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

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

• 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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