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Research of segmented 8bit voltage-mode R-2R ladder DAC

  • East China Normal University
  • Shanghai Key Laboratory of Multidimensional Information Processing

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

Abstract

Modeling for voltage-mode R-2R ladder digital to analog converter (DAC) is introduced in this paper. By analyzing the mismatch of resistors in ladder, the DNL and INL calculation expression are obtained. In order to achieve a higher accuracy, segmentation is used in DAC. Five different segmentation methods are compared and 3+5 segmentation structure is chosen to achieve best DNL and INL performance. For post calibration, a code-dependent current consumption expression is derived from the input impedance of R-2R ladder. A 3+5 segmented DAC based on this modeling is implemented in a standard 0.18μm CMOS process. The post simulation results show that DNL and INL are bounded at 0.30 and 0.32LSB.

Original languageEnglish
Title of host publicationProceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015
EditorsJunyan Ren, Ting-Ao Tang, Fan Ye, Huihua Yu
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479984831
DOIs
StatePublished - 21 Jul 2016
Event11th IEEE International Conference on Advanced Semiconductor Integrated Circuits (ASIC), ASICON 2015 - Chengdu, China
Duration: 3 Nov 20156 Nov 2015

Publication series

NameProceedings - 2015 IEEE 11th International Conference on ASIC, ASICON 2015

Conference

Conference11th IEEE International Conference on Advanced Semiconductor Integrated Circuits (ASIC), ASICON 2015
Country/TerritoryChina
CityChengdu
Period3/11/156/11/15

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