A 1.1-V 10-nm class 6.4-Gb/s/pin 16-Gb DDR5 SDRAM with a phase rotator-ILO DLL, high-speed SerDes, and DFE/FFE equalization scheme for Rx/Tx

D Kim, M Park, S Jang, JY Song, H Chi… - IEEE Journal of Solid …, 2019 - ieeexplore.ieee.org
A 1.1-V 6.4-Gb/s/pin 16-Gbit DDR5 is presented in 10-nm class CMOS technology. Various
functions and circuits' techniques are newly adopted to improve performance and power …

A multiphase DLL with a novel fast-locking fine-code time-to-digital converter

D Zhang, HG Yang, W Zhu, W Li… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
This brief presents a fast-locking multiphase closed-loop delay-locked loop (DLL). The
proposed DLL employs a novel rapid-tracking time-to-digital converter that spends only two …

22.6 a 0.8-to-2.3 GHz quadrature error corrector with correctable error range of 101.6 ps using minimum total delay tracking and asynchronous calibration on-off …

S Shin, HG Ko, S Jang, D Kim… - 2020 IEEE International …, 2020 - ieeexplore.ieee.org
As data transfer rates increase, clock frequencies used for high-speed data paths also
increase. Thus, multiphase clocks are typically utilized in DRAMs to relax timing margins …

All-digital fast-locking delay-locked loop using a cyclic-locking loop for DRAM

DH Jung, YJ An, K Ryu, JH Park… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
A fast-locking all-digital delay-locked loop (DLL) with closed-loop duty-cycle correction
(DCC) capability is proposed for clock synchronization in DRAM. A new cyclic-locking loop …

A DLL-based quadrature clock generator with a 3-stage quad delay unit using the sub-range phase interpolator for low-jitter and high-phase accuracy DRAM …

Y Yoon, H Park, C Kim - … on Circuits and Systems II: Express …, 2020 - ieeexplore.ieee.org
In an effort to keep pace with bandwidth growth, DRAM employes the quad data rate (QDR)
to transfer four data in one clock cycle. In recent graphic memories, QDR is being …

A wide-range, low-power, all-digital delay-locked loop with cyclic half-delay-line architecture

JS Wang, CY Cheng, PY Chou… - IEEE Journal of Solid …, 2015 - ieeexplore.ieee.org
A 3 MHz-to-1.8 GHz, 94 μW-to-9.5 mW, all-digital delay-locked loop (ADDLL) using 65-nm
CMOS technology is presented. In this paper, a cyclic half-delay-line architecture that uses …

Survey and analysis of delay-locked loops used in DRAM interfaces

HW Lee, C Kim - IEEE Transactions on Very Large Scale …, 2013 - ieeexplore.ieee.org
In this paper, delay-locked loops (DLLs) used in dynamic random access memory (DRAM)
are analyzed. DLLs can be categorized into digital-or analog-based topologies. This …

All-digital 90° phase-shift DLL with dithering jitter suppression scheme

DH Jung, K Ryu, JH Park… - IEEE Transactions on Very …, 2015 - ieeexplore.ieee.org
This paper proposes a 90° phase-shift delay-locked loop (DLL) used in dynamic RAM for
data sampling clock generation. The proposed DLL alleviates process variation issues …

A 2.4–8 GHz phase rotator delay-locked loop using cascading structure for direct input–output phase detection

H Park, J Sim, Y Choi, J Choi, Y Kwon… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This brief presents a phase rotator (PR)-based delay-locked loop (DLL) for a dynamic
random-access memory interface in 28-nm CMOS technology. A direct input–output …

A 3.2-12.8 Gb/s Duty-Cycle Compensating Quadrature Error Corrector for DRAM Interfaces, With Fast Locking and Low Power Characteristics

H Yoon, W Jung, J Park, J Byun, H Jin… - … 2021-IEEE 47th …, 2021 - ieeexplore.ieee.org
In this paper, a quadrature error corrector (QEC) for next generation DRAM interface is
proposed. The proposed QEC corrects duty-cycle error and 4-phase skew simultaneously …