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.

• 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

• Audio input type
• Digital Input
• Architecture
• Class-D
• Speaker channels (Max)
• Stereo
• Power stage supply (Max) (V)
• 24
• Power stage supply (Min) (V)
• 8
• Load (Min) (ohms)
• 6
• Output power (W)
• 20
• SNR (dB)
• 106
• THD + N @ 1 kHz (%)
• 0.06
• Iq (Typ) (mA)
• 29
• Control interface
• Hardware, Software
• Closed/open loop
• Open
• Analog supply (Min) (V)
• 3
• Analog supply (Max) (V)
• 3.6
• Sampling rate (Max) (kHz)
• 48
• Operating temperature range (C)
• 0 to 85

TAS5709A的完整型号有：TAS5709AGPHP、TAS5709AGPHPR、TAS5709APHP、TAS5709APHPR，以下是这些产品的关键参数及官网采购报价：

TAS5709AGPHP，工作温度：0 to 85，封装：HTQFP (PHP)-48，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TAS5709AGPHP的批量USD价格：USD（1000+）

TAS5709AGPHPR，工作温度：0 to 85，封装：HTQFP (PHP)-48，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TAS5709AGPHPR的批量USD价格：USD（1000+）

TAS5709APHP，工作温度：0 to 85，封装：HTQFP (PHP)-48，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TAS5709APHP的批量USD价格：3.323（1000+）

TAS5709APHPR，工作温度：0 to 85，封装：HTQFP (PHP)-48，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TAS5709APHPR的批量USD价格：2.812（1000+）

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