AD1984:  HD Audio CODEC, 4 channels, up to 96 dB performance, digital mic   support
     The AD1984 audio CODEC provides superior High Definition audio quality that   exceeds Vista Premium performance. There are four 192kHz DACs, four 192kHz   ADC's, SP/DIF output, a four-channel digital microphone interface, Digital Beep   and PCBeep. These features make the AD1984 the right choice for premium desktop   and notebook PCs where performance is key.
     AD1984 特点
     
       - 96+ dB audio outputs, 90+ dB audio inputs 
 
       - 4 digital microphone channels with support for multiple vendor's microphones 
 
       - Supports multi-streaming on playback and record 
 
       - Analog mixer supports recording and playback of signals from multiple analog   input sources 
 
       - Advanced Power Management Modes 
 
       - Analog and Digital PCBeep
 
       - Drivers for W2K, W2K3, WINXP, Vista, and Linux (from ALSA); WHQL   pre-qualified 
 
       - Improved VOIP and speech recognition experience with microphone noise   reduction, beam forming, and echo cancellation technologies 
 
       - Superior stereo audio sound quality from Sonic Focus' audio enhancement   technologies 
 
      
     AD1984 功能框图
     
     AD1984  应用技术支持与电子电路设计开发资源下载
     
       - AD1984 数据手册DataSheet 下载 . PDF
 
       - ADI 模拟器件公司比较器产品选型指南 . PDF
 
       - Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF