A Digital-Domain Calibration of Split-Capacitor DAC for a Differential SAR ADC Without Additional Analog Circuits. - Ji-Yong Um; Yoon-Jee Kim; Eun-Woo Song; Jae-Yoon Sim; Hong-June Park (IEEE Trans. Circuits Syst. I Regul. Pap., 2013)

24.8 An analog-digital-hybrid single-chip RX beamformer with non-uniform sampling for 2D-CMUT ultrasound imaging to achieve wide dynamic range of delay and small chip area. - Ji-Yong Um; Eun-Woo Song; Yoon-Jee Kim; Seong-Eun Cho; Min-Kyun Chae; Jongkeun Song; Bae-Hyung Kim; Seunghun Lee; Jihoon Bang; Youngil Kim; Kyungil Cho; Byungsub Kim; et al. (ISSCC, 2014)

An Analog-Digital Hybrid RX Beamformer Chip With Non-Uniform Sampling for Ultrasound Medical Imaging With 2D CMUT Array. - Ji-Yong Um; Yoon-Jee Kim; Seong-Eun Cho; Min-Kyun Chae; Jongkeun Song; Bae-Hyung Kim; Seung-Hun Lee; Jihoon Bang; Youngil Kim; Kyungil Cho; Byungsub Kim; Jae-Yoon Sim; et al. (IEEE Trans. Biomed. Circuits Syst., 2014)

A Single-Chip 32-Channel Analog Beamformer With 4-ns Delay Resolution and 768-ns Maximum Delay Range for Ultrasound Medical Imaging With a Linear Array Transducer. - Ji-Yong Um; Yoon-Jee Kim; Seong-Eun Cho; Min-Kyun Chae; Byungsub Kim; Jae-Yoon Sim; Hong-June Park (IEEE Trans. Biomed. Circuits Syst., 2015)

A Single-Chip 64-Channel Ultrasound RX-Beamformer Including Analog Front-End and an LUT for Non-Uniform ADC-Sample-Clock Generation. - Yoon-Jee Kim; Sung-Eun Cho; Ji-Yong Um; Min-Kyun Chae; Jihoon Bang; Jongkeun Song; Taeho Jeon; Byungsub Kim; Jae-Yoon Sim; Hong-June Park (IEEE Trans. Biomed. Circuits Syst., 2017)