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Analysis of Pull-in Range Limit by Charge Pump Mismatch in a Linear Phase-Locked Loop.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Apr2013, Vol. 60 Issue 4, p896-907. 12p. - Publication Year :
- 2013
-
Abstract
- In this paper, we show the relationship between the pull-in range of a linear phase-locked loop (PLL) and the current mismatch of the charge pump that controls the frequency of the oscillator in the PLL. We evaluate the pull-in range of the PLL based on a nonlinear behavioral model of the pull-in process with three types of phase detectors. We introduce the mismatch error to the charge pump current in the PLL and study the impact of this error on the pull-in range. We also apply the mismatch error to a nonlinear differential equation that describes the loop dynamics of the PLL and calculate the pull-in range under this mismatch condition. We validate the limitations of the pull-in range due to the current mismatch by a numerical simulation with MATLAB. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 60
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 95452239
- Full Text :
- https://doi.org/10.1109/TCSI.2012.2215393