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  4. Extended event-driven modeling of a SD-fractional-N PLL including non-ideal effects
 
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2014
Conference Paper
Title

Extended event-driven modeling of a SD-fractional-N PLL including non-ideal effects

Abstract
In modern systems PLLs are widely used e.g. for frequency synthesis. Since this feedback control system exhibits a mixed-signal nature, it is challenging to use general theory to characterize its dynamic behavior. Additionally, due to the low and high frequency parts, simulations utilizing either a behavioral or transistor-level model are not computer resource efficient. To overcome this the modular and enhanced Event-Driven Model can be used. Since the existing Event-Driven Model is neither applicable to take different divider delays into account nor to consider a SD-Modulator, this work focuses on the extension of this modeling approach considering a SD-Fractional-N PLL with non-ideal effects like dead zone, leakage current and different divider delays. This extended model is validated with transistor-level simulations and is used to explore the impact of non-ideal effects on the loop characteristics.
Author(s)
Hangmann, C.
Hedayat, Christian  
Hilleringmann, Ulrich
Mainwork
21st IEEE International Conference on Electronics, Circuits and Systems, ICECS 2014  
Conference
International Conference on Electronics, Circuits and Systems (ICECS) 2014  
DOI
10.1109/ICECS.2014.7049931
Language
English
Fraunhofer-Institut für Elektronische Nanosysteme ENAS  
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