Wideband cascade delta-sigma modulator with digital correction for finite amplifier gain effects
Document Type
Article
Date of Original Version
3-19-1998
Abstract
The authors present an alternative approach to reducing the effects of finite amplifier open-loop gain in cascade delta-sigma modulators. The proposed gain compensation is carried out in the digital domain and thus requires no additional analogue circuitry. The method is illustrated by the example of a double third-order cascade circuit which, when properly compensated for finite gain effects, can yield 16-20 bit resolution with oversampling ratios as low as 16-24.
Publication Title, e.g., Journal
Electronics Letters
Volume
34
Issue
6
Citation/Publisher Attribution
Fischer, G., and A. J. Davis. "Wideband cascade delta-sigma modulator with digital correction for finite amplifier gain effects." Electronics Letters 34, 6 (1998): 511-512. doi: 10.1049/el:19980405.
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