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Analysis and Design of a High-Frequency RC Oscillator Suitable for Mass Production
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Analys och konstruktion av en högfrekvent RC-svängningskrets lämplig för massproduktion (Swedish)
Abstract [en]

Oscillators are components providing clock signals. They are widely required by low-cost on-chip applications, such as biometric sensors and SoCs. As part of a sensor, a relaxation oscillator is implemented to provide a clock reference. Limited by the sensor application, a clock reference outside the sensor is not desired. An RC implementation of the oscillator has a balanced accuracy performance with low-cost advantage. Hence an RC relaxation oscillator is chosen to provide the clock inside the sensor.

This thesis proposes a current mode relaxation oscillator to achieve low frequency standard deviation across different supplies, temperatures and process corners. A comparison between a given relaxation oscillator and the proposed design is made as well. All oscillators in this thesis use 0.18 μm technology and 1.8 V nominal supply. The proposed oscillator manages to achieve a frequency standard deviation across all PVT variations less than ±6.5% at 78.4 MHz output frequency with a power dissipation of 461.2 μW. The layout of the oscillator's core area takes up 0.003 mm2.

Place, publisher, year, edition, pages
2017. , 80 p.
Keyword [en]
Relaxation Oscillator, Regulated Current Mirror, Current Mode Comparator
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-138423ISRN: LiTH-ISY-EX--17/5060--SEOAI: oai:DiVA.org:liu-138423DiVA: diva2:1110326
External cooperation
Fingerprint Cards AB
Subject / course
Integrated Circuits and Systems
Presentation
2017-06-09, Transformen, B-building, Linköping University, Linköping, 08:15 (English)
Supervisors
Examiners
Available from: 2017-06-15 Created: 2017-06-15 Last updated: 2017-06-15Bibliographically approved

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CiteExportLink to record
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  • apa
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