A CMOS Dual-RC frequency reference with ±250ppm inaccuracy from -45°C to 85°C

Çağri Gürleyük, Lorenzo Pedalà, Fabio Sebastiano, Kofi A.A. Makinwa

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

5 Citations (Scopus)
36 Downloads (Pure)

Abstract

To comply with wired communication standards such as USB, SATA and PCI/PCI-E, systems-on-chip require frequency references with better than 300ppm accuracy. LC-based references achieve 100ppm accuracy [1], but suffer from high power consumption (∼20mW). Thermal diffusivity (TD) references require less power (∼2mW), at the expense of less accuracy (1000ppm) [2]. RC-based references offer the lowest power consumption, but their accuracy is typically limited to ∼0.1% [3]. In RC relaxation oscillators, comparator offset and delay are the major sources of inaccuracy [4,5]. References based on frequency-locked loops (FLLs) circumvent these by locking an oscillator's frequency to the time-constant of an RC filter, but their accuracy is then limited by the nonlinear temperature dependency of on-chip resistors [3,6].

Original languageEnglish
Title of host publication2018 IEEE International Solid-State Circuits Conference, ISSCC 2018
Subtitle of host publicationDigest of technical papers
EditorsL.J. Fujino
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages54-56
Number of pages3
Volume61
ISBN (Electronic)978-1-5090-4940-0
ISBN (Print)978-1-5386-2227-8
DOIs
Publication statusPublished - 2018
Event65th IEEE International Solid-State Circuits Conference, ISSCC 2018 - San Francisco, United States
Duration: 11 Feb 201815 Feb 2018

Conference

Conference65th IEEE International Solid-State Circuits Conference, ISSCC 2018
Country/TerritoryUnited States
CitySan Francisco
Period11/02/1815/02/18

Bibliographical note

Session 3.3
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Frequency locked loops
  • Oscillators
  • Temperature measurement
  • Jitter
  • Resistors
  • Circuit stability
  • Thermal stability

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