Incremental Delta-Sigma Structures for DC Measurement: an Overview

Janos Markus, Philippe Deval, Vincent Quiquempoix, Jose Silva, Gabor C. Temes
2006 IEEE Custom Integrated Circuits Conference 2006  
In this paper the theoretical operation of incremental (charge-balancing) delta-sigma (∆Σ) converters is reviewed, and the implementation of a 22-bit incremental A/D converter is described. Two different analyses of the first-order incremental converter are presented, and based on these results two extensions to higher-order modulators are proposed. Since line-frequency noise suppression is often important in measurement applications, modulators followed by sinc k filters are also analyzed.
more » ... tions are derived for the estimation of the required number of cycles for a given resolution and architecture. Finally, the design and implementation of a third-order incremental converter with a fourth-order sinc filter is briefly discussed.
doi:10.1109/cicc.2006.320960 dblp:conf/cicc/MarkusDQST06 fatcat:k3fhqg74dzdyjjdypuvhbwzy5y