A Colpitts-Based frequency reference achieving a single-trim ± 120ppm accuracy from -50 to 170°C

Alexander Sebastian Delke*, Anne J. Annema, Mark Stefan Oude Alink, Yanyu Jin, Jos Verlinden, Bram Nauta

*Corresponding author for this work

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

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Abstract

A single-trim, high accuracy frequency reference is presented. The Colpitts LC-oscillator topology reduces the temperature dependencies of the LC-tank quality factor on the oscillation frequency. With a fractional divider for frequency compensation it can serve as crystal-replacement. Measurements of the prototype (16 samples) in a 0.13μm high-voltage CMOS SOI process show ±120ppm accuracy from -50 to 170°C. The oscillator dissipates 3.5mW from a 2.5V supply and has 220ppm/V supply-sensitivity without supply regulation.
Original languageEnglish
Title of host publication2020 IEEE Custom Integrated Circuits Conference (CICC)
Place of PublicationBoston, MA, USA
PublisherIEEE
ISBN (Electronic)978-1-7281-6031-3
ISBN (Print)978-1-7281-6032-0
DOIs
Publication statusPublished - 23 Mar 2020
EventIEEE Custom Integrated Circuits Conference, CICC 2020 - Online conference
Duration: 22 Mar 202025 Mar 2020

Conference

ConferenceIEEE Custom Integrated Circuits Conference, CICC 2020
Abbreviated titleCICC 2020
Period22/03/2025/03/20

Keywords

  • Oscillators
  • Temperature measurement
  • Temperature sensors
  • Frequency measurement

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