A new mismatch-insensitive 1.5-bit MDAC with unity feedback-factor and enhanced performance

Nuno Pereira, João Goes, Marco Rodrigues, Pedro Faria

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper a novel and mismatch-insensitive 1.5-bit MDAC is proposed. This circuit combines three main techniques that lead to a simulated reduction of the power dissipation of the order of 4 times, when compared to the conventional 1.5-bit MDAC circuit. Simulations also have shown that the proposed 1.5-bit MDAC is capable of achieving an SNDR of around 74 dB, i.e. compatible with 12 bits, corresponding to a 25 dB (4 bits) improvement when compared to the classic 1.5-bit MDAC. It is worth noticing that these results are achieved with a low gain, poor linearity and noisy residue amplifier, as all these innacuracies are cancelled thanks to the techniques employed.

Original languageEnglish
Title of host publication2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages375-378
Number of pages4
ISBN (Electronic)978-1-4799-4242-8
DOIs
Publication statusPublished - 25 Feb 2015
Event2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014 - Marseille, France
Duration: 7 Dec 201410 Dec 2014

Conference

Conference2014 21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014
CountryFrance
CityMarseille
Period7/12/1410/12/14

Keywords

  • lossless bottom-plate sampling
  • Mismatch-Insensitive
  • Pipeline ADCs
  • Unity feedback-factor

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