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TAS6424L-Q1
  • TAS6424L-Q1
  • TAS6424L-Q1

TAS6424L-Q1

ACTIVE

Automotive, 27-W, 2-MHz, 4-ch 4.5- to 18-V digital input Class-D audio amplifier w/ load dump

Texas Instruments TAS6424L-Q1 Product Info

1 April 2026 0

Parameters

Output power (W)

27

Power stage supply (max) (V)

18

Power stage supply (min) (V)

4.5

Speaker channels (max)

4

Features

thermal pad up

Audio input type

Digital Input

Control interface

I2C

THD + N at 1 kHz (%)

0.03

Switching frequency (max) (Hz)

2100000

Output noise voltage (µV)

42

Sampling rate (max) (Hz)

96000

Rating

Automotive

Operating temperature range (°C)

-40 to 125

Package

HSSOP (DKQ)-56-190.647 mm² 18.42 x 10.35

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
  • 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

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.

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.

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