The TAS5711 is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and data rates. A fully programmable data path routes these channels to the internal speaker drivers.

The TAS5711 is an I2S slave-only device receiving all clocks from external sources. The TAS5711 operates with a PWM carrier between 384-kHz switching rate and 352-KHz switching rate depending on the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20Hz to 20 kHz.

• Audio Input/Output
  • 20-W Into an 8- Load From an 18-V Supply
  • Wide PVDD Range, From 8 V to 26 V
  • Efficient Class-D Operation Eliminates Need for Heatsinks
  • One Serial Audio Input (Two Audio Channels)
  • 2.1 Mode (2 SE + 1 BTL)
  • 2.0 Mode (2 BTL)
  • Single-Filter PBTL Mode Support
  • I2C Address Selection Pin (Chip Select)
  • Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)
• Audio/PWM Processing
  • Independent Channel Volume Controls With 24-dB to Mute
  • Separate Dynamic Range Control for Satellite and Subchannels
  • 21 Programmable Biquads for Speaker EQ and Other Audio Processing Features
  • Programmable Coefficients for DRC Filters
  • DC Blocking Filters
  • Support for 3D Effects
• General Features
  • Serial Control Interface Operational Without MCLK
  • Factory-Trimmed Internal Oscillator for Automatic Rate Detection
  • Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package
  • Thermal and Short-Circuit Protection
  • Support for AD or BD Mode
• Benefits
  • Up to 90% Efficient
  • AD and BD Filter Mode Support
  • SNR: 106 dB, A-Weighted
  • EQ: Speaker Equalization Improves Audio Performance
  • DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening.
  • Separate DRC for Satellite and Subchannels
  • Autobank Switching: Preload Coefficients for Different Sample Rates. No Need to Write new Coefficients to the Part When Sample Rate Changes.
  • Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor Intervention
• Requires Only 3.3 V and PVDD
• APPLICATIONS
  • Television
  • iPod™ Dock
  • Sound Bar

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