Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 18 Power stage supply (min) (V) 4.5 Load (min) (Ω) 2 Output power (W) 45 THD + N at 1 kHz (%) 0.01 Iq (typ) (mA) 155 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 18 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 18 Power stage supply (min) (V) 4.5 Load (min) (Ω) 2 Output power (W) 45 THD + N at 1 kHz (%) 0.01 Iq (typ) (mA) 155 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 18 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
HSSOP (DKQ) 56 190.647 mm² 18.42 x 10.35
  • Advanced Load Diagnostics
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
    • Integrated sine wave Generator
  • Easy to meet CISPR25-L5 EMC specification
  • AEC-Q100 Qualified With the Following Results for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level: 3A
    • Device CDM ESD Classification Level: C4B
  • Audio Inputs
    • 4 Channel Differential Analog Input
    • Four I2C-Controlled Gain Options
    • High Input Impedance for Low Value AC-coupling Capacitor
  • 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
    • 45 W, 10% THD into 2 Ω at 14.4 V
    • 85 W, 10% THD into 1 Ω at 14.4 V PBTL
  • Audio Performance into 4 Ω at 14.4 V, 1 kHz
    • THD+N < 0.01%
    • 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
  • Protection
    • Output Current Limiting
    • Output Short Protection
    • 40 V Load Dump
    • Fortuitous Open Ground and Power Tolerant
    • DC Offset
    • Over Temperature
    • Undervoltage and Overvoltage
  • General Operation
    • 4.5 V to 18 V supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Foldback
  • Advanced Load Diagnostics
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
    • Integrated sine wave Generator
  • Easy to meet CISPR25-L5 EMC specification
  • AEC-Q100 Qualified With the Following Results for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level: 3A
    • Device CDM ESD Classification Level: C4B
  • Audio Inputs
    • 4 Channel Differential Analog Input
    • Four I2C-Controlled Gain Options
    • High Input Impedance for Low Value AC-coupling Capacitor
  • 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
    • 45 W, 10% THD into 2 Ω at 14.4 V
    • 85 W, 10% THD into 1 Ω at 14.4 V PBTL
  • Audio Performance into 4 Ω at 14.4 V, 1 kHz
    • THD+N < 0.01%
    • 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
  • Protection
    • Output Current Limiting
    • Output Short Protection
    • 40 V Load Dump
    • Fortuitous Open Ground and Power Tolerant
    • DC Offset
    • Over Temperature
    • Undervoltage and Overvoltage
  • General Operation
    • 4.5 V to 18 V supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Foldback

The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables a cost optimized solution in a very small 4.5 cm2 PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 100 kHz audio bandwidth.

The TPA6404-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design.

The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions.

The output switching frequency operates above the AM band, which eliminates the AM band interference and reduces the output filter size and cost.

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

The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables a cost optimized solution in a very small 4.5 cm2 PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 100 kHz audio bandwidth.

The TPA6404-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design.

The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions.

The output switching frequency operates above the AM band, which eliminates the AM band interference and reduces the output filter size and cost.

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

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Technical documentation

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Type Title Date
* Data sheet TPA6404-Q1 45-W,​​​ 2-MHz Analog Input -Channel Automotive Class-D Audio Amplifier With Load Dump Protection and I2C Diagnostics datasheet (Rev. A) PDF | HTML 14 Feb 2018
Application brief Diagnostics and Protections in Automotive Audio Systems (Rev. A) 24 Sep 2019
Application note Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) 05 Sep 2019
EVM User's guide TPA6404Q1 EVM User's Guide (Rev. A) 15 Feb 2018
Technical article Why you should use a Class-D audio amplifier in your automotive infotainment syste PDF | HTML 08 Jan 2018

Design & development

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Evaluation board

TPA6404Q1EVM — TPA6404-Q1 50-W, 2-MHz Analog Input 4-Channel Automotive Class-D Audio Amplifier Evaluation Module

The TPA6404Q1EVM evaluation module (EVM) demonstrates the TPA6404-Q1 integrated circuit from Texas Instruments. The TPA6404-Q1 device is a four-channel analog-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 (...)

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 100-dB dynamic range ADC and 106-dB 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 100-dB dynamic range ADC and 106-dB dynamic range DAC TAC5112-Q1 Automotive low-power stereo audio codec with 102-dB dynamic range ADC, 106-dB DAC TAC5211 Low-power, mono audio codec with 118-dB dynamic range ADC and 119-dB dynamic range DAC TAC5212 High-performance stereo audio codec with 118-dB dynamic range ADC and 119-dB 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 106-dB dynamic range TAD5112-Q1 Automotive low-power stereo audio DAC with 106-dB dynamic range TAD5212 Low-power stereo audio DAC with 119-dB dynamic range 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 Low-power high-performance stereo audio ADC with 118-dB dynamic range 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
Simulation model

TPA6404-Q1 IBIS Model

SLOM440.ZIP (23 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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HSSOP (DKQ) 56 Ultra Librarian

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