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AKM AK4480信噪比114dB 32位蓝光盘系统数模转换方案

关键词:消费类电子 组合音响 DAC 蓝光盘系统

时间:2010-02-21 10:12:00       来源:AKM

AKM 公司的AK4480是高性能信噪比达114dB的 32位数模转换器(DAC),包括有新开发的低失真宽动态范围的32位数字滤波器,全差分SCF输出,能接收216kHz PCM数据和1比特DSD数据,非常适合包括蓝光盘系统和SACD在内的各种应用.本文介绍了AK4480主要特性,方框图以及典型应用电路,外接多种低通滤波器电路图.

AK4480: High Performance 114dB 32-Bit DAC

The AK4480 is a 32-bit DAC, which corresponds to Blu-ray Disc systems. An internal circuit includes newly developed 32bit Digital Filter for better sound quality achieving low distortion characteristics and wide dynamic range. The AK4480 has full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4480 accepts 216kHz PCM data and 1-bit DSD data, ideal for a wide range of applications including Blu-ray Discs and SACDs.

AK4480主要特性:

• 128x Over Sampling

• Sampling Rate: 30kHz ∼ 216kHz

• 32Bit 8x Digital Filter

- Ripple: ±0.005dB, Attenuation: 70dB

- Minimum delay option GD=7/fs

- Sharp Roll-off Filter

- Slow Roll-off Filter

• High Tolerance to Clock Jitter

• Low Distortion Differential Output

• DSD Data Input
..

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