A 9.4 MHz, 0.011 mm², 107.6 ppm/°C single-port RC oscillator with temperature compensation

A 9.4 MHz single-port RC oscillator is introduced using 0.18 μm CMOS technology, which can be applied in cryogenic medical instruments. By combining a comparator with negative resistors and optimizing temperature coefficients of composite resistors, we are able to reduce the sensitivity of frequency...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1303; no. 1; pp. 12111 - 12116
Main Authors Ju, Chunge, Wei, Qi, Li, Xiang, Zhou, Bin
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2019
Subjects
CMOS
Frequency stability
Frequency variation
Medical instruments
Physics
Resistors
Temperature compensation
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Summary:A 9.4 MHz single-port RC oscillator is introduced using 0.18 μm CMOS technology, which can be applied in cryogenic medical instruments. By combining a comparator with negative resistors and optimizing temperature coefficients of composite resistors, we are able to reduce the sensitivity of frequency to temperature. The proposed oscillator improves the stability of the frequency without significant increase in area, occupying only 0.011 mm². The measured frequency variation is less than ±0.5% from -65°C to 25°C and ±0.35% from 3.8V to 4.2V.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1303/1/012111