A 14-nm Ultra-Low Jitter Fractional-N PLL Using a DTC Range Reduction Technique and a Reconfigurable Dual-Core VCO

W Wu, CW Yao, C Guo, PY Chiang… - IEEE Journal of Solid …, 2021‏ - ieeexplore.ieee.org
This work presents a 6-GHz low-jitter and high figure-of-merit (FoM) fractional-phase-locked
loop (PLL). It uses a digital-to-time converter (DTC)-based sampling PLL architecture. To …

A Low-Spur and Low-Jitter Fractional-N Digital PLL Based on an Inverse-Constant-Slope DTC and FCW Subtractive Dithering

SM Dartizio, F Tesolin, G Castoro… - IEEE Journal of Solid …, 2023‏ - ieeexplore.ieee.org
This work presents a low-spur and low-jitter fractional-digital phase-locked loop (PLL). To
reduce the fractional spurs caused by the non-linearity of the digital-to-time converter (DTC) …

Linearized Analysis and Quantization Error Minimization for Mid-Rise TDCs: A Tutorial

X Wang, MP Kennedy - … Transactions on Circuits and Systems I …, 2025‏ - ieeexplore.ieee.org
The mid-rise time-to-digital converter (TDC), eg, a binary (bang-bang) phase detector and
other few-bit TDCs, is commonly used as the phase detector (PD) in a digital phase locked …

A 265- W Fractional- Digital PLL With Seamless Automatic Switching Sub-Sampling/Sampling Feedback Path and Duty-Cycled Frequency-Locked Loop in 65 …

H Liu, Z Sun, H Huang, W Deng… - IEEE Journal of Solid …, 2019‏ - ieeexplore.ieee.org
This article proposes a fractional-N digital phase-locked loop (DPLL) that achieves a 265-
μW ultra-lowpower operation. The proposed switching feedback can seamlessly change the …

[HTML][HTML] Ring-VCO-based phase-locked loops for clock generation–design considerations and state-of-the-art

S Yang, J Yin, Y Liu, Z Zhu, R Bao, J Lin, H Li, Q Li… - Chip, 2023‏ - Elsevier
This article overviews the design considerations and state-of-the-art of the ring voltage-
controlled oscillator (VCO)-based phase-locked loops (PLLs) for clock generation in different …

A Fully Synthesizable Fractional-N MDLL With Zero-Order Interpolation-Based DTC Nonlinearity Calibration and Two-Step Hybrid Phase Offset Calibration

B Liu, Y Zhang, J Qiu, HC Ngo, W Deng… - … on Circuits and …, 2020‏ - ieeexplore.ieee.org
In this paper, a fully-synthesizable digital-to-time (DTC)-based fractional-Nmultiplying delay-
locked loop (MDLL) is presented. Noise and linearity of synthesizable DTCs are analyzed …

A Fractional- Sampling PLL With a Merged Constant-Slope DTC and Sampling PD

G **, F Feng, W Chen, Y Shu, X Luo… - IEEE Journal of Solid …, 2024‏ - ieeexplore.ieee.org
This article presents a 3.3–4.5-GHz fractional-analog sampling phase-locked loop (SPLL). A
merged constant-slope digital-to-time converter and sampling phase detector (CSDTC-SPD) …

A charge-sharing locking technique with a general phase noise theory of injection locking

Y Hu, X Chen, T Siriburanon, J Du… - IEEE Journal of Solid …, 2021‏ - ieeexplore.ieee.org
This article presents a millimeter-wave (mmW) frequency synthesizer based on a new
charge-sharing locking (CSL) technique. A charge-preset capacitor is introduced for charge …

A sub-mW 2.4-GHz active-mixer-adopted sub-sampling PLL achieving an FoM of− 256 dB

DG Lee, PP Mercier - IEEE Journal of Solid-State Circuits, 2019‏ - ieeexplore.ieee.org
An active-mixer-adopted sub-sampling phase-locked loop (AMASS-PLL) is presented that
replaces the passive-mixer-like sample-and-hold switches and charge pump (CP) of a sub …

A 32-kHz-Reference 2.4-GHz Fractional-N Oversampling PLL With 200-kHz Loop Bandwidth

J Qiu, Z Sun, B Liu, W Wang, D Xu… - IEEE Journal of Solid …, 2021‏ - ieeexplore.ieee.org
In this article, a mixed–signal, 32-kHz reference-based 2.4-GHz fractional-over-sampling
phase-locked loop (OSPLL) is proposed. Different from the conventional sampling PLL …