A Wideband 6th Order Programmable Bandpass DEM Implementation for a Nyquist DAC

Shantanu Mehta, Brendan Mullane, Vincent O'Brien, Roberto Pelliconi, Christophe Erdmann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a 6th order programmable bandpass dynamic-element-matching (DEM) that shapes the static mismatch error of a Nyquist DAC for any choice of center-frequency. The mismatch error can be shaped over a narrow or wide band, and up to 20% of Fs depending on the target application. This work demonstrates that for a 12-bit Nyquist DAC (5T-7B), the lowest in-band SFDR and IMD3 is 88dB and 80dB respectively, for various configurations of the DEM. The DEM hardware is implemented onto a XILINX FPGA using the System-Generator for DSP™ tool with results obtained for 155MHz Fs.

Original languageEnglish
Title of host publicationICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728160443
DOIs
Publication statusPublished - 23 Nov 2020
Event27th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2020 - Glasgow, United Kingdom
Duration: 23 Nov 202025 Nov 2020

Publication series

NameICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings

Conference

Conference27th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2020
Country/TerritoryUnited Kingdom
CityGlasgow
Period23/11/2025/11/20

Keywords

  • Bandpass
  • DEM
  • Nyquist-DAC
  • Programmable

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