Accurate Multi-bit Feedback DAC Dedicated to High-speed Continuous-time DS Converters

Abstract : This paper presents the behavioral modeling and circuit design of an accurate multi-bit DAC dedicated to high speed Continuous-time DS converters. The multi-bit DAC element mismatch is modeled, demonstrating that the non-linearities coming from the feedback DACs is awful for Continuous-time DS modulators. The proposed DAC is dimensioned in order to achieve best matching, reaching an unit current source relative standard deviation up to 0.7%. A full high-speed Continuous-time DS converter is implemented using the accurate DAC, achieving a SNR of 76 dB in a widebandwidth of 20 MHz.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-00448816
Contributor : Equipe Conception de Circuits <>
Submitted on : Wednesday, January 20, 2010 - 10:46:38 AM
Last modification on : Wednesday, October 9, 2019 - 9:30:27 PM

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  • HAL Id : hal-00448816, version 1

Citation

André Mariano, Cédric Majek, Dominique Dallet, Jean-Baptiste Begueret, Yann Deval. Accurate Multi-bit Feedback DAC Dedicated to High-speed Continuous-time DS Converters. Latin American Symposium on Circuits and Systems, Feb 2010, Iguaçu Falls, Brazil. pp.64-69. ⟨hal-00448816⟩

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