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A 1.5 +/- 0.39 ppm/degrees C Temperature-Compensated LC Oscillator Using Constant-Biased Varactors

Title
A 1.5 +/- 0.39 ppm/degrees C Temperature-Compensated LC Oscillator Using Constant-Biased Varactors
Author(s)
Wang, YongChai, Kevin T. C.Mu, XiaojingJe, MinkyuGoh, Wang Ling
DGIST Authors
Je, Minkyu
Issued Date
2015-02
Type
Article
Article Type
Article
Subject
ClocksCmos Integrated CircuitsFrequency ReferenceFrequency SourceOscillator FrequencyPhase-Locked LoopPhase Locked LoopsPhase NoiseTemperatureTemperature CoefficientTemperature CompensatedTemperature CompensationTemperature DriftsTemperature SensorTemperature SensorsVaractorsWide Temperature Ranges
ISSN
1531-1309
Abstract
This letter presents a temperature compensated oscillator for clock generation across a wide temperature range. The proposed technique deploys the characteristics of the constant-biased varactors to nullify the overall oscillator's temperature coefficient (TC), thereby reducing the temperature drift effect on the oscillator frequency output. Fabricated on a 0.18 μ m CMOS technology, the proposed 2.09 GHz-gm-LC oscillator sees a mere 1.5 ppm ° C frequency drift from-20 ° C to 120° C. The oscillator consumes 10.9 mW at 1.4 V supply, with phase noise of-119.4 dBc/Hz at a 1 MHz offset. The demonstrated technique is useful for providing accurate clock for a variety of applications, including those operating in harsh environment. © 2001-2012 IEEE.
URI
http://hdl.handle.net/20.500.11750/2610
DOI
10.1109/LMWC.2014.2382678
Publisher
Institute of Electrical and Electronics Engineers Inc.
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Department of Electrical Engineering and Computer Science IMPACT Lab 1. Journal Articles

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