1. A Power-Optimal Design Methodology for High-Resolution Low-Bandwidth SC \Delta\Sigma Modulators.
- Author
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Porrazzo, Serena, Cannillo, Francesco, Van Hoof, Chris, Cantatore, Eugenio, and van Roermund, Arthur H. M.
- Subjects
- *
BANDWIDTHS , *BROADBAND communication systems , *CAPACITORS , *ANALOG-to-digital converters , *COMPLEMENTARY metal oxide semiconductors - Abstract
In this paper, a methodology for the power-optimal design of high-resolution low-bandwidth switched-capacitor \Delta\Sigma modulators ( \Delta\Sigma\Ms) is presented. The most power-efficient \Delta\Sigma architecture is identified among single-loop feedback and feedforward topologies with different loop orders N, oversampling ratios OSR, and quantizer resolutions B. Based on this study, an experimental prototype has been implemented in a 0.18- \mu\m CMOS process. It achieves a signal-to-noise ratio of 95 dB over a signal bandwidth fBW of 10 kHz. The prototype operates with a 1.28-MHz sampling rate and consumes 210 \mu\W from a 1.8-V supply. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
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