A 4–20-Gb/s 1.87-pJ/b continuous-rate digital CDR circuit with unlimited frequency acquisition capability in 65-nm CMOS

K Park, K Lee, SY Cho, J Lee, J Hwang… - IEEE Journal of Solid …, 2020 - ieeexplore.ieee.org
A continuous-rate referenceless clock and data recovery (CDR) circuit with an unlimited
frequency acquisition capability is presented. The proposed frequency detector (FD) is …

A 6.5–12.5-Gb/s half-rate single-loop all-digital referenceless CDR in 28-nm CMOS

C Yu, E Sa, S Jin, H Park, J Shin… - IEEE Journal of Solid …, 2020 - ieeexplore.ieee.org
This article presents a novel method for frequency tracking based on an extended bang-
bang phase detector (XBBPD) in a referenceless clock and data recovery (CDR) circuit. The …

6.5 A 6.4-to-32Gb/s 0.96 pJ/b referenceless CDR employing ML-inspired stochastic phase-frequency detection technique in 40nm CMOS

K Park, M Shim, HG Ko… - 2020 IEEE International …, 2020 - ieeexplore.ieee.org
Continuous-rate referenceless clock and data recovery (CDR) circuits are capable of
operating over a wide range of data rates in multiple standards. To achieve wide-range …

A sub-0.25-pJ/bit 47.6-to-58.8-Gb/s reference-less FD-less single-loop PAM-4 bang-bang CDR with a deliberate-current-mismatch frequency acquisition technique in …

X Zhao, Y Chen, L Wang, PI Mak… - IEEE Journal of Solid …, 2022 - ieeexplore.ieee.org
This article reports a half-rate single-loop bang-bang clock and data recovery (BBCDR)
circuit without the need of reference and frequency detector (FD). Specifically, we propose a …

A 0.0285-mm2 0.68-pJ/bit Single-Loop Full-Rate Bang-Bang CDR Without Reference and Separate FD Pulling Off an 8.2-Gb/s/μs Acquisition Speed of the PAM-4 …

X Zhao, Y Chen, PI Mak… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
This article reports a single-loop full-rate bang-bang clock and data recovery (BBCDR)
circuit supporting a four-level pulse amplitude modulation (PAM-4) pattern. We eliminate …

Design techniques for a 6.4–32-Gb/s 0.96-pJ/b continuous-rate CDR with stochastic frequency–phase detector

K Park, M Shim, HG Ko, B Nikolić… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
This article presents design techniques for a continuous-rate reference-free clock and data
recovery (CDR) circuit employing a stochastic frequency–phase detector (SFPD). By taking …

A 10.8-to-37.4 Gb/s reference-less FD-less single-loop quarter-rate bang-bang clock and data recovery employing deliberate-current-mismatch wide-frequency …

L Wang, Y Chen, C Yang, X Zhao… - … on Circuits and …, 2023 - ieeexplore.ieee.org
This paper reports a reference-less frequency-detector-less single-loop bang-bang clock
and data recovery (BBCDR) circuit featuring wide frequency acquisition. We use a current …

A 0.32–2.7 Gb/s reference-less continuous-rate clock and data recovery circuit with unrestricted and fast frequency acquisition

NH Tho, HJ Lee, TJ An, JK Kang - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This brief presents a design of fast frequency locking 320 Mb/s to 2.7 Gb/s continuous-rate
reference-less clock and data recovery (CDR) circuit. A simultaneous coarse/fine frequency …

A 6.4–11 Gb/s wide-range referenceless single-loop CDR with adaptive JTOL

HR Kim, JY Lee, JS Lee, DS Kang… - IEEE Solid-State …, 2020 - ieeexplore.ieee.org
A referenceless single-loop clock and data recovery (CDR) with a 6.4-11-Gb/s capture range
is presented. A dynamic bandwidth control (DBWC) technique for reducing the frequency …

A 6–64-Gb/s 0.41-pJ/bit Reference-Less PAM4 CDR Using a Frequency-Detection-Gain-Enhanced PFD Achieving 19.8-Gb/s/μs Acquisition Speed

L Feng, T Li, X Zou, X Xiong… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
This brief presents a wideband continuous-rate reference-less ring-oscillator-based PAM4
CDR. Our proposed frequency-detection-gain-enhanced phase/frequency detector (GE …