rate (Max) (kHz) 96 PSRR (dB) 70 Rating Automotive 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

  • Qualified for Automotive Applications
  • 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), With Option of Parallel BTL (PBTL)
    • Up to 2.1 MHz Output Switching Frequency
    • 27 W, 10% THD Into 4 Ω at 14.4 V
    • 27 W, 10% THD Into 2 Ω at 14.4 V
    • 80 W, 10% THD Into 2 Ω at 18 V PBTL
  • Audio Performance Into 4 Ω at 14.4 V
    • THD+N < 0.03% 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
    • Runs Without Input Clocks
    • AC Diagnostic for Tweeter detection
  • Protection
    • Output Current Limiting
    • Output Short Protection
    • 40 V Load Dump
    • Open Ground and Power Tolerant
    • DC Offset
    • Overtemperature
    • Undervoltage and Overvoltage
  • General Operation
    • EVM Passes CISPR25-L5 EMC Specification
    • 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 TAS6424L-Q1 device is a four-channel digital-input Class-D audio amplifier 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 27 W into 2 Ω at 10% THD+N from a 14.4 V supply . The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions. The output switching frequency can be set either above the AM band, which eliminates the AM-band interference and reduces output filtering and cost, or below AM band to optimize efficiency.

The wide supply-voltage range from 4.5 V to 18 V helps minimize audio artefacts in start-stop applications

The device incorporates all the functionality required to perform in the demanding OEM applications area. The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection AC-coupled tweeters to help to reduce test time during the manufacturing process.

The device is offered in a 56-pin HSSOP PowerPAD™ package with the exposed thermal pad up.

For a pin compatible two-channel devices see the TAS6422-Q1 device.

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

= Featured
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet TAS6424L-Q1 27-W,​​​ 2-MHz Digital Input 4-Channel Automotive Class-D Audio Amplifier With Load-Dump Protection and I2C Diagnostics datasheet Mar. 30, 2017
Application notes Diagnostics and Protections in Automotive Audio Systems (Rev. A) Sep. 24, 2019
Application notes Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) Sep. 05, 2019
User guides TAS6424L-Q1 EVM User's Guide (Rev. A) Oct. 20, 2017
Application notes Class-D Amplifier External Load Diagnostics Jan. 23, 2017
Technical articles How switching above the AM band eases automotive Class-D amplifier EMC designs Dec. 05, 2016
Application notes LC Filter Design (Rev. A) Nov. 09, 2016

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
$149.00
Description
The TAS6422Q1EVM showcases the first true 2.1Mhz 2-Ch Digital Input Class-D Audio Solution for Automotive Infotainment in the market.  TAS6422’s 2.1-Mhz switching frequency allows customers to significantly reduce inductor size and cost and optimize total system cost.  TAS6422 (...)
Features
  • 2.1-Mhz switching frequency
  • 2-Ch 25-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
EVALUATION BOARDS Download
document-generic User guide
$175.00
Description
The TAS6424L EVM showcases the first true 2.1Mhz 4-Ch Digital Input Class-D Audio Solution for automotive infotainment in the market.  TAS6424L’s 2.1-Mhz switching frequency allows customers to significantly reduce inductor size and cost and optimize total system cost. TAS6424L delivers (...)
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
EVALUATION BOARDS Download
document-generic User guide
$175.00
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

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

DC and AC Load Diagnostics Using 75-W TAS6424-Q1 Class-D Audio Amplifier

In this training, you will gain a better understanding of the design need for AC and DC load diagnostics, how load diagnostics are measured and the circuitry.

Posted: 25-Jan-2017
Duration: 14:05

Related videos