ADI ADAU1787Z低功耗音频DSP解决方案
ADI公司的ADAU1787Z是集成了两个低功耗音频DSP的和两个输入和一个输出的CODEC,模拟输入到DSP核到模拟输出的通路进行优化,以到到低等待和非常适合于手持设备的噪音消除.仅需要增几个外接的无源元件, ADAU1787Z就提供噪音消除耳机解决方案.ADAU1787Z具有可编程FastDSP音频处理引擎,高达768kNz取样速率.器件具有双四元滤波器,限幅器,音量控制和混合器,28位SigmaDSP音频处理核,高达50MIPS性能,低等待24位ADC和DAC,96dB SNR(信号通过带A加权滤波器的PGA和ADC),105dB组合SNR(信号通过带A加权滤波器DAC和耳机),频率8kHz到768kHz的串口fSYNC,模拟输入到模拟输出的群时延5μs(取样频繁768kHz),PLL支持30kHz到27MHz的任何输入时钟速率,具有全双工4路ASRC,主要用于噪音消除的手持设备和耳机,蓝牙ANC手持设备和耳机,个人导航设备(PNA),数码相机和视频摄像机,乐器效应处理器,多媒体扬声器系统和智能手机.本文介绍了ADAU1787Z主要特性,功能框图,以及评估板EVAL-ADAU1787Z主要特性,电路图,材料清单和PCB设计图.
The ADAU1788 is a codec with two inputs and one output that incorporates two digital signal processors (DSPs). The path from the analog input to the DSP core to the analog output is optimized for low latency and is ideal for noise cancelling headsets. With the addition of just a few passive components, the ADAU1788 provides a noise cancelling headphone solution.
Note that throughout this data sheet, multifunction pins, such as BCLK_0/MP1, are referred to either by the entire pin name or by a single function of the pin, for example, BCLK_0, when only that function is relevant.
ADAU1787Z主要特性:
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