A 65μA 8MHz on-chip oscillator with LDO regulator for low-power handheld SoC applications

J. Day, P. Vulpoiu, D. K. Johnson, J. Julich, D. Y.C. Lie

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

1 Scopus citations

Abstract

This paper discusses an 8MHz square wave oscillator used for a clock signal of the digital core of a mixed signal integrated circuit (IC). The frequency is determined by a bias current that charges a capacitor until it triggers a comparator with a voltage reference as the second input. A low drop out (LDO) voltage regulator is used to supply the oscillator so that variations in the battery voltage do not affect the oscillator. The circuits have been designed and taped out and the measured results are closed to the SPICE simulated values. The oscillator has very low power consumption of 165 μW which is very attractive for a general handheld device that is operated off of a battery.

Original languageEnglish
Title of host publicationICSICT 2008 - 2008 9th International Conference on Solid-State and Integrated-Circuit Technology Proceedings
Pages2027-2030
Number of pages4
DOIs
StatePublished - 2008
Event2008 9th International Conference on Solid-State and Integrated-Circuit Technology, ICSICT 2008 - Beijing, China
Duration: Oct 20 2008Oct 23 2008

Publication series

NameInternational Conference on Solid-State and Integrated Circuits Technology Proceedings, ICSICT

Conference

Conference2008 9th International Conference on Solid-State and Integrated-Circuit Technology, ICSICT 2008
Country/TerritoryChina
CityBeijing
Period10/20/0810/23/08

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