Title :
A Contribution to the Discrete Z-Domain Analysis of ADPLL
Author :
Chen, Xin ; Yang, Jun ; Deng, Xiao-ying
Author_Institution :
Southeast Univ., Nanjing
Abstract :
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.
Keywords :
digital phase locked loops; ADPLL; all-digital phase-locked loop; digital controlled oscillator; discrete z-domain analysis; phase margin; Bandwidth; Clocks; Digital control; Digital filters; Frequency conversion; Phase detection; Phase locked loops; Proportional control; Quantization; Transfer functions;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415598
