A New Solution to Analysis of CMOS Ring Oscillators
New equations are proposed for frequency and amplitude of a ring oscillator. The method is general enough to be used for all types of delay stages. Using exact largesignal circuit analysis, closed form equations for estimating the frequency and amplitude of a high frequency ring oscillator are deriv...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Iran University of Science and Technology
2009-03-01
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| Series: | Iranian Journal of Electrical and Electronic Engineering |
| Subjects: | |
| Online Access: | http://ijeee.iust.ac.ir/browse.php?a_code=A-10-3-78&slc_lang=en&sid=1 |
| _version_ | 1818067797717024768 |
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| author | P. M. Farahabadi H. Miar-Naimi A. Ebrahimzadeh |
| author_facet | P. M. Farahabadi H. Miar-Naimi A. Ebrahimzadeh |
| author_sort | P. M. Farahabadi |
| collection | DOAJ |
| description | New equations are proposed for frequency and amplitude of a ring oscillator.
The method is general enough to be used for all types of delay stages. Using exact largesignal
circuit analysis, closed form equations for estimating the frequency and amplitude of
a high frequency ring oscillator are derived as an example. The method takes into account
the effect of various parasitic capacitors to have better accuracy. Based on the loop gain of
the ring, the transistors may only be in saturation or experience cutoff and triode regions.
The analysis considers all of the above mentioned scenarios respectively and gives distinct
equations. The validity of the resulted equations is verified through simulations using
TSMC 0.18 µm CMOS process. Simulation results show the better accuracy of the
proposed method compared with others. |
| first_indexed | 2024-12-10T15:29:24Z |
| format | Article |
| id | doaj.art-e9d52d9226094e4f8b409edb701743cf |
| institution | Directory Open Access Journal |
| issn | 1735-2827 2383-3890 |
| language | English |
| last_indexed | 2024-12-10T15:29:24Z |
| publishDate | 2009-03-01 |
| publisher | Iran University of Science and Technology |
| record_format | Article |
| series | Iranian Journal of Electrical and Electronic Engineering |
| spelling | doaj.art-e9d52d9226094e4f8b409edb701743cf2022-12-22T01:43:26ZengIran University of Science and TechnologyIranian Journal of Electrical and Electronic Engineering1735-28272383-38902009-03-01513241A New Solution to Analysis of CMOS Ring OscillatorsP. M. Farahabadi0H. Miar-Naimi1A. Ebrahimzadeh2 New equations are proposed for frequency and amplitude of a ring oscillator. The method is general enough to be used for all types of delay stages. Using exact largesignal circuit analysis, closed form equations for estimating the frequency and amplitude of a high frequency ring oscillator are derived as an example. The method takes into account the effect of various parasitic capacitors to have better accuracy. Based on the loop gain of the ring, the transistors may only be in saturation or experience cutoff and triode regions. The analysis considers all of the above mentioned scenarios respectively and gives distinct equations. The validity of the resulted equations is verified through simulations using TSMC 0.18 µm CMOS process. Simulation results show the better accuracy of the proposed method compared with others.http://ijeee.iust.ac.ir/browse.php?a_code=A-10-3-78&slc_lang=en&sid=1CMOS voltage-controlled oscillators high-speed integrated circuitstrigonometric equations large-signal analysis. |
| spellingShingle | P. M. Farahabadi H. Miar-Naimi A. Ebrahimzadeh A New Solution to Analysis of CMOS Ring Oscillators Iranian Journal of Electrical and Electronic Engineering CMOS voltage-controlled oscillators high-speed integrated circuits trigonometric equations large-signal analysis. |
| title | A New Solution to Analysis of CMOS Ring Oscillators |
| title_full | A New Solution to Analysis of CMOS Ring Oscillators |
| title_fullStr | A New Solution to Analysis of CMOS Ring Oscillators |
| title_full_unstemmed | A New Solution to Analysis of CMOS Ring Oscillators |
| title_short | A New Solution to Analysis of CMOS Ring Oscillators |
| title_sort | new solution to analysis of cmos ring oscillators |
| topic | CMOS voltage-controlled oscillators high-speed integrated circuits trigonometric equations large-signal analysis. |
| url | http://ijeee.iust.ac.ir/browse.php?a_code=A-10-3-78&slc_lang=en&sid=1 |
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