Dynamic calibration of feedback DAC non-linearity for a 4 th order CT sigma delta for digital hearing aids

Syed R. Naqvi, Ilker Deligoz, Sayfe Kiaei, Bertan Bakkaloglu

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

Abstract

In this paper we present a calibration scheme for calibrating the 2 nd order harmonic distortion of feedback DAC used in a 4 th order CT-Δ. This scheme was implemented in a 0.25um CMOS process with a supply voltage of 1.2V, the 4 th order CT-Δ was able to achieve 68dB measured SNR, while the 2 nd order harmonic was reduced by about 20dB suppressing it to the thermal noise floor.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE International SOC Conference, SOCC 2011
Pages109-113
Number of pages5
DOIs
StatePublished - Dec 28 2011
Event24th IEEE International System on Chip Conference, SOCC 2011 - Taipei, Taiwan, Province of China
Duration: Sep 26 2011Sep 28 2011

Publication series

NameInternational System on Chip Conference
ISSN (Print)2164-1676
ISSN (Electronic)2164-1706

Other

Other24th IEEE International System on Chip Conference, SOCC 2011
CountryTaiwan, Province of China
CityTaipei
Period9/26/119/28/11

ASJC Scopus subject areas

  • Hardware and Architecture
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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