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A study of phase noise in CMOS oscillators
Abstract
This paper presents a study of phase noise in two inductorless CMOS oscillators. First-order analysis of a linear oscillatory system leads to a noise shaping function and a new definition of Q. A linear model of CMOS ring oscillators is used to calculate their phase noise, and three phase noise phenomena, namely, additive noise, high-frequency multiplicative noise, and low-frequency multiplicative noise, are identified and formulated. Based on the same concepts, a CMOS relaxation oscillator is also analyzed. Issues and techniques related to simulation of noise in the time domain are described, and two prototypes fabricated in a 0.5-/spl mu/m CMOS technology are used to investigate the accuracy of the theoretical predictions. Compared with the measured results, the calculated phase noise values of a 2-GHz ring oscillator and a 900-MHz relaxation oscillator at 5 MHz offset have an error of approximately 4 dB.
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Cites
Noise in relaxation oscillators
Abidi, A. A., & Meyer, R. G. (1983) · IEEE Journal of Solid-State Circuits · doi:10.1109/jssc.1983.1052034 · Cited by 228
Cited by
Jitter and phase noise in ring oscillators
Hajimiri, A., Limotyrakis, S., & Lee, T. H. (1999) · IEEE Journal of Solid-State Circuits · doi:10.1109/4.766813 · Cited by 1,071
Oscillator phase noise: a tutorial
Lee, T. H., & Hajimiri, A. (2000) · IEEE Journal of Solid-State Circuits · doi:10.1109/4.826814 · Cited by 916
A study of oscillator jitter due to supply and substrate noise
Herzel, F., & Razavi, B. (1999) · IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing · doi:10.1109/82.749085 · Cited by 316
Self-citationDemir, A. (2006) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2006.881184 · Cited by 184
Modeling CMOS Ring Oscillator Performance<newline/> as a Randomness Source
Guler, U., & Dundar, G. (2014) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2013.2283993 · Cited by 25
Metadata
- Authors
- Razavi, B.
- Venue
- IEEE Journal of Solid-State Circuits
- Published
- 1996-03
- Volume
- 31
- Issue
- 3
- Pages
- 331-343
- ISSN
- 0018-9200 (ISSN-L)
- OpenAlex
- W2062327827
- Cited by
- 1,021
- References
- 1
- FWCI
- 19.90
- Type
- journal article
- Language
- en
- Open access
- closed
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- Razavi, B. (1996). A study of phase noise in CMOS oscillators. IEEE Journal of Solid-State Circuits. https://doi.org/10.1109/4.494195
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