A 20-bit decimator IC for high-resolution audio A/D conversion

摘要: A decimator IC has been developed for use with noise-shaping front-end coders to implement a very-high-resolution A/D (analog-to-digital) converter intended primarily professional audio applications. The contains multirate filter structure obtain decimation ratio of 128:1 80 dB stopband rejection. An input wordlength 6 bits and an output 20 allow signal-to-noise ratios in excess 110 be obtained the appropriate coder