99-dB High-Performance Delta-Sigma Modulator for 20-kHz Bandwidth. - Youngkil Choi; Hyungdong Roh; Hyunseok Nam; Jeongjin Roh (DELTA, 2008)

A 0.9-V 60-µW 1-Bit Fourth-Order Delta-Sigma Modulator With 83-dB Dynamic Range. - Jeongjin Roh; San-Ho Byun; Youngkil Choi; Hyungdong Roh; Yi-Gyeong Kim; Jong-Kee Kwon (IEEE J. Solid State Circuits, 2008)

Class-D Audio Amplifier Using 1-Bit Fourth-Order Delta-Sigma Modulation. - Kyoungsik Kang; Jeongjin Roh; Youngkil Choi; Hyungdong Roh; Hyunsuk Nam; Songjun Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2008)

A 0.6-V Delta-Sigma Modulator With Subthreshold-Leakage Suppression Switches. - Hyungdong Roh; Hyoungjoong Kim; Youngkil Choi; Jeongjin Roh; Yi-Gyeong Kim; Jong-Kee Kwon (IEEE Trans. Circuits Syst. II Express Briefs, 2009)

A 99-dB DR Fourth-Order Delta-Sigma Modulator for 20-kHz Bandwidth Sensor Applications. - Youngkil Choi; Jeongjin Roh; Hyungdong Roh; Hyunseok Nam; Songjun Lee (IEEE Trans. Instrum. Meas., 2009)

A Bufferless Interface for Single-Ended ECM Sensors. - Youngkil Choi; Hyungdong Roh; Jeongjin Roh (IEEE Trans. Instrum. Meas., 2012)

An Input-Feedforward Multibit Adder-Less Delta -Sigma Modulator for Ultrasound Imaging Systems. - Youngjae Jung; Hyungdong Roh; Jeongjin Roh (IEEE Trans. Instrum. Meas., 2013)

A True 0.4-V Delta-Sigma Modulator Using a Mixed DDA Integrator Without Clock Boosted Switches. - Younghyun Yoon; Hyungdong Roh; Jeongjin Roh (IEEE Trans. Circuits Syst. II Express Briefs, 2014)

A 12b 600MS/s Pipelined SAR and 2x-Interleaved Incremental Delta-Sigma ADC with Source-Follower-Based Residue-Transfer Scheme in 7nm FinFET. - Seung-Yeob Baek 002; Il-Hoon Jang; Michael Choi; Hyungdong Roh; Woongtaek Lim; Youngjae Cho; Jongshin Shin (ISSCC, 2021)

High-Precision Built-In Phase Noise Measurement Circuit With a Hybrid ΔΣ Time-to-Digital Converter for SoC Clocking Applications. - Jihun Choi; Sangwook Na; Hojin Kim; Hyungdong Roh; Youngjae Cho; Michael Choi; Min-Seong Choo; Jeongjin Roh (IEEE Trans. Circuits Syst. II Express Briefs, 2024)