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Product details

Parameters

Audio input type Digital Input Architecture Class-D Speaker channels (Max) 4 Power stage supply (Max) (V) 26.4 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 1 Output power (W) 75 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) 26.4 Power to parallel bridge tied load (Max) (W) 150 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

  • 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

All trademarks are the property of their respective owners.

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Description

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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NEW TAS6421-Q1 ACTIVE Automotive, 75-W, 2-MHz, 1-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump TAS6421-Q1 is our 1-channel automotive Class-D digital input amplifier which implements 2.1MHz switching frequency
TAS6422-Q1 ACTIVE Automotive, 75-W, 2-MHz, 2-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump TAS6422-Q1 is our 2-channel automotive Class-D digital input amplifier which implements 2.1MHz switching frequency

Technical documentation

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
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
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
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 MODELS Download
SLOM433.ZIP (26 KB) - IBIS Model
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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Entry-level head unit display audio with Jacinto™ 6 entry reference design
TIDEP-0097 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive 8 Channel Class D Amplifier with 2.1 MHz Switching Power Supply Reference Design
TIDA-00733 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive 2-MHz Class-D, 4-Channel, 21-W Audio Amplifier in Class AB Form-Factor Reference Design
TIDA-00743 — 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 provides (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HSSOP (DKQ) 56 View options

Ordering & quality

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