A 28-nm 75-fsrms Analog Fractional- Sampling PLL With a Highly Linear DTC Incorporating Background DTC Gain Calibration and Reference Clock Duty Cycle …

W Wu, CW Yao, K Godbole, R Ni… - IEEE Journal of Solid …, 2019 - ieeexplore.ieee.org
An analog fractional-sampling phase-locked loop (PLL) is presented. It achieves 75-fs rms
jitter, integrated from 10 kHz to 10 MHz, and a− 249.7-dB figure of merit (FoM) at the …

A Fractional-N Sub-Sampling PLL using a Pipelined Phase-Interpolator With an FoM of -250 dB

AT Narayanan, M Katsuragi, K Kimura… - IEEE Journal of Solid …, 2016 - ieeexplore.ieee.org
A fractional-N sub-sampling PLL architecture based on pipelined phase-interpolator and
Digital-to-Time-Converter (DTC) is presented in this paper. The combination of pipelined …

Benchmark figure of merit extensions for low jitter phase locked loops inspired by new PLL architectures

W Bae - IEEE Access, 2022 - ieeexplore.ieee.org
A conventional figure-of-merit (FOM) for a phase-locked loop (PLL) has served as the most
powerful indicator to compare and to normalize performance of different PLL designs …

A 3.5–6.8-GHz Wide-Bandwidth DTC-Assisted Fractional-N All-Digital PLL With a MASH -TDC for Low In-Band Phase Noise

Y Wu, M Shahmohammadi, Y Chen… - IEEE Journal of Solid …, 2017 - ieeexplore.ieee.org
This paper proposes a digital-to-time converter (DTC)-assisted fractional-N wide-bandwidth
all-digital phaselocked loop (ADPLL) with a fine-resolution time-to-digital converter (TDC) …

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 DTC-based subsampling PLL capable of self-calibrated fractional synthesis and two-point modulation

N Markulic, K Raczkowski, E Martens… - IEEE Journal of Solid …, 2016 - ieeexplore.ieee.org
We present an analog subsampling PLL based on a digital-to-time converter (DTC), which
operates with almost no performance gap (176/198 fs RMS jitter) between the integer and …

Design and analysis of low-power high-frequency robust sub-harmonic injection-locked clock multipliers

A Elkholy, M Talegaonkar, T Anand… - IEEE Journal of Solid …, 2015 - ieeexplore.ieee.org
A low-jitter, low-power LC-based injection-locked clock multiplier (ILCM) with a digital
frequency-tracking loop (FTL) is presented. Based on a pulse gating technique, the …

A 10-bit, 550-fs step Digital-to-Time Converter in 28nm CMOS

N Markulic, K Raczkowski, P Wambacq… - ESSCIRC 2014-40th …, 2014 - ieeexplore.ieee.org
This paper presents a 10-bit, 550-fs step Digital-to-Time Converter (DTC) used in the phase
comparison path of a fractional-N, TDC-less and divider-less PLL. The DTC is devised as a …

An ultra-low power 1.7-2.7 GHz fractional-N sub-sampling digital frequency synthesizer and modulator for IoT applications in 40 nm CMOS

YH Liu, J Van Den Heuvel, T Kuramochi… - … on Circuits and …, 2016 - ieeexplore.ieee.org
This paper introduces an ultra-low power 1.7-2.7-GHz fractional-N sub-sampling digital PLL
(SS-DPLL) for Internet-of-Things (IoT) applications targeting compliance with Bluetooth Low …

A 1.7 GHz fractional-N frequency synthesizer based on a multiplying delay-locked loop

S Levantino, G Marucci, G Marzin… - IEEE Journal of Solid …, 2015 - ieeexplore.ieee.org
Although multiplying delay-locked loops allow clock frequency multiplication with very low
phase noise and jitter, their application has been so far limited to integer-N multiplication …