64-bit low threshold voltage high-speed conditional carry adder by complementary pass-transistor logic

Kuo Hsing Cheng, Shun Wen Cheng, Che Yu Liao

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

2 Scopus citations

Abstract

A 64-bit low threshold voltage conditional carry adder using complementary pass-transistor logic for low-voltage and high-speed applications was presented. The improved conditional sum addition rule can reduce the number of internal nodes and multiplexers in the adder design. And reducing the threshold voltage increases the speed of operation. Thus, a low threshold voltage design is favorable for implementing low-voltage, high-speed arithmetic systems. The performances of such circuit are compared with that of normal and zero threshold voltage schemes; the proposed circuit gets the lowest power-delay product and energy-delay product from 1.0V to 2.5V. The circuit is demonstrated to balance between power consumption and performance effectively.

Original languageEnglish
Title of host publicationProceedings - IEEE Computer Society Annual Symposium on VLSI
Subtitle of host publicationEmerging Trends in VLSI Systems Design
EditorsA. Smailagic, M. Bayoumi
Pages233-236
Number of pages4
StatePublished - 2004
EventProceedings - IEEE Computer Society Annual Symposium on VLSI: Emerging Trends in VLSI Systems Design - Lafayette, LA, United States
Duration: 19 Feb 200420 Feb 2004

Publication series

NameProceedings - IEEE Computer Society Annual Symposium on VLSI: Emerging Trends in VLSI Systems Design

Conference

ConferenceProceedings - IEEE Computer Society Annual Symposium on VLSI: Emerging Trends in VLSI Systems Design
Country/TerritoryUnited States
CityLafayette, LA
Period19/02/0420/02/04

Keywords

  • Conditional sum adder
  • CPL
  • Differential-end
  • Low-threshold voltage
  • Low-voltage
  • VLSI design

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