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Title:Temperature compensation in CMOS ring oscillators
Author(s):Wasowicz, Alec
Contributor(s):Hanumolu, Pavan K.
Subject(s):Ring Oscillator
Temperature
Feedback
Compensation
Abstract:Increasing the utility of integrated ring oscillators requires that several sources of error be addressed. These include temperature, voltage, and process variations. A solution to these would allow for higher performance PLLs. This project addresses the temperature dependence of the frequency. Active elements dominate the temperature variation in the circuit. To compensate for this, a feedback loop was created to correct the control current of the oscillator across temperature. The feedback loop uses passive poles to introduce a delay into the signal path. The phase between this delayed path and the original signal depends on the frequency of the signal. This allows the oscillator to be tuned. This method was implemented in 65 nm CMOS for a 64 MHz ring oscillator.
Issue Date:2018-05
Genre:Other
Type:Text
Language:English
URI:http://hdl.handle.net/2142/100045
Date Available in IDEALS:2018-05-25


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