Exploiting Stochastic Resonance to Enhance the Performance of Digital Bang-Bang PLLs

被引:25
作者
Marucci, Giovanni [1 ]
Levantino, Salvatore [1 ]
Maffezzoni, Paolo [1 ]
Samori, Carlo [1 ]
机构
[1] Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy
关键词
All-digital phase-locked loop (ADPLL); digital phase-locked loop; jitter; limit cycle; phase noise; spur; stochastic resonance (SR); PHASE-DETECTOR GAIN; NOISE;
D O I
10.1109/TCSII.2013.2273732
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, the multifaceted behavior of bang-bang digital phase-locked loops is explored. It is proved that a stochastic resonance phenomenon occurs at the balance between the quantization and intrinsic noise of the digitally controlled oscillator, which resides into the loop. How this condition maximizes the signal-to-noise performance is shown. The loop parameter value that yields stochastic resonance is provided in closed form.
引用
收藏
页码:632 / 636
页数:5
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