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.

• 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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• Audio input type
• Digital Input
• Architecture
• Class-D
• Speaker channels (Max)
• Stereo
• Power stage supply (Max) (V)
• 23
• Power stage supply (Min) (V)
• 8
• Load (Min) (ohms)
• 6
• Output power (W)
• 20
• SNR (dB)
• 105
• THD + N @ 1 kHz (%)
• 0.24
• Iq (Typ) (mA)
• 30
• Control interface
• Hardware, Software
• Closed/open loop
• Open
• Analog supply (Min) (V)
• 3
• Analog supply (Max) (V)
• 3.6
• Sampling rate (Max) (kHz)
• 192
• Operating temperature range (C)
• 0 to 85

TAS5705的完整型号有：TAS5705PAP、TAS5705PAPR，以下是这些产品的关键参数及官网采购报价：

TAS5705PAP，工作温度：0 to 85，封装：HTQFP (PAP)-64，包装数量MPQ：160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TAS5705PAP的批量USD价格：5.297（1000+）

TAS5705PAPR，工作温度：0 to 85，封装：HTQFP (PAP)-64，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TAS5705PAPR的批量USD价格：4.414（1000+）

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