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TAS5704 - 产品图解:
TAS5704-具有 EQ、DRC 和反馈(硬件控制)的 20W 立体声数字音频功率放大器
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TI产品 - TAS5704介绍
TAS5704 - 具有 EQ、DRC 和反馈(硬件控制)的 20W 立体声数字音频功率放大器

TAS5704是TI公司的一款无产品,TAS5704是具有 EQ、DRC 和反馈(硬件控制)的 20W 立体声数字音频功率放大器,本页介绍了TAS5704的产品说明、应用、特性等,并给出了与TAS5704相关的TI元器件型号供参考。

TAS5704 - 具有 EQ、DRC 和反馈(硬件控制)的 20W 立体声数字音频功率放大器 - 无 - 中/高功率D类放大器 - TI公司(Texas Instruments,德州仪器)

产品描述

The TAS5704 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 accepting a wide range of input data and clock rates. A hardware configurable data path allows these channels to be routed to the internal speaker drivers or output via the subwoofer PWM outputs.

The TAS5704 is a slave-only device receiving all clocks from external sources. The TAS5704 operates at a 384-kHz switching rate for 32-, 48-, 96-, and 192-kHz data, and at a 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 20Hz to 20 kHz.

The closed-loop architecture of the TAS5704 provides several benefits. The high power supply rejection enables superior audio performance from a noisy, low cost supply. The high damping factor allows tighter control over speaker movement resulting in an improved bass response. Finally, switching edge rate control lowers EMC emissions without sacrificing audio performance.

产品特性

  • Audio Input/Output
    • 20-W into an 8- Load From an 18-V Supply
    • Two Serial Audio Inputs (Four Audio Channels)
    • Supports Multiple Output Configurations:
      • 2-Ch Bridged Outputs (20 W × 2)
      • 4-Ch Single-Ended Outputs (10 W × 4)
      • 2-Ch Single-Ended + 1-Ch Bridged (2.1) (10 W × 2 + 20 W)
  • Closed Loop Power Stage Architecture
    • Improved PSRR Reduces Power Supply Performance Requirements
    • Higher Damping Factor Provides for Tighter, More Accurate Sound With Improved Bass Response
    • Lower EMC Emissions
    • Output Power is Independent of Supply Voltage Variation
  • Wide PVCC Range From (10V to 26V)
  • Supports 32-kHz–192-kHz (DVD-Audio) Sample Rates (LJ/RJ/I2S)
  • Line-Level Subwoofer PWM Outputs
  • Audio/PWM Processing (Hardware Controlled)
    • 4-Step Gain Control (-3dB, 3dB, 9dB, 12dB)
    • Soft Mute Control (50% Output Duty Cycle)
  • Factory-Trimmed Internal Oscillator Enables Automatic Detection of Incoming Sample Rates
  • Thermal and Short-Circuit Protection

System Two, Audio Precision are trademarks of Audio Precision, Inc.

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