Home Audio Audio amplifiers Speaker amps
Home
Audio
Audio amplifiers
Speaker amps

TAS3251

ACTIVE

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

Order now
Data sheet

TAS3251

ACTIVE
Data sheet Order now

Product details

Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 38 Power stage supply (min) (V) 12 Load (min) (Ω) 1 Output power (W) 175 SNR (dB) 108 THD + N at 1 kHz (%) 0.01 Iq (typ) (mA) 12.5 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 Sampling rate (max) (kHz) 96 PSRR (dB) 60 Operating temperature range (°C) 0 to 70
Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 38 Power stage supply (min) (V) 12 Load (min) (Ω) 1 Output power (W) 175 SNR (dB) 108 THD + N at 1 kHz (%) 0.01 Iq (typ) (mA) 12.5 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 Sampling rate (max) (kHz) 96 PSRR (dB) 60 Operating temperature range (°C) 0 to 70
HSSOP (DKQ) 56 190.647 mm² 18.42 x 10.35
  • 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
  • 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

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.

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.
filter Find other Speaker amps
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 5
Type Title Date
* Data sheet TAS3251 175-W Stereo, 350-W Mono Ultra-HD Digital-Input Class-D Amplifier with Advanced DSP Processing datasheet (Rev. B) PDF | HTML 28 May 2020
Application note Power Amplifiers for Constant Voltage Audio Systems PDF | HTML 06 Sep 2022
Technical article How smart amps are bringing high-fidelity audio into the smart home PDF | HTML 03 May 2021
Application note TAS3251 process flows (Rev. A) 22 Jan 2019
User guide TAS3251 Evaluation Module (Rev. B) 10 Jan 2019

Design & development

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

Evaluation board

TAS3251EVM — TAS3251 175W Stereo / 350W Mono Ultra-HD Digital-In Class-D Evaluation Module

The TAS3251 Ultra-HD audio evaluation module demonstrates the TAS3251 integrated circuit from Texas Instruments. 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 (...)

User guide: PDF
Not available on TI.com
Support software

TAS3251-SW — TAS3251 Software

Supported products & hardware

Supported products & hardware

Products
Speaker amps
TAS3251 — 175-W stereo, 350-W mono, 12- to 38-V supply, digital input Class-D Smart Audio Amplifier
Hardware development
Evaluation board
TAS3251EVM — TAS3251 175W Stereo / 350W Mono Ultra-HD Digital-In Class-D Evaluation Module
Request
Calculation tool

LCFILTER-CALC-TOOL — Class-D LC Filter Designer

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 (...)
Supported products & hardware

Supported products & hardware

Products
Speaker amps
TAS3251 — 175-W stereo, 350-W mono, 12- to 38-V supply, digital input Class-D Smart Audio Amplifier TPA3255 — 315-W stereo, 600-W mono, 18- to 53.5-V supply, analog input Class-D audio amplifier
Hardware development
Evaluation board
TAS5634EVM — TAS5634 300W Stereo/600W Mono HD Digital Input, 58V Class-D Amplifier Power Stage Evaluation Module TPA3221EVM — TPA3221 100W Stereo/ 200W Mono HD Analog-In Class-D Amplifier Evaluation Module TPA3244EVM — TPA3244 60W Stereo / 110W Peak Ultra-HD Analog-In Audio Class-D Pad-Down Module TPA3245EVM — TPA3245 115W Stereo / 230W Mono Ultra-HD Analog-In Audio Class-D Module TPA3250D2EVM — TPA3250 70W Stereo / 130W Peak Ultra-HD Analog-In Audio Class-D Pad-Down Module TPA3251EVM — TPA3251 175W Stereo / 350W Mono Ultra-HD, Analog-In Class-D Module TPA3255EVM — TPA3255 315W Stereo / 600W Mono Ultra-HD Analog-In Audio Class-D Module
Software
Design tool
LCFILTER-CALC-TOOL — Class-D LC Filter Designer
Download
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 (...)
Request
Package Pins CAD symbols, footprints & 3D models
HSSOP (DKQ) 56 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos