AKM AK4414 32位ADC DVD音频解决方案

AKM 公司的AK4414是32位ADC,包括最近开发的32位8x数字滤波器,具有更好的音质,更低失真和更宽动态范围,128x过采样,采样速率30kHz到216kHz,采用216kHz PCM数据和蔼1比特DSD数据,非常适合包括DVD音频和SACD在内的各种应用.本文介绍了AK4414主要特性,框图以及评估板AKD4414-SA 主要功能和电路图.

AK4414 is a 32-bit DAC, which corresponds to BD systems. An internal circuit includes newly developed 32bit Digital Filter for better sound quality achieving low distortion characteristics and wide dynamic range. The AK4414 has full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4414 accepts 216kHz PCM data and 1-bit DSD data, ideal for a wide range of applications including DVD-Audio and SACD.

AK4414主要特性:

• 128x Over sampling
• Sampling Rate: 30kHz ∼ 216kHz
• 32Bit 8x Digital Filter
- Ripple: ±0.005dB, Attenuation: 80dB
- High Quality Sound Short Delay Option; GD=7/fs and GD=5.5/fs
- Sharp Roll-Off Filter
- Slow Roll-Off Filter
• High Tolerance to Clock Jitter
• Low Distortion Differential Output
• DSD data input
• Digital De-emphasis for 32, 44.1, 48kHz sampling
• Soft Mute..

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