AKM AK4686多路音频CODEC解决方案

AKM公司的 AK4686是多路音频CODEC,包括了一个立体声ADC和两个立体声DAC以及6:1无电容输入选择器和线路驱动驱动器. ADC/DAC接口支持24位输入数据和异步操作.ADC的动态范围96dB,DAC的动态范围100dB,主要用在数字电视(DTV)和家庭影响系统.本文介绍了AK4686主要特性,方框图,典型应用电路以及AKD4686-B评估板功能,方框图以及详细电路图和元件布局图.

AK4686:Multi-channel CODEC with Capless Stereo Selector

The AK4686 is a single chip audio CODEC that includes one stereo ADC and two stereo DACs in addition to the input selector and the line drivers. The interfaces of ADC/DAC can accept up to 24bit input data and support asynchronous operation. Both the input stereo selector and output drivers support ground reference I/O to remove AC-coupling capacitors and reducing external parts. The AK4686 has a dynamic range of 96dB for ADC, 100dB for DAC, and it is well suitable for digital TV and Home theater systems.

AK4686主要特性:

Asynchronous Operation between Port 1(ADC and DAC1) and Port 2 (DAC2)

6:1 Capless Stereo Line Input Selector

24bit Stereo ADC

- 64x Oversampling

- Sampling Rate up to 48kHz

- Linear Phase Digital Anti-Alias Filter

- S/(N+D): 88dB

- Dynamic Range, S/N: 96dB

- Digital HPF for Offset Cancellation

24bit Two Stereo DAC
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