Fat tree encoder design for ultra-high speed flash A/D converters

Daegyu Lee, Jincheol Yoo, Kyusun Choi, Jahan Ghaznavi

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The thermometer code-to-binary code encoder has become the bottleneck of ultra-high speed flash ADCs. In this paper, the authors present the fat tree thermometer code-to-binary code encoder that is highly suitable for ultra-high speed flash ADCs. The simulation and the implementation results show that the fat tree encoder outperforms the commonly used ROM encoder in terms of speed and power for the 6 bit CMOS flash ADC case. The speed is improved by almost a factor of 2 when using the fat tree encoder, which in fact demonstrates the fat tree encoder is an effective solution for the bottleneck problem in ultra-high speed ADCs.

Original languageEnglish (US)
Pages (from-to)II87-II90
JournalMidwest Symposium on Circuits and Systems
Volume2
DOIs
StatePublished - Jan 1 2002

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Oils and fats
Fats
Binary codes
Thermometers
ROM

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Lee, Daegyu ; Yoo, Jincheol ; Choi, Kyusun ; Ghaznavi, Jahan. / Fat tree encoder design for ultra-high speed flash A/D converters. In: Midwest Symposium on Circuits and Systems. 2002 ; Vol. 2. pp. II87-II90.
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Fat tree encoder design for ultra-high speed flash A/D converters. / Lee, Daegyu; Yoo, Jincheol; Choi, Kyusun; Ghaznavi, Jahan.

In: Midwest Symposium on Circuits and Systems, Vol. 2, 01.01.2002, p. II87-II90.

Research output: Contribution to journalArticle

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