A 1.2V 1MS/s 7.65fJ/conversion-step 12-bit hybrid SAR ADC with time-to-digital converter. - Sung-En Hsieh; Cheng-Kang Ho; Chih-Cheng Hsieh (ISCAS, 2015)

An integrated CMOS optical sensing chip for multiple bio-signal detections. - Albert Yen-Chih Chiou; Sung-En Hsieh; Yan-Quan Pan; Chia-Chi Kuo; Chih-Cheng Hsieh (A-SSCC, 2016)

A 0.3V 0.705fJ/conversion-step 10-bit SAR ADC with shifted monotonie switching scheme in 90nm CMOS. - Sung-En Hsieh; Chih-Cheng Hsieh (ISCAS, 2016)

A 0.44fJ/conversion-step 11b 600KS/s SAR ADC with semi-resting DAC. - Sung-En Hsieh; Chih-Cheng Hsieh (VLSI Circuits, 2016)

A 0.3-V 0.705-fJ/Conversion-Step 10-bit SAR ADC With a Shifted Monotonic Switching Procedure in 90-nm CMOS. - Sung-En Hsieh; Chih-Cheng Hsieh (IEEE Trans. Circuits Syst. II Express Briefs, 2016)

A 0.5 V 12-bit SAR ADC using adaptive timedomain comparator with noise optimization. - Chen-Che Kao; Sung-En Hsieh; Chih-Cheng Hsieh (A-SSCC, 2017)

A CMOS Imager for Reflective Pulse Oximeter with Motion Artifact and Ambient Interference Rejections. - Hsiang-Lin Chen; Sung-En Hsieh; Tzu-Hsiang Hsu; Chih-Cheng Hsieh (A-SSCC, 2018)

A 0.4V 13b 270kS/S SAR-ISDM ADC with an opamp-less time-domain integrator. - Sung-En Hsieh; Chih-Cheng Hsieh (ISSCC, 2018)

A 0.44-fJ/Conversion-Step 11-Bit 600-kS/s SAR ADC With Semi-Resting DAC. - Sung-En Hsieh; Chih-Cheng Hsieh (IEEE J. Solid State Circuits, 2018)

A 0.5-V 12-bit SAR ADC Using Adaptive Time-Domain Comparator With Noise Optimization. - Sung-En Hsieh; Chen-Che Kao; Chih-Cheng Hsieh (IEEE J. Solid State Circuits, 2018)

A 0.4-V 13-bit 270-kS/s SAR-ISDM ADC With Opamp-Less Time-Domain Integrator. - Sung-En Hsieh; Chih-Cheng Hsieh (IEEE J. Solid State Circuits, 2019)

A 1.8GHz 12b Pre-Sampling Pipelined ADC with Reference Buffer and OP Power Relaxations. - Sung-En Hsieh; Tzu-Chien Wu; Chun-Chih Hou (ISSCC, 2023)

A 70.85-86.27TOPS/W PVT-Insensitive 8b Word-Wise ACIM with Post-Processing Relaxation. - Sung-En Hsieh; Chun-Hao Wei; Cheng-Xin Xue; Hung-Wei Lin; Wei-Hsuan Tu; En-Jui Chang; Kai-Taing Yang; Po-Heng Chen; Wei-Nan Liao; Li Lian Low; Chia-Da Lee; Allen-Cl Lu; et al. (ISSCC, 2023)