ADAU1772是一款具有四个输入和两个输出的编解码器，内置数字处理引擎，可执行滤波、电平控制、信号电平监控和混合。从模拟输入至DSP内核再到模拟输出的路径经过优化，实现了低延迟，非常适用于降噪耳机。只需添加几个无源元件、晶体和用于引导的EEPROM，ADAU1772可提供完整的耳机解决方案。

应用
? 降噪耳机、耳机和头戴式耳机
? 蓝牙ANC耳机、耳机和头戴式耳机
? 个人导航设备
? 数码相机和数码摄像机

This evaluation board provides full access to all analog and digitalI/Os on the ADAU1772. The ADAU1772 core is controlled byAnalog Devices, Inc., SigmaStudio™ software, which interfaces tothe board via a USB connection. This evaluation board can bepowered by a single AAA battery, by the USB bus, or by a single3.8 V to 6 V supply; any of these are regulated to the voltagesrequired on the board. The PC board is a 4-layer design, with asingle ground plane and a single power plane on the inner layers.The board contains connectors for external microphones andspeakers. The master clock can be provided externally or by theon-board 12.288 MHz passive crystal.

ADI公司的USBi “USB Interface” (EVAL-ADUSB2EBZ)接口板可用于连接PC的USB端口和SigmaDSP硬件的数据输入引脚。该接口可用于任意评估板，包括外部SPI/I2C连接头(Aardvark Header)。EVAL-ADUSB2EBZ板支持SPI和I2C通信（用户可选），可采用3.3V或1.8V作为IOVDD电源。USBi接口采用电脑USB端口供电。