TI TAS5825M 38W立体声数字输入D类音频放大器解决方案

TI公司的TAS5825M是4.5V-26V 38W立体声数字输入D类音频放大器,集成了高达192kHz架构的音频处理器,功能强大的音频DSP核支持几种先进音频处理流,采用48kHz或96kHz架构,集成的取样速率转换器(SRC)检测输入取样速率变化,支持32, 44.1, 48, 88.2, 96, 192 kHz取样速率,3线数字音频接口,功率效率大于90%,在PVDD=12V是静态电流小于20A,支持多种输出配置,主要用于DTV, HDTV, UHD和多种用处监视器,条形音箱和超低音音箱,笔记本/PC扬声器,无线/蓝牙扬声器以及智能扬声器.本文介绍了TAS5825M主要特性,功能框图,应用电路以及评估模块TAS5825MEVM主要特性,电路图,材料清单和PCB设计图.
The TAS5825M is a stereo high-performance closedloopClass-D with integrated audio processor with upto 192-kHz architecture.
The powerful audio DSP core supports severaladvanced audio process flows. With 48-kHz or 96-kHz architecture, an integrated SRC (Sample rateconvertor) detects the input sample rate change.
Then auto converts to the target sample rate whichDSP is running to avoid any audio artifacts. Theseprocess flows support: 2×15 BQs, 3-Band DRC,FullbandAGL (Automatic Gain Limiter), Smart AmplifierAlgorithm (Thermal and Excursion Protection), Bassenhancement, Spatializer,THD manager, PVDDTracking and Thermal Foldback. The 192-kHzprocess flow offers Full-band AGL and ThermalFoldback .
TAS5825M主要特性:
1• Flexible Audio I/O:
– Supports 32, 44.1, 48, 88.2, 96, 192 kHzSample Rates
– I2S, LJ, RJ, TDM, SDOUT for AudioMonitoring, Sub-Channel or Echo Cancellation
– Supports 3-Wire Digital Audio Interface (NoMCLK Required)
• High-Efficiency Class-D Operation
– > 90% Power Efficiency, 90 mΩRDSon
– Low Quiescent Current, <20 mA at PVDD=12V
• Supports Multiple Output Configurations
– 1 × 53 W, 1.0 Mode (4-Ω, 22V, THD+N=1%)
– 1 × 65 W, 1.0 Mode (4-Ω, 22V, THD+N=10%)
– 2 × 30 W, 2.0 Mode (8-Ω, 24 V, THD+N=1%)
– 2 × 38 W, 2.0 Mode (8-Ω, 24 V, THD+N=10%)
• Excellent Audio Performance:
– THD+N ≤ 0.03% at 1 W, 1 kHz, PVDD = 12 V
– SNR ≥ ...