Resolution of a current-mode algorithmic analog-to-digital converter

Errors limiting the resolution of current-mode algorithmic analog-to-digital converters are mainly related to current mirror operation. While systematic errors can be minimized by proper circuit techniques, random sources are unavoidable. In this paper a statistical analysis of the resolution of a t...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. 1, Fundamental theory and applications Fundamental theory and applications, 2002-10, Vol.49 (10), p.1480-1486
Main Authors: Giustolisi, G., Palumbo, G., Pennisi, S.
Format: Article
Language:English
Subjects:
Analog integrated circuits
Analog-digital conversion
Broadband amplifiers
Circuit topology
CMOS technology
Integrated circuit technology
Mirrors
Optical amplifiers
Optical feedback
Solid state circuits
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Summary:Errors limiting the resolution of current-mode algorithmic analog-to-digital converters are mainly related to current mirror operation. While systematic errors can be minimized by proper circuit techniques, random sources are unavoidable. In this paper a statistical analysis of the resolution of a typical converter is carried out taking into account process tolerances. To support the analysis, a 4-bit ADC, realized in a 0.35-/spl mu/m CMOS technology, was exhaustively simulated. Results were found to be in excellent agreement with theoretical derivations.
ISSN:1057-7122
1558-1268
DOI:10.1109/TCSI.2002.803353