TAS3251

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175-W stereo, 350-W mono, 12- to 38-V supply, digital input Class-D Smart Audio Amplifier

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Product details

Parameters

Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (Max) Stereo Power stage supply (Max) (V) 38 Power stage supply (Min) (V) 12 Load (Min) (ohms) 1 Output power (W) 175 SNR (dB) 108 THD + N @ 1 kHz (%) 0.01 Iq (Typ) (mA) 12.5 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 10.8 Analog supply (Max) (V) 13.2 Sampling rate (Max) (kHz) 96 PSRR (dB) 60 Operating temperature range (C) 0 to 70 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

  • Flexible Audio Inputs
    • I2S, TDM, Left-Justified, Right-Justified
    • 32 kHz, 44.1 kHz, 48 kHz, 96 kHz
    • Supports 3-Wire Digital Input (No MCLK)
  • Total Output Power at 10% THD+N
    • 175-W Stereo into 4 Ω in BTL Configuration
    • 220-W Stereo into 3 Ω in BTL Configuration
    • 350-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1% THD+N
    • 140-W Stereo into 4 Ω in BTL Configuration
    • 175-W Stereo into 3 Ω in BTL Configuration
    • 285-W Mono into 2 Ω in PBTL Configuration
  • Advanced Integrated Closed-Loop Design
    • Ultra Low 0.01% THD+N at 1 W Into 4 Ω
    • <0.01% THD+N to Clipping
    • 60 dB PSRR (BTL, No Input Signal)
    • <95 µV Output Noise (A-Weighted)
    • >108 dB SNR (A-Weighted)
  • Fixed-Function Processing Features
    • SmartEQ (Up To 15x BiQuads Per Channel)
    • Crossover EQ (2x 5 BiQuads)
    • 3-Band Advanced DRC + AGL
    • Dynamic EQ and SmartBass
    • Sample Rate Conversion
  • Control Features
    • I2C Software Mode Control
    • Address Select Pin
  • 90% Efficient Class-D Operation (4 Ω)
  • Wide 12-V to 36-V Supply Voltage Operation
  • Integrated Protection with Error Reporting: Undervoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping detection, Overtemperature Warning and Shutdown and DC Speaker Protection

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Description

TAS3251 is a digital-input, high-performance Class-D audio amplifier that enables true premium sound quality with Class-D efficiency. The digital front-end features a high-performance Burr-Brown™ DAC with integrated DSP for advanced audio processing, including SmartAmp and SmartEQ. The first high-power single-chip solution reduces overall system solution size and cost. The DSP is supported by TI PurePath™ Console Graphical tuning software for quick and easy speaker tuning and control. The Class-D power stage features advanced integrated feedback and proprietary high-speed gate drive error correction for ultra-low distortion and noise across the audio band. The device operates in AD-mode and can drive up to 2 x 175 W into 4 Ω load and 2 x 220 W into 3 Ω load.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TAS3251 175-W Stereo, 350-W Mono Ultra-HD Digital-Input Class-D Amplifier with Advanced DSP Processing datasheet (Rev. B) May 28, 2020
Application notes TAS3251 process flows (Rev. A) Jan. 22, 2019
User guides TAS3251 Evaluation Module (Rev. B) Jan. 10, 2019

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
249
Description
To get started:

Step 1: Hardware
Purchase the TAS3251 Evaluation Module
If you intend to use Smart Amp features, purchase the Speaker Characterization Board for PurePath™ Audio Smart Amp 

Step 2: Software
Request access to PurePath™ Console 3 and TAS3251 Software 
If you intend to use Smart Amp features,  (...)

Features
  • Stereo, Mono, and Two-way speaker configurations
  • Audio Inputs: USB, Optical SPDIF, COAX SPDIF, Direct I2S or TDM
  • Audio Sample Rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
  • Works with PurePath™ Console 3 for advanced tuning
  • Double-sided, plated-through, 2 oz. Cu 2 layer PCB layout

Software development

SUPPORT SOFTWARE Download
TAS3251 Software
TAS3251-SW

Design tools & simulation

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
  • (...)
CIRCUIT DESIGNS Download
Class-D LC Filter Designer
LCFILTER-CALC-TOOL — Calculate and design audio Class-D LC filters in minutes using the Class-D LC Filter Designer.  Select from 4 different filter types based on Class-D output, switching topology and performance.  Input corner frequency and quality (Q) factor to fine tune the audio frequency response.  (...)
Features
  • Calculate LC filter inductor and capacitor values quickly
  • Select from 4 different Class-D filter types
  • Tune frequency response with corner frequency and quality factor (Q) inputs
  • Verify and graph filter response with multiple speaker loads

CAD/CAE symbols

Package Pins Download
HSSOP (DKQ) 56 View options

Ordering & quality

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