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TAS6424-Q1

ACTIVE

Automotive, 75-W, 2-MHz, 4-ch, 4.5- to 26.4-V digital input Class-D audio amplifier

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Data sheet

TAS6424-Q1

ACTIVE
Data sheet Order now

Product details

Audio input type Digital Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 26.4 Power stage supply (min) (V) 4.5 Load (min) (Ω) 1 Output power (W) 75 THD + N at 1 kHz (%) 0.02 Iq (typ) (mA) 165 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 26.4 Sampling rate (max) (kHz) 96 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
Audio input type Digital Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 26.4 Power stage supply (min) (V) 4.5 Load (min) (Ω) 1 Output power (W) 75 THD + N at 1 kHz (%) 0.02 Iq (typ) (mA) 165 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 26.4 Sampling rate (max) (kHz) 96 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
HSSOP (DKQ) 56 190.647 mm² 18.42 x 10.35
  • Advanced Load Diagnostics
    • Runs without Input Clocks
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
  • Easy to meet CISPR25-L5 EMC Specification
  • 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
    • 75 W, 10% THD Into 4 Ω at 25 V
    • 45 W, 10% THD Into 2 Ω at 14.4 V
    • 150 W, 10% THD Into 2 Ω at 25 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
    • Host-Independent Operation
    • Programmability for Flexible Production Line Testing
  • 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 26.4-V Supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Warning
  • Advanced Load Diagnostics
    • Runs without Input Clocks
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
  • Easy to meet CISPR25-L5 EMC Specification
  • 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
    • 75 W, 10% THD Into 4 Ω at 25 V
    • 45 W, 10% THD Into 2 Ω at 14.4 V
    • 150 W, 10% THD Into 2 Ω at 25 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
    • Host-Independent Operation
    • Programmability for Flexible Production Line Testing
  • 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 26.4-V Supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Warning

The TAS6424-Q1 device is a Four-channel digital-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables 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 TAS6424-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 and 75 W into 4 Ω at 10% THD+N from a 25-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 filter size and cost, or below AM band to optimize efficiency.

For a pin compatible two-channel amplifier, see the TAS6422-Q1

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

The TAS6424-Q1 device is a Four-channel digital-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables 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 TAS6424-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 and 75 W into 4 Ω at 10% THD+N from a 25-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 filter size and cost, or below AM band to optimize efficiency.

For a pin compatible two-channel amplifier, see the TAS6422-Q1

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

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Type Title Date
* Data sheet TAS6424-Q1 75-W,​​​ 2-MHz Digital Input 4-Channel Automotive Class-D Audio Amplifier With Load-Dump Protection and I2C Diagnostics datasheet (Rev. B) PDF | HTML 10 Oct 2017
Application note Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) 05 Sep 2019
Technical article Why you should use a Class-D audio amplifier in your automotive infotainment syste PDF | HTML 08 Jan 2018
EVM User's guide TAS6424-Q1 EVM User's Guide (Rev. A) 20 Oct 2017
Technical article Forget the tiny homes craze – Have you heard about tiny inductors for automotive C PDF | HTML 12 Oct 2017
Application note Class-D Amplifier External Load Diagnostics 23 Jan 2017
Technical article How switching above the AM band eases automotive Class-D amplifier EMC designs PDF | HTML 05 Dec 2016
Application note LC Filter Design (Rev. A) 09 Nov 2016

Design & development

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

Evaluation board

TAS6424LQ1EVM — TAS6424LQ1 2.1MHz 4Ch Digital Input Class-D Audio Amplifier w/I2C Diagnostics Evaluation Module

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 (...)
User guide: PDF
Not available on TI.com
Application software & framework

PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development

PurePath™ Console is a highly integrated and easy-to-use audio development suite designed specifically to simplify the evaluation, configuration and debug process associated with the development of audio products. Watch how easy it is to use the PurePath™ Console 3 software.

PurePath Console’s (...)
Supported products & hardware

Supported products & hardware

Products
Audio CODECs
TAC5111 — Low-power mono audio codec with 105dB dynamic range ADC and 114dB dynamic range DAC TAC5111-Q1 — Automotive low power mono audio codec with 102-dB dynamic range ADC, 106-dB DAC TAC5112 — Low-power stereo audio codec with 105dB dynamic range ADC and 114dB dynamic range DAC TAC5112-Q1 — Automotive low-power stereo audio codec with 102-dB dynamic range ADC, 106-dB DAC TAC5211 — High-performance mono audio codec with 119dB dynamic range ADC and 120dB dynamic range DAC TAC5212 — High-performance stereo audio codec with 119dB dynamic range ADC and 120dB dynamic range DAC TAC5212-Q1 — Automotive low-power stereo audio codec with 115-dB dynamic range ADC, 120-dB DAC TAC5311-Q1 — Automotive mono audio codec with 102-dB dynamic range ADC, 106-dB DAC, HV-input and diagnostics TAC5312-Q1 — Automotive stereo audio codec with 102-dB dynamic range ADC, 106-dB DAC, HV-input and diagnostics TAC5411-Q1 — Automotive mono audio codec with dynamic range of 110-dB ADC, 120-dB DAC, HV-input and diagnostics TAC5412-Q1 — Automotive stereo audio codec with 110-dB dynamic range ADC, 120-dB DAC, HV-input and diagnostics TLV320AIC3268 — TLV320AIC3268 Ultra Low Power Stereo Audio Codec
Audio DACs
PCM5142 — 2V RMS DIRECTPATH 112dB Audio Stereo DAC with PCM interface and fully programmable miniDSP PCM5242 — 4.2-VRMS DirectPath™, 32-bit, 384-kHz, 114-dB Audio Stereo DAC TAD5112 — Low-power stereo audio DAC with 110dB dynamic range, and headphone and line driver TAD5112-Q1 — Automotive low-power stereo audio DAC with 106-dB dynamic range TAD5212 — High-performance stereo audio DAC with 120dB dynamic range, and headphone and line driver TAD5212-Q1 — Automotive low-power stereo audio DAC with 120-dB dynamic range PCM1690 — 113dB SNR 8-Channel Audio DAC with Differential Outputs
Audio ADCs
PCM1841-Q1 — Automotive, quad-channel 32-bit 192-kHz audio analog-to-digital converter (ADC) PCM3120-Q1 — Automotive, stereo, 106-dB SNR, 768-kHz, low-power software-controlled audio ADC PCM3140-Q1 — Automotive, quad-channel 768-kHz Burr-Brown™ audio analog-to-digital converter (ADC) with 106-dB SNR PCM5120-Q1 — Automotive, stereo, 120-dB SNR, 768-kHz, low-power software-controlled audio ADC PCM5140-Q1 — Automotive, quad-channel 768-kHz Burr-Brown™ audio analog-to-digital converter (ADC) with 120-dB SNR PCM6120-Q1 — Automotive, stereo, 123-dB SNR, 768-kHz, low-power software-controlled audio ADC PCM6140-Q1 — Automotive, quad-channel 768-kHz Burr-Brown™ audio analog-to-digital converter (ADC) with 122-dB SNR PCMD3140-Q1 — Automotive, 127-dB SNR, 768-kHz, four-channel, PDM-input to TDM- or I²S-output converter PCMD3180-Q1 — Automotive, eight-channel pulse-density-modulation input to TDM or I²S output converter TAA5212 — High-performance stereo audio ADC with 119dB dynamic range and configurable digital filters TAA5412-Q1 — Automotive stereo audio ADC with 110-dB dynamic range, HV-input integrated HV-MICBIAS, diagnostics PCMD3180 — Eight-channel pulse-density-modulation input to TDM or I²S output converter PCMD3140 — Four-channel PDM-input to TDM- or I²S-output converter
Headphone amps
TPA6166A2 — 43-mW, stereo, analog input headphone amplifier with accessory detection
Speaker amps
TAS2110 — 6.1W mono digital input Class-D speaker amp with integrated 11V Class-H boost TAS2552 — 4-W, digital/analog input smart amp with I/V sense for speaker protection & integ. 8.5-V boost TAS2555 — 5.7-W, digital input smart amp with integrated speaker protection, advanced EQ & 8.5-V Class-H boost TAS2557 — 5.7-W, digital input smart amp with integrated speaker protection, advanced EQ & 8.5-V Class-H boost TAS2559 — 5.7-W, digital input smart amp with integrated speaker protection with stereo processing TAS2560 — 5.6-W digital input smart amp with I/V sense for speaker protection & integrated 8.5-V Class-H boost TAS2562 — 6.1-W, digital input smart amp with I/V sense for speaker protection & integrated 11-V Class-H boost TAS2563 — 6.1-W, digital input, smart amp & integrated speaker protection, advanced EQ & 11-V Class-H boost TAS2564 — 7-W, digital input smart amp with I/V sense for speaker protection & integrated 13-V Class-H boost TAS2572 — 6.6W digital-input smart amplifier with I/V sense and integrated 13V Class-H boost TAS2764 — 13-W, digital input, 2.3-V to 16-V smart amp I/V sense for speaker protection and multi-level supply TAS2770 — 20-W, digital input, 4.5- to 18-V smart amp with I/V sense for speaker protection TAS2780 — 25-W, digital input, 4.5-V to 24-V 6-A peak smart amp with I/V sense for speaker protection TAS2781 — 25 W, 4.5-V to 23-V, digital-input integrated-audio-processing speaker-protection class-D amplifier TAS5729MD — 12-W stereo, 24-W mono, 4.5- to 26.4-V supply, digital input open loop Class-D audio amplifier w/ HP TAS5731 — 20-W stereo, 41-W mono, 8- to 21.5-V, digital input open loop Class-D audio amplifier w/ 2.1 support TAS5733L — 10-W stereo, 20-W mono, 8- to 16.5-V, digital input open loop Class-D audio amplifier w/ EQ & AGL TAS5751M — 25-W stereo, 40-W mono, 8- to 26.4-V, digital input open loop Class-D audio amplifier w/ EQ & AGL TAS5754M — 40-W stereo, 61-W mono, 4.5- to 26.4-V supply, digital input Class-D audio amplifier TAS5756M — 30-W stereo, 40-W mono, 4.5- to 26.4-V supply, digital input Class-D audio amplifier TAS5760L — 21-W stereo, 42-W mono, 4.5- to 16.4-V supply, digital input Class-D audio amplifier TAS5760LD — 21-W stereo, 42-W mono, 4.5- to 16.4-V, digital input Class-D audio amplifier w/ integrated HP TAS5760M — 55-W stereo, 114-W mono, 4.5- to 26.4-V supply, digital input Class-D audio amplifier TAS5760M-Q1 — Automotive, 25-W, 2-ch, 4.5- to 26.4-V supply digital input Class-D audio amplifier TAS5760MD — 55-W stereo, 114-W mono, 4.5- to 26.4-V, digital input Class-D audio amplifier w/ integrated HP TAS5766M — 50-W stereo, 100-W mono, 4.5- to 26.4-V supply, digital input Class-D Smart Audio Amplifier TAS5780M — 20-W stereo, 40-W mono, 4.5- to 26.4-V supply, digital input Class-D audio amplifier TAS5782M — 20-W stereo, 40-W mono, 4.5- to 26.4-V, digital input Class-D Smart Audio Amplifier w/ processing TAS5805M — 23-W stereo, 45-W mono, 4.5- to 26.4-V supply, digital input Class-D audio amplifier w/ processing TAS5822M — 35-W, inductor-less, digital input, stereo, closed-loop Class-D amp with 96-kHz enhanced process TAS5825M — 38-W stereo, 65-W mono, 4.5- to 26-V, digital input Class-D Smart Audio Amplifier w/ 192kHz arch TAS5825P — 4.5V to 26.4V Class-H control digital-in Class-D audio amp with ultra-low idle & superior efficiency TAS6422-Q1 — Automotive, 75-W, 2-MHz, 2-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump TAS6424-Q1 — Automotive, 75-W, 2-MHz, 4-ch, 4.5- to 26.4-V digital input Class-D audio amplifier TAS6424E-Q1 — Automotive, 75-W, 2-MHz, quad-channel, 4.5- to 26.4-V digital input Class-D audio amplifier TAS6424L-Q1 — Automotive, 27-W, 2-MHz, 4-ch 4.5- to 18-V digital input Class-D audio amplifier w/ load dump TPA6404-Q1 — Automotive, 45-W, 2-MHz, 4-ch 4.5- to 18-V supply analog input Class-D audio amplifier w/ load dump
Piezo speaker drivers/receivers
DRV5825P — 4.5-V to 26.4-V, 7.5-A stereo, 15-A mono, digital input, Piezo driver with smart I/V protection
Hardware development
Evaluation board
ADC3120EVM-PDK — TLV320ADC3120 evaluation module for stereo-channel, 768-kHz, Burr-Brown™ audio ADC with 106-dB SNR ADC3120Q1EVM-PDK — PCM3120-Q1 evaluation module for stereo, 768-kHz, audio analog-to-digital converter with 106-dB SNR ADC5120EVM-PDK — TLV320ADC5120 evaluation module for stereo-channel, 768-kHz, Burr-Brown™ audio ADC with 120-dB SNR ADC5120Q1EVM-PDK — PCM5120-Q1 evaluation module for stereo, 768-kHz, audio analog-to-digital converter with 120-dB SNR ADC6120EVM-PDK — TLV320ADC6120 evaluation module for stereo-channel, 768-kHz, Burr-Brown™ audio ADC with 123-dB SNR ADC6120Q1EVM-PDK — PCM6120-Q1 evaluation module for stereo, 768-kHz, audio analog-to-digital converter with 123-dB SNR PCM1809EVM — PCM1809 evaluation module PCMD3140Q1EVM-PDK — PCMD3140-Q1 evaluation module for four-channel, PDM-input to TDM- or I²S-output converter PP-SALB2-EVM — PP-SALB2-EVM Smart amp speaker characterization board evaluation module (Learning Board 2) TAS2555YZEVM — TAS2555 5.7W Class-D Audio Amplifier Evaluation Module TAS2557EVM — TAS2557 5.7-W Class-D Audio Amplifier Evaluation Module with Class-H Boost and Speaker Sense TAS2559EVM — TAS2559 5.7-W Class-D Audio Amplifier Evaluation Module TAS2560EVM — TAS2560 5.6W Class-D Audio Amplifier Evaluation Module TAS2770EVM — TAS2770EVM Mono, Digital Input, Class-D, IV Sense Audio Amplifier Evaluation Module for QFN Package TAS2781EVM — TAS2781 evaluation module for mono Class-D audio amplifier with digital input and speaker IV sense TAS3251EVM — TAS3251 175W Stereo / 350W Mono Ultra-HD Digital-In Class-D Evaluation Module TAS5721EVM — TAS5721 Evaluation Module TAS5733LEVM — TAS5733L Digital Input, Open-Loop Class-D Audio Amplifier Evaluation Module TAS5751MEVM — TAS5751M Digital Input, Open Loop Class-D Audio Amplifier Evaluation Module TAS5754MDCAEVM — TAS5754M 30-W Digital I2S Input, Closed-Loop Audio Class-D Amplifier Evaluation Module TAS5756MDCAEVM — TAS5756M 30-W Digital I2S Input, Closed-Loop Audio Class-D Amplifier Evaluation Module TAS5760XXEVM — TAS5760M/MD/L/LD Evaluation Module TAS5782MEVM — TAS5782M Digital Input Closed-Loop Class-D Audio Amplifier with 96-kHz Processing Evaluation Module TAS5805MEVM — TAS5805M Digital Input Stereo Closed-Loop Class-D Audio Amplifier with Enhanced Processing EVM TAS5825MEVM — Digital-input closed-loop class-D audio amp with 96kHz/192kHz extended processing evaluation module
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Simulation model

TAS6424 IBIS Model

SLOM433.ZIP (26 KB) - IBIS Model
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Simulation tool

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Reference designs

TIDEP-0097 — Entry-level head unit display audio with Jacinto™ 6 entry reference design

Based on TI's Jacinto™ DRA71x processor, this automotive reference design focuses on system-level cost savings. The 6 layer design reduces PCB costs through an optimized via breakout scheme, integration of key features and an optimized power distribution network. Functionality can be added or (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00733 — Automotive 8-Channel Class-D Amplifier with 2.1 MHz Switching Power Supply Reference Design

TIDA-00733 is a reference design for an eight-channel, Class-D amplifier that is capable of driving 2-Ω loads and an off-battery step-down power supply with 5-V and  3.3-V outputs. The amplifier design provides audio inputs for each audio channel. A  high-performance audio (...)
Design guide: PDF
Schematic: PDF
Reference designs

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

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 (...)
Design guide: PDF
Schematic: PDF
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