Title :
A 20-bit decimator IC for high-resolution audio A/D conversion
Author :
Adams, Robert W. ; Frenkil, Gerald ; Gottfried, Don ; Pinelle, Paul
Abstract :
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 for professional audio applications. The IC contains a multirate filter structure to obtain a decimation ratio of 128:1 with 80 dB of stopband rejection. An input wordlength of 6 bits and an output wordlength of 20 bits allow signal-to-noise ratios in excess of 110 dB to be obtained with the appropriate front-end coder
Keywords :
analogue-digital conversion; audio equipment; digital filters; digital integrated circuits; 110 dB; 20 bit; ADC; audio A/D conversion; decimator IC; digital IC; high-resolution; multirate filter structure; noise-shaping front-end coders; professional audio applications;
Conference_Titel :
Custom Integrated Circuits Conference, 1989., Proceedings of the IEEE 1989
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/CICC.1989.56795
