Jeongjin Roh

56 papers A 2C 2Misc 2Journal 42Unranked 8
YearRankTypeTitle / Venue / Authors
2025 C conf
A 103.9-dB SNDR 5-kHz BW Continuous-Time Dynamic Zoom ADC with Switched Resistor Technique for Reducing Thermal Noise.
ISCAS
Jaedo Kim, Taehun Kim, Yeonhong Kim, Jeongjin Roh
2025 J jnl
A Charge-Domain ELDC Technique With CDAC-Reusing for High-Speed Delta-Sigma Modulators.
IEEE Access
Jihun Choi, Taehun Kim, Jiseop Lee, Woong-Taek Lim, Hyungdong Roh, Kyung-Hoon Lee, Michael Choi, Jeongjin Roh
2025 J jnl
Ultralow-Power ECG Monitoring Sensor Based on a Continuous-Time Delta-Sigma Modulator With an On-Chip PMIC.
IEEE Trans. Instrum. Meas.
Jaedo Kim, Tian Guo, Quanzhen Duan, Jiho Moon, Yeonhong Kim, Jeongjin Roh
2024 J jnl
A 464-nA Quiescent Current Buck Converter With 93.7% Peak Efficiency for IoT Devices.
IEEE Trans. Ind. Electron.
Tian Guo, Quanzhen Duan, Minseok Lee, Jeongjin Roh
2024 J jnl
A 54-nA Quiescent Current Capless LDO With -39-dB PSRR at 1 MHz Using a Load-Tracking Bandwidth Extension Technique.
IEEE Trans. Circuits Syst. II Express Briefs
Taehyun Kim, Byeongik Kim, Jeongjin Roh
2024 J jnl
A High-PSRR NMOS LDO Regulator With Intrinsic Gain-Tracking Ripple Cancellation Technique.
IEEE Trans. Circuits Syst. I Regul. Pap.
Jung Sik Kim, Seunggyun Ha, Hongyup Jeong, Jeongjin Roh
2024 J jnl
A Less-Delay and Wide Conversion-Voltage-Range Level Shifter by Using Switched-Capacitor Technique for Power-Efficiency Health Electronics.
IEEE Trans. Consumer Electron.
Quanzhen Duan, Tao Tao, Wuxiong Weng, Shengming Huang, Yuhua Liang, Jeongjin Roh, Xinpeng Xing
2024 — conf
A Robust DT ∆Σ Modulator for High-Resolution Sensor Against Temperature Variations.
ISOCC
Jihun Choi, Sangwook Na, Taehun Kim, Jeongjin Roh
2024 J jnl
Automatic Tuning of Negative-R Circuit for High-Performance 95-dB DR 5-kHz Bandwidth Continuous-Time Delta-Sigma Modulator.
IEEE Trans. Circuits Syst. I Regul. Pap.
Hwaseong Shin, Seokjae Song, Hyunji Jeong, Quanzhen Duan, Jeongjin Roh
2024 J jnl
High-Precision Built-In Phase Noise Measurement Circuit With a Hybrid ΔΣ Time-to-Digital Converter for SoC Clocking Applications.
IEEE Trans. Circuits Syst. II Express Briefs
Jihun Choi, Sangwook Na, Hojin Kim, Hyungdong Roh, Youngjae Cho, Michael Choi, Min-Seong Choo, Jeongjin Roh
2023 J jnl
103.1-dB DR Switched-Resistor Delta-Sigma Modulator With Chopped Negative-R for Suppressing Low-Bandwidth Noise.
IEEE Access
Hwaseong Shin, Quanzhen Duan, Jaedo Kim, Sangwook Na, Jeongjin Roh
2023 J jnl
A 13.5-nA Quiescent Current LDO With Adaptive Ultra-Low-Power Mode for Low-Power IoT Applications.
IEEE Trans. Circuits Syst. II Express Briefs
Jung Sik Kim, Khurram Javed, Kyounghyun Min, Jeongjin Roh
2023 C conf
A 860.8-nW Low-Power Continuous-Time Delta-Sigma Modulator With Switched Resistors for Sensor Applications.
ISCAS
Jaedo Kim, Hwaseong Shin, Sangwook Na, Quanzhen Duan, Jeongjin Roh
2023 — conf
Bootstrap Capacitor Charge Control Method for GaN-based 4-Switch Buck-Boost Converter.
ICECS
Minseok Lee, Dongsu Lee, Jeongjin Roh
2023 — conf
Design of High PSRR Bandgap Reference Using Impedance-Splitting Negative-R-Assisted Technique.
ICECS
Jung Sik Kim, Jeongjin Roh
2023 J jnl
Design of a Low-Power and Area-Efficient LDO Regulator Using a Negative-R-Assisted Technique.
IEEE Trans. Circuits Syst. II Express Briefs
Jung Sik Kim, Khurram Javed, Jeongjin Roh
2022 J jnl
A 0.9-μA Quiescent Current High PSRR Low Dropout Regulator Using a Capacitive Feed-Forward Ripple Cancellation Technique.
IEEE J. Solid State Circuits
Tian Guo, Woobin Kang, Jeongjin Roh
2022 J jnl
A 2.16-μW Low-Power Continuous-Time Delta-Sigma Modulator With Improved-Linearity Gₘ for Wearable ECG Application.
IEEE Trans. Circuits Syst. II Express Briefs
Jaedo Kim, Quanzhen Duan, Jihun Choi, Chiho Song, Jeongjin Roh
2021 J jnl
100.5 dB SNDR Analog Front-End With a Resistor-Based Discrete-Time Delta-Sigma Modulator for Eliminating Switching Noise and Harmonics.
IEEE Access
Seokjae Song, Jaedo Kim, Jeongjin Roh
2021 J jnl
300 mA LDO Using 0.94 μA I
IEEE Access
Inho Jeon, Tian Guo, Jeongjin Roh
2021 — conf
A Constant On-Time Buck Converter with Fully Integrated Average Current Sensing Scheme.
ISOCC
Inho Jeon, Kyounghyun Min, Jinwoo Park, Jeongjin Roh, Deok-Ju Moon, Hyoung-rae Kim
2021 J jnl
A Current-Mode Four-Phase Synchronous Buck Converter With Dynamic Dead-Time Control.
IEEE Access
Jun Tang, Tian Guo, Jung Sik Kim, Jeongjin Roh
2020 J jnl
60-V Non-Inverting Four-Mode Buck-Boost Converter With Bootstrap Sharing for Non-Switching Power Transistors.
IEEE Access
Jiho Moon, Jaeseong Lee, Seungjin Kim, Gyeongha Ryu, Ju-Pyo Hong, Juhyun Lee, Haifeng Jin, Jeongjin Roh
2020 J jnl
A High Slew-Rate Enhancement Class-AB Operational Transconductance Amplifier (OTA) for Switched-Capacitor (SC) Applications.
IEEE Access
Jaedo Kim, Seokjae Song, Jeongjin Roh
2019 J jnl
A 20-MHz bandwidth, 75-dB dynamic range, continuous-time delta-sigma modulator with reduced nonidealities.
Int. J. Circuit Theory Appl.
Seokjae Song, Jaeseong Lee, Jeongjin Roh
2019 — conf
A Power Supply Rejection Compensated External Capacitor-Less Low Drop-Out Regulator.
ISOCC
Tian Guo, Jiho Moon, Jeongjin Roh
2019 J jnl
Low-Power Fast-Transient Capacitor-Less LDO Regulator With High Slew-Rate Class-AB Amplifier.
IEEE Trans. Circuits Syst. II Express Briefs
Jun Tang, Jaeseong Lee, Jeongjin Roh
2017 J jnl
A 17.4-b Delta-Sigma Capacitance-to-Digital Converter for One-Terminal Capacitive Sensors.
IEEE Trans. Circuits Syst. II Express Briefs
Youngjae Jung, Quanzhen Duan, Jeongjin Roh
2017 J jnl
Fast-transient DC-DC converter using a high-performance error amplifier with a rapid output-voltage control technique.
Int. J. Circuit Theory Appl.
Khurram Javed, Jaejin Yeo, Jaeseong Lee, Jeongjin Roh
2016 J jnl
A 1.2 V 83 dB DR single-ended input SC ΔΣ modulator including a large-swing analog buffer for portable ECG applications.
Int. J. Circuit Theory Appl.
Quanzhen Duan, Youngjae Jung, Danbi Choi, Jeongjin Roh, Jongpal Kim
2016 J jnl
A 7.5-μW 0.08-mm
Int. J. Circuit Theory Appl.
Quanzhen Duan, Zhidong Wang, Jeongjin Roh
2016 J jnl
A Delta-Sigma Modulator for Low-Power Analog Front Ends in Biomedical Instrumentation.
IEEE Trans. Instrum. Meas.
Younghyun Yoon, Quanzhen Duan, Jaejin Yeo, Jeongjin Roh, Jongjin Kim, Dongwook Kim
2016 J jnl
LDO regulator with high power supply rejection at 10 MHz.
IEICE Electron. Express
Khurram Javed, Jeongjin Roh
2015 J jnl
A 0.4 V 63 µW 76.1 dB SNDR 20 kHz Bandwidth Delta-Sigma Modulator Using a Hybrid Switching Integrator.
IEEE J. Solid State Circuits
Younghyun Yoon, Danbi Choi, Jeongjin Roh
2015 J jnl
A 1.2-V 4.2- ppm°C High-Order Curvature-Compensated CMOS Bandgap Reference.
IEEE Trans. Circuits Syst. I Regul. Pap.
Quanzhen Duan, Jeongjin Roh
2014 J jnl
A Current Regulator for Inverter-Based Massively Column-Parallel ΔΣ ADCs.
IEEE Trans. Circuits Syst. II Express Briefs
Jaejin Yeo, Yongsuk Choi, Jeongjin Roh, Gunhee Han, Youngcheol Chae, Seogheon Ham
2014 J jnl
A Multiphase Buck Converter With a Rotating Phase-Shedding Scheme For Efficient Light-Load Control.
IEEE J. Solid State Circuits
Youngkook Ahn, Inho Jeon, Jeongjin Roh
2014 J jnl
A True 0.4-V Delta-Sigma Modulator Using a Mixed DDA Integrator Without Clock Boosted Switches.
IEEE Trans. Circuits Syst. II Express Briefs
Younghyun Yoon, Hyungdong Roh, Jeongjin Roh
2013 J jnl
An Input-Feedforward Multibit Adder-Less Delta -Sigma Modulator for Ultrasound Imaging Systems.
IEEE Trans. Instrum. Meas.
Youngjae Jung, Hyungdong Roh, Jeongjin Roh
2012 J jnl
A 0.018% THD+N, 88-dB PSRR PWM Class-D Amplifier for Direct Battery Hookup.
IEEE J. Solid State Circuits
Youngkil Choi, Wonho Tak, Younghyun Yoon, Jeongjin Roh, Sunwoo Kwon, Jinseok Koh
2012 J jnl
A Bufferless Interface for Single-Ended ECM Sensors.
IEEE Trans. Instrum. Meas.
Youngkil Choi, Hyungdong Roh, Jeongjin Roh
2010 J jnl
DC-DC switching converter with positive and negative outputs for active-matrix LCD bias.
IET Circuits Devices Syst.
Hyunseok Nam, InSeok Kim, Youngkook Ahn, Jeongjin Roh
2009 J jnl
A 0.6-V Delta-Sigma Modulator With Subthreshold-Leakage Suppression Switches.
IEEE Trans. Circuits Syst. II Express Briefs
Hyungdong Roh, Hyoungjoong Kim, Youngkil Choi, Jeongjin Roh, Yi-Gyeong Kim, Jong-Kee Kwon
2009 J jnl
A 99-dB DR Fourth-Order Delta-Sigma Modulator for 20-kHz Bandwidth Sensor Applications.
IEEE Trans. Instrum. Meas.
Youngkil Choi, Jeongjin Roh, Hyungdong Roh, Hyunseok Nam, Songjun Lee
2008 — conf
99-dB High-Performance Delta-Sigma Modulator for 20-kHz Bandwidth.
DELTA
Youngkil Choi, Hyungdong Roh, Hyunseok Nam, Jeongjin Roh
2008 J jnl
A 0.9-V 60-µW 1-Bit Fourth-Order Delta-Sigma Modulator With 83-dB Dynamic Range.
IEEE J. Solid State Circuits
Jeongjin Roh, San-Ho Byun, Youngkil Choi, Hyungdong Roh, Yi-Gyeong Kim, Jong-Kee Kwon
2008 J jnl
Class-D Audio Amplifier Using 1-Bit Fourth-Order Delta-Sigma Modulation.
IEEE Trans. Circuits Syst. II Express Briefs
Kyoungsik Kang, Jeongjin Roh, Youngkil Choi, Hyungdong Roh, Hyunsuk Nam, Songjun Lee
2005 J jnl
High-performance error amplifier for fast transient DC-DC converters.
IEEE Trans. Circuits Syst. II Express Briefs
Jeongjin Roh
2004 J jnl
Subband filtering for time and frequency analysis of mixed-signal circuit testing.
IEEE Trans. Instrum. Meas.
Jeongjin Roh, Jacob A. Abraham
2003 J jnl
A comprehensive signature analysis scheme for oscillation-test.
IEEE Trans. Comput. Aided Des. Integr. Circuits Syst.
Jeongjin Roh, Jacob A. Abraham
2003 — conf
Efficient loop-back testing of on-chip ADCs and DACs.
ASP-DAC
Hak-Soo Yu, Jacob A. Abraham, Sungbae Hwang, Jeongjin Roh
2000 Misc conf
A Comprehensive TDM Comparator Scheme for Effective Analysis of Oscillation-Based Test.
VTS
Jeongjin Roh, Jacob A. Abraham
2000 Misc conf
A Mixed-Signal BIST Scheme with Time-Division Multiplexing (TDM) Comparator and Counters.
VLSI Design
Jeongjin Roh, Jacob A. Abraham
2000 A conf
Verification of Delta-Sigma Converters Using Adaptive Regression Modeling.
ICCAD
Jeongjin Roh, Suresh Seshadri, Jacob A. Abraham
1999 A conf
Subband filtering scheme for analog and mixed-signal circuit testing.
ITC
Jeongjin Roh, Jacob A. Abraham
1998 — conf
A New Set Partitioning Method for Wavelet-based Image Coding.
ICIP (1)
Jeongjin Roh, David J. Miller