TAS3251 175W-Stereo, 350W-Mono, Ultra-HD Digital-Input Class-D Amplifier | TI.com

TAS3251 (ACTIVE) 175W-Stereo, 350W-Mono, Ultra-HD Digital-Input Class-D Amplifier

 

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.

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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Parametrics

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Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Output power (W) Load (Min) (ohms) SNR (dB) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) Power to parallel bridge tied load (Max) (W) Sampling rate (Max) (kHz) PSRR (dB) Operating temperature range (C) Rating
TAS3251 Order now Digital Input     Class-D
Smart Amp    
Stereo     12     38     175     1     108     0.01       Hardware     Closed     10.8     13.2     350     96     60     0 to 70     Catalog    
TAS5754M Order now Digital Input     Class-D     Stereo     4.5     26.4     40     2     103     0.007     56     Software     Closed     2.9     3.63     75     192       -25 to 85     Catalog    
TAS5756M Order now Digital Input     Class-D     Stereo     4.5     26.4     40     2     104     0.006     56     Software     Closed     4.5     26.4     75     192       -25 to 85     Catalog    
TAS5780M Order now Digital Input     Class-D     Stereo     4.5     26.4     40     3     103     0.2     81.3     Software     Closed     4.5     26.4     40     96       -25 to 85     Catalog    
TAS5782M Order now Digital Input     Class-D
Smart Amp    
Stereo     4.5     26.4     40     3     103