An Automatic Offset Compensation Sense Amplifier Featuring High Readout Reliability for SRAM

  • Shurun Li*
  • , Jie Liang
  • , Liuyang Zhang
  • *Corresponding author for this work

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

Abstract

With technology nodes aggressive scaling down, offset voltage has been emerging as one of the critical readout reliability issues of SRAM. This paper proposes a method named automatic compensation sense amplifier (ACSA), to tackle it by identifying the direction of offset and compensating automatically. This method obtains and stores the offset direction through one-time sensing, and then auxiliary transistors in corresponding branches are turned on for current compensation. The circuit implementation of the method is evaluated with SMIC 55-nm technology, operated at a supply voltage of 1.2 V. The proposed ACSA achieves a 66.19% reduction in voltage offset compared to conventional Current Launch SA (CLSA), and a 30.6% reduction compared to conventional Voltage Launch SA (VLSA).

Original languageEnglish
Title of host publicationProceedings - International SoC Design Conference 2023, ISOCC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages23-24
Number of pages2
ISBN (Electronic)9798350327038
DOIs
StatePublished - 2023
Externally publishedYes
Event20th International SoC Design Conference, ISOCC 2023 - Jeju, Korea, Republic of
Duration: 25 Oct 202328 Oct 2023

Publication series

NameProceedings - International SoC Design Conference 2023, ISOCC 2023

Conference

Conference20th International SoC Design Conference, ISOCC 2023
Country/TerritoryKorea, Republic of
CityJeju
Period25/10/2328/10/23

Keywords

  • SRAM
  • offset cancellation
  • readout reliability
  • sense amplifier

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