TAS5709A - 20-W Stereo I2S Audio Amplifier with Speaker EQ and 2-Band DRC

The TAS5709 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 TAS5709 is a slave-only device receiving all clocks from external sources. The TAS5709 operates with a PWM carrier between a 384-kHz switching rate and a 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 20 Hz to 20 kHz.

The TAS5709A is identical in function to the TAS5709, but has a unique I²C device address. The address of the TAS5709 is 0x36. The address of the TAS5709A is 0x3A.

Products containing the "TAS5709A" keyword are: TAS5709AGPHP , TAS5709AGPHPR , TAS5709APHP , TAS5709APHP , TAS5709APHPR , TAS5709APHPR , TAS5709APHPRG4

• Audio Input/Output
  • 20-W Into an 8- Load From an 18-V Supply
  • Wide PVDD Range, From 8 V to 24 V
  • Efficient Class-D Operation Eliminates Need for Heatsinks
  • Requires Only 3.3 V and PVDD
  • One Serial Audio Input (Two Audio Channels)
  • Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I²S)
• Audio/PWM Processing
  • Independent Channel Volume Controls With 24 dB to Mute
  • Soft Mute (50% Duty Cycle)
  • Programmable 2-Band Dynamic Range Control
  • 22 Programmable Biquads for Speaker EQ and Other Audio-Processing Features
  • Programmable Coefficients for DRC Filters
  • Programmable Input and Output Mixers
  • DC Blocking Filters
  • Support for 3D Effects
  • Pseudo Bass Support
• 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
• Benefits
  • EQ: Speaker Equalization Improves Audio Performance
  • DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening
  • Two-Band DRC: Sets Two Different Thresholds for Low- and High-Frequency Content
  • 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