Title

2020.10

Journal

Clocking

Jihwan Seol, Kyojin Choo, David Blaauw, Dennis Sylvester, Taekwang Jang

A 67fs,rms Jitter, −130dBc/Hz In-Band Phase Noise, −256dB FoM Reference Oversampling Digital PLL with Proportional Path Timing Control

IEEE Solid-State Circuits Letter (SSCS)

2019.11

Journal

Energy, Low-power analog

Yimai Peng, Kyojin Choo, Sechang Oh, Inhee Lee, Taekwang Jang, Yejoong Kim, Jongyup Lim, Dennis Sylvester, David Blaauw

An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Sense-and-Set Rectifier

(invited) IEEE Journal of Solid-State Circuits (JSSC)

2019.11

Journal

Charge-domain, Low-power analog, Sensor

Kyojin Choo, Li Xu, Yejoong Kim, Ji-Hwan Seol, Xiao Wu, Dennis Sylvester, David Blaauw

Energy-Efficient Motion-Triggered IoT CMOS Image Sensor with Capacitor Array-Assisted Charge-Injection SAR ADC

(invited) IEEE Journal of Solid-State Circuits (JSSC)

2018.11

Journal

Charge-domain, Low-power analog, Sensor

Taekwang Jang, Jongyup Lim, Kyojin Choo, Samuel Nelson, Jeongsup Lee, Sechang Oh, Synthia Chestek, Dennis Sylvester, David Blaauw

A Noise-Efficient Neural Recording Amplifier Using Discrete-Time Parametric Amplification

IEEE Solid-State Circuits Letter (SSCS)

2018.07

Journal

High-speed, Communication

Shiming Song, Kyojin David Choo, Thomas Chen, Sunmin Jang, Michael P. Flynn, Zhengya Zhang

A Maximum-Likelihood Sequence Detection Powered ADC-Based Serial Link

IEEE Transaction on Circuits and Systems I (TCAS-I)

2018.01

Journal

Clocking

Taekwang Jang, Seokhyeon Jeong, Dongsuk Jeon, Kyojin David Choo, Dennis Sylvester, David Blaauw

A Noise Reconfigurable All-Digital Phase-Locked Loop Using a Switched Capacitor-Based Frequency-Locked Loop and a Noise Detector

(Invited) IEEE Journal of Solid-State Circuits (JSSC)

2018

Book

Charge-domain

Michael P. Flynn, Kyojin Choo, and Yong Lim

Ch. 16 Pipeline and SAR ADCs for Advanced Nodes

AACD book: Hybrid ADCs, Smart Sensors for the IoT, and Sub-1V & Advanced Node Analog Circuit Design, Cham, Springer International Publishing AG, Switzerland

2017.12

Journal

Charge-domain, Energy, Low-power analog

Xiao Wu, Kyojin Choo, Yao Shi, Li-Xuan Chuo, Dennis Sylvester, David Blaauw

A Fully Integrated Counter Flow Energy Reservoir for Peak Power Delivery in Small Form-Factor Sensor Systems

(Invited) IEEE Journal of Solid-State Circuits (JSSC)

2017.09

Workshop

Charge-domain

Michael P. Flynn, Kyojin Choo, and Yong Lim

Pipeline and SAR ADCs for Advanced Nodes

Workshop on Advances in Analog Circuit Design (AACD)

2015.06

Workshop

Sensor

Sungsoo Choi, S. H. Lim, Moosup Kim, H. J. Bae, K. J. Choo et al.

Back-side illuminated 28M-pixel APS-C sensor with high performance

International Image Sensor Workshop

2009.02

Journal

Clocking

D. H. Oh, K. J. Choo, and D. K. Jeong

Phase-frequency detecting time-to-digital converter

IEE Electronics Letter