A 4-12.1-GHz Fractional-N Ring Sampling PLL Based on Adaptively-Biased PD-Merged DTC Achieving -37.6± 0.9-dBc Integrated Phase Noise, 261.9-fs RMS Jitter, and -240.6-dB FoM

Author:

Shen Xinyu1,Zhang Zhao1,Li Guike1,Chen Yong2,Qi Nan1,Liu Jian1,Wu Nanjian1,Liu Liyuan1

Affiliation:

1. Institute of Semiconductors, Chinese Academy of Sciences,State Key Laboratory of Superlattices and Microstructures,Beijing,China

2. University of Macau,Macau,China

Funder

National Natural Science Foundation of China

Publisher

IEEE

Reference9 articles.

1. A 3.3-4.5GHz Fractional-N Sampling PLL with A Merged Constant Slope DTC and Sampling PD in 40nm CMOS

2. A 2.4-GHz RF Fractional- ${N}$ Synthesizer With BW $= 0.25f_{\mathrm{ REF}}$

3. A 0.9–2.25-GHz Sub-0.2-mW/GHz Compact Low-Voltage Low-Power Hybrid Digital PLL With Loop Bandwidth-Tracking Technique

4. A-58 dBc-Worst-Fractional-Spur and -234 dBFoMjitter, 5.5GHz Ring-DCO-Based Fractional-N DPLL Using a Time-Invariant-Probability Modulator, Generating a NonlinearityRobust DTC-Control Word;seong;IEEE Int Solid-State Circuits Conf (ISSCC) Dig Tech Papers,2020

5. A 4GHz 0.73ps _rms -Integrated-Jitter PVT-Insensitive Fractional-N Sub-Sampling Ring PLL with a Jitter-Tracking DLLAssisted DTC;jung;Proc Symp VLSI Circuits,2020

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