A full-swing CMOS current steering DAC with an adaptive cell and a quaternary driver

Yanghyeok Choi, Seonghyun Park, Jieun Yoo, Seol Namgung, Minkyu Song

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

Abstract

This paper describes a CMOS current steering digital-to-analog converter (DAC) with a full-swing output signal. Generally, a normal current steering DAC cannot have a full swing output signal, because conventional DACs have an inevitable voltage drop at the output current cell. In order to improve the drawbacks, we propose a new scheme of quaternary driver and an adaptive output current cell composed of both nMOS and pMOS. As well as the nMOS operates from the power supply to the half of the power supply, the pMOS operates independently from the half of the power supply to the ground voltage. Then, the final output voltage is obtained through a multiplexer that is driven by a quaternary driver which selects the optimized current cell. A 6-bit 1GS/s current steering DAC has been fabricated with Dongbu 0.11um 1-poly 6-metal CMOS technology to verify the performance of the proposed full-swing DAC. The effective chip area is 0.46mm2 and power consumption is about 19.1mW. The measured results reveal that the DAC has a full swing output signal.

Original languageEnglish
Title of host publicationProceedings - IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2015
PublisherIEEE Computer Society
Pages640-645
Number of pages6
ISBN (Electronic)9781479987184
DOIs
StatePublished - 27 Oct 2015
EventIEEE Computer Society Annual Symposium on VLSI, ISVLSI 2015 - Montpellier, France
Duration: 8 Jul 201510 Jul 2015

Publication series

NameProceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI
Volume07-10-July-2015
ISSN (Print)2159-3469
ISSN (Electronic)2159-3477

Conference

ConferenceIEEE Computer Society Annual Symposium on VLSI, ISVLSI 2015
Country/TerritoryFrance
CityMontpellier
Period8/07/1510/07/15

Keywords

  • Adaptive cell
  • Current steering DAC
  • Full-swing
  • Quaternary driver

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