TAS5705 - 20-W Stereo I2S Audio Power Amplifier with Speaker EQ and DRC

The TAS5705 is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. Two serial data inputs allow processing of up to four discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and clock rates. A fully programmable data path allows these channels to be routed to the internal speaker drivers or output via the line-level subwoofer or headphone PWM outputs.

The TAS5705 is a slave-only device receiving clocks from external sources. The TAS5705 operates at a 384-kHz switching rate for 32-, 48-, 96-,and 192-kHz data and 352.8-kHz switching rate for 44.1-, 88.2- and 176.4-kHz data. The 8× oversampling combined with the fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.

Products containing the "TAS5705" keyword are: TAS5705 , TAS5705EVM2 , TAS5705EVM2 , TAS5705PAP , TAS5705PAP , TAS5705PAPG4 , TAS5705PAPR , TAS5705PAPR , TAS5705PAPRG4

• Audio Input/Output
  • 20-W Into an 8- Load From an 18-V Supply
  • Wide Power-Supply Range From (8 V to 23 V)
  • Efficient Class-D Operation Eliminates Need for Heat Sinks
  • Requires Only Two Power-Supply Rails
  • Two Serial Audio Inputs (Four Audio Channels)
  • Supports 32-kHz–192-kHz Sample Rates (LJ/RJ/I²S)
  • Headphone PWM Outputs
  • Subwoofer PWM Outputs
• Audio/PWM Processing
  • Independent Channel Volume Controls With 24-dB to –100-dB Range
  • Soft Mute (50% Duty Cycle)
  • Programmable Dynamic Range Control
  • 16 Adaptable Biquads for Speaker EQ
    • Seven Biquads for Left and Right Channels
    • Two Biquads for Subwoofer Channel
  • Adaptive Coefficients for DRC Filters
  • Programmable Input and Output Mixers
  • DC Blocking Filters
  • Loudness Compensation for Subwoofer
  • Automatic Sample Rate Detection and Coefficient Banking for DRC and EQ
• General Features
  • Serial Control Interface Operational Without MCLK
  • Factory-Trimmed Internal Oscillator Enables Automatic Detection of Incoming Sample Rates
  • Thermal and Short-Circuit Protection
• Benefits
  • EQ: Speaker Equalization Improves Audio Performance
  • DRC: Dynamic Range Compression. Enables Power Limiting, Speaker Protection, Easy Listening, Night-Mode Listening
  • Autobank Switching: Preload Coefficients for Different Sample Rates. No Need to Write Any Coefficients to the Part When Sample Rate Changes.
  • Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor Intervention

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