50-W stereo, 100-W mono, 4.5- to 26.4-V supply, digital input Class-D Smart Audio Amplifier w/ 1SPW


Product details


Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (Max) Stereo Power stage supply (Max) (V) 26.4 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 1 Output power (W) 50 SNR (dB) 106 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 20 Control interface Software Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 26.4 Sampling rate (Max) (kHz) 48 PSRR (dB) 8 Operating temperature range (C) -25 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DCA) 48 101 mm² 12.5 x 8.1 VQFN (RMT) 48 35 mm² 7 x 5 open-in-new Find other Speaker amps


  • PurePath Smart Amp:
    • Optimizes and Protects Dynamic Loudspeakers
    • Bass Q-compensation and Frequency Extension: More Loudness, Bass Enhancement, Better Clarity and Higher Fidelity.
    • Thermal and Excursion Limitation.
  • Stereo Class-D Amplifier With:
    • Wide Power Supply Range: 4.5 V –26.4 V
    • Wide Load Range: 2 Ω – 8 Ω;
    • High output current: 2x 7.5 A
    • Peak output power 2x 50 W/4 Ω
    • Continuous Power: 2x 20 W w/o heat sink
    • Click and Pop free: Power, Mute and Standby ON/OFF
    • Low Output Noise: <60 µVrms at 12 V-supply, <90 µVrms at 24-V supply
    • Low THD+N: <0.02% at 1 W/4 Ω, 1 kHz
    • Thermal, Over-Current and Short-Circuit Protected
  • Configurable Digital Audio Processor.
    • Down Mixing and Custom EQ with 10 BiQuads
  • Digital Audio Interface: I2S or TDM input w.
    • 44.1 kHz and 48 kHz FS
    • Configurable Digital Output
  • Multisegment DAC with Excellent Jitter Suppression
  • Integrated High-Performance Audio PLL
  • I2C control
  • 48-pin PowerPAD™ HTSSOP or VQFN Package

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The TAS576xM PurePath Smart Amp enhance the bass, sound fidelity and provide more loudness and at the same time drive a speaker to its thermal and mechanical limits.

The TAS576xM contains two BTL class-D amplifiers – with up to 2x50W peak into 4Ω. The amplifier is thermally designed to fit with the typical speaker so it can handle high peaks for the time it takes the speaker voice-coil to heat up, and then it lowers the average power to safe limits.

The wide supply range of 4.5 V to 26.4 V enables the use of a wide range of different power supply options from 2-cell Li-Ion batteries to fixed 24 V supply.

TI’s PurePath Smart Amp technology allow speakers to be driven with more peak power than their average power rating, without fear of damage to the speaker through over excursion or thermal-overload.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet TAS576xM 2x50-W/4-Ω PurePath Smart Amp datasheet (Rev. D) Oct. 10, 2018
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application note Getting Started with Smart Amp Development (Rev. D) Mar. 01, 2017
Application note PurePath™ Smart Amp for Laptops (Rev. A) Mar. 10, 2015
Application note Audio Characterization Primer Aug. 09, 2014
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013

Design & development

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

Hardware development


The PurePath™ Smart Amp speaker characterization board combined with the PurePath™ Console graphical user interface (GUI) creates a complete stand-alone system that is used to generate a digital model of speaker thermal, excursion and acoustic parameters. It outputs parameters to be loaded into (...)

  • GUI driven PurePath™ Console speaker characterization and tuning tool suite
  • Complete stand-alone system. Nothing else required for speaker characterization.
  • Full IV sense feedback for speaker characterization only – TAS5766M is a feed forward algorithm in operation
  • Export parameters to either EVM or (...)

The TAS5766MRTMEVM allows evaluation of the TAS5766M and TAS5768M family of PurePath™ Smart Amp closed-loop, I2S-input amplifiers. It is populated with two TAS5766MRMT (48-pin QFN package) devices which allow operation from power supply voltages from 4.5V to 26.4V.

When combined with a (...)

  • PurePath™ Smart Amp technology that maximizes audio performance while protecting the speaker against thermal and excursion damage
  • High Output Current (7.5A) to deliver high peak power to speakers
  • GUI control via PurePath™ Console
  • PurePath™ Console Mother Board (PurePath-CMBEVM) provides flexible input (...)

Design tools & simulation

SLAM221.ZIP (105 KB) - IBIS Model
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 (...)
  • 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
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (DCA) 48 View options
VQFN (RMT) 48 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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