最初由 张俊 发布
[B]那时的进口2000元左右的CD机用的是PCM63，比69差一些。
不知道现在的5080用的是什么IC？ [/B]
PCM63肯定要比PCM69要好，PCM63/P/PK是非常经典的20BIT DAC，PCM69AP/AU是1BIT和18BIT混合DAC，下面是这两个芯片的简要指标：
PCM69
18-BIT RESOLUTION DUAL AUDIO DAC
EXCELLENT THD PERFORMANCE:
0.0025% (-92dB) at F/S, K grade
1.0% (-40dB) at -60dB, K Grade
HIGH S/N RATIO: 110dB typ (IHF-A)
DUAL, CO-PHASE
SINGLE SUPPLY +5V OPERATION
LOW POWER: 75mW typical
CAPABLE OF 16X OVERSAMPLING
AVAILABLE IN SPACE SAVING 16-PIN DIP OR 20-PIN SOIC
OPERATING TEMP RANGE: -25°C TO +85°C
PCM63
COLINEAR 20-BIT AUDIO DAC
NEAR-IDEAL LOW LEVEL OPERATION
GLITCH-FREE OUTPUT
ULTRA LOW -96dB max THD+N (Without External Adjustment)
116dB SNR min (A-Weight Method)
INDUSTRY STD SERIAL INPUT FORMAT
FAST (200ns) CURRENT OUTPUT (±2mA; ±2% max)
CAPABLE OF 16x OVERSAMPLING