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Digital Correction Technique for Multi-Stage Noise-Shaping with an RC-Analog Integrator
Yasuyuki MATSUYA Naohiko YUHKI Yukio AKAZAWA
IEICE TRANSACTIONS on Electronics
Publication Date: 1994/12/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Multimedia, Analog and Processing LSIs)
Category: Analog LSIs
A/D converter, digital correction, multi-stage, noise-shaping, RC-integrator,
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A multi-stage noise-shaping (MASH) A/D converter combining an RC-integrator and a digital correction technique for high accuracy is described. Using 1.2-µm BiCMOS technology, we developed an A/D converter for digital audio with an S/N ratio of over 100 dB. This paper discusses the principles of MASH technology with an RC-integrator, the technique for correcting RC variation, and the experimental results obtained with a fabricated chip.