AKM AK4621 24位立体声音频CODEC解决方案
AKM 公司的AK4621是高性能 24位立体声音频CODEC,支持192kHz录音和播放,器件具有两路24位ADC和24位DAC,全差分输入和可选择的数字滤波器, ADC的S/(N+D)为102dB,S/N为 115dB,DAC的S/(N+D)为100dB,S/N为115dB,非常适合用在Pro Audio声卡,数字音频工作站,DVD-R,硬盘,CD-R录音/播放系统和音乐设备录音.本文介绍了AK4621主要特性,方框图, 输入缓冲电路图, 输出外接LPF电路图以及AK4621评估板AKD4621-B方框图和电路图.
The AK4621 is a high performance 24-bit CODEC that supports up to 192kHz recording and playback. The on-board analog-to-digital converter has a high dynamic range due to AKM’s Enhanced Dual-Bit architecture. The DAC utilizes AKM’s Advanced Multi-Bit architecture that achieves low out-of-band noise and high jitter tolerance through the use of Switched Capacitor Filter (SCF) technology. The AK4621 is ideal for Pro Audio sound cards, Digital Audio Workstations, DVD-R, hard disk, CD-R recording/playback systems, and musical instrument recording.
AK4621主要特性:
□ 24-bit 2-channel ADC
- Full Differential Inputs
- Selectable Digital Filter
1. ADC Digital Filter 1 (GD=39/fs)
Passband: 0 ~ 21.8kHz (@fs=48kHz)
Stopband Attenuation: 100dB
2. ADC Digital Filter 2 (GD=14/fs)
Passband: 0 ~ 21.7kHz (@fs=48kHz)
Stopband Attenuation: 80dB
- S/(N+D): 102dB..
