A 2.16-μW Low-Power Continuous-Time Delta-Sigma Modulator With Improved-Linearity Gₘ for Wearable ECG Application. - Jaedo Kim; Quanzhen Duan; Jihun Choi 001; Chiho Song; Jeongjin Roh (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

A Robust DT ∆Σ Modulator for High-Resolution Sensor Against Temperature Variations. - Jihun Choi 001; Sangwook Na; Taehun Kim; Jeongjin Roh (ISOCC, 2024)

High-Precision Built-In Phase Noise Measurement Circuit With a Hybrid ΔΣ Time-to-Digital Converter for SoC Clocking Applications. - Jihun Choi 001; Sangwook Na; Hojin Kim; Hyungdong Roh; Youngjae Cho; Michael Choi 001; Min-Seong Choo; Jeongjin Roh (IEEE Trans. Circuits Syst. II Express Briefs, 2024)

A Charge-Domain ELDC Technique With CDAC-Reusing for High-Speed Delta-Sigma Modulators. - Jihun Choi 001; Taehun Kim; Jiseop Lee; Woong-Taek Lim; Hyungdong Roh; Kyung-Hoon Lee; Michael Choi 001; Jeongjin Roh (IEEE Access, 2025)