AKM AK5373带USB 2.0接口立体声模数转换解决方案

AKM 公司的AK5373是带USB 2.0接口的立体声模数转换器（ADC），包括有USB串行接口引擎，USB收发器，音频处理区块，端点以及24位立体声音频ADC。集成的PLL可使用多种取样频率，并集成了麦克风放大器和可编程增益放大器。工作电压3.0V-3.6V。本文介绍了AK5373主要特性，方框图，内部ADC流模式，外部音频处理模式以及系统连接框图，AKD5373-A评估板方框图和电路图与元件布局图。

The AK5373 is a stereo A/D converter with a USB 2.0 interface. The device includes an integrated USB serial interface engine, a USB transceiver, an audio class processing block, endpoints, and a 24-bit stereo audio ADC. An integrated PLL enables the use of multiple sampling frequencies. A microphone amplifier and an integrated programmable gain amplifier are available for processing low-level signals from an analog microphone element. An external EEP-ROM is used to store the descriptor information.

The AK5373 is housed in a 48-pin package. It is a low power device, operating from +3.3V, and consuming just 100mW in active mode and less than 100μA in suspend mode.

AK5373主要特性：

USB 2.0 compliant (full speed audio class)

USB audio controller

USB serial interface engine

Audio class encoder/decoder

USB synchronization

Synchronous type (synchronize with 1ms SOF)

24-bit stereo A/D converter with mute control
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