A Contribution to the Discrete Z-Domain Analysis of ADPLL

In this paper, a new z-domain model for all-digital phase-locked loop (ADPLL) whose output frequency is inversely proportional to the control word of digital controlled oscillator (DCO) is proposed. With this new z-domain model, bandwidth and phase margin can still be acquired for these ADPLLs. Fina...

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Bibliographic Details
Published in2007 7th International Conference on ASIC pp. 185 - 188
Main Authors Xin Chen, Jun Yang, Xiao-ying Deng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2007
Subjects
Bandwidth
Clocks
Digital control
Digital filters
Frequency conversion
Phase detection
Phase locked loops
Proportional control
Quantization
Transfer functions
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Summary:In this paper, a new z-domain model for all-digital phase-locked loop (ADPLL) whose output frequency is inversely proportional to the control word of digital controlled oscillator (DCO) is proposed. With this new z-domain model, bandwidth and phase margin can still be acquired for these ADPLLs. Finally, a cycle-domain simulator is written to verify the correctness of z-domain model and the results are in good agreement within only 0.3-db measurement error bars.
ISBN:1424411319
9781424411313
ISSN:2162-7541
2162-755X
DOI:10.1109/ICASIC.2007.4415598