An eCrystal oscillator with self-calibration capability

Chien Ying Yu*, Jui An Yu, Chen-Yi Lee

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

This paper reports an embedded crystal (eCrystal) oscillator which is capable of compensating process, voltage, and temperature (PVT) variation. The delay behaviors of two different delay cells are exploited for the delay estimation. Then the estimated delay is parameterized by a second order approximated function. According to the estimated delay, the eCrystal oscillator is able to calibrate the frequency error without any external reference. A 40MHz oscillator is implemented in a 90-nm CMOS technology with area of 0.4mm 2 by an all-digital approach. The fabricated chip is measured under supply voltage from 0.9V to 1.1V and temperature range from 0°C to 75°C with active power consumption of 237μW.

Original languageEnglish
Title of host publication2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Pages237-240
Number of pages4
DOIs
StatePublished - 26 Oct 2009
Event2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 - Taipei, Taiwan
Duration: 24 May 200927 May 2009

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

Conference2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
CountryTaiwan
CityTaipei
Period24/05/0927/05/09

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  • Cite this

    Yu, C. Y., Yu, J. A., & Lee, C-Y. (2009). An eCrystal oscillator with self-calibration capability. In 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 (pp. 237-240). [5117729] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2009.5117729