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Sohmyung Ha
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2020 – today
- 2023
- [j27]Donghee Cho
, Hyungjoo Cho
, Sein Oh
, Yoontae Jung
, Sohmyung Ha
, Chul Kim
, Minkyu Je
:
A High-Efficiency Single-Mode Dual-Path Buck-Boost Converter With Reduced Inductor Current. IEEE J. Solid State Circuits 58(3): 720-731 (2023) - [j26]Song-I Cheon
, Soon-Jae Kweon
, Aida Aberra
, Minkyu Je
, Sohmyung Ha
:
Optimal Parameter Design of DAC-Based Sinusoidal Signal Generators for Electrical Impedance Spectroscopy. IEEE Trans. Instrum. Meas. 72: 1-11 (2023) - [c35]Edward Jongyoon Choi, Injun Choi, Vincent Lukito, Dong-Hwi Choi, Donghyeon Yi, Ik-Joon Chang, Sohmyung Ha, Minkyu Je:
A 333TOPS/W Logic-Compatible Multi-Level Embedded Flash Compute-In-Memory Macro with Dual-Slope Computation. CICC 2023: 1-2 - [c34]Hoyong Seong, Donghyun Youn, Injun Choi, Junghyup Lee, Sohmyung Ha, Minkyu Je:
A 0.9V 2MHz 6.4x-Slope-Boosted Quadrature-Phase Relaxation Oscillator with 164.2dBc/Hz FoM and 62.5ppm Period Jitter in 0.18μm CMOS. CICC 2023: 1-2 - 2022
- [j25]Injun Choi
, Edward Jongyoon Choi
, Donghyeon Yi, Yoontae Jung
, Hoyong Seong, Hyuntak Jeon, Soon-Jae Kweon
, Ik-Joon Chang
, Sohmyung Ha
, Minkyu Je
:
An SRAM-Based Hybrid Computation-in-Memory Macro Using Current-Reused Differential CCO. IEEE J. Emerg. Sel. Topics Circuits Syst. 12(2): 536-546 (2022) - [j24]Yoontae Jung
, Soon-Jae Kweon
, Hyuntak Jeon, Injun Choi
, Jimin Koo, Mi Kyung Kim
, Hyunjoo Jenny Lee
, Sohmyung Ha
, Minkyu Je
:
A Wide-Dynamic-Range Neural-Recording IC With Automatic-Gain-Controlled AFE and CT Dynamic-Zoom ΔΣ ADC for Saturation-Free Closed-Loop Neural Interfaces. IEEE J. Solid State Circuits 57(10): 3071-3082 (2022) - [j23]Song-I Cheon
, Soon-Jae Kweon
, Youngin Kim, Jimin Koo, Sohmyung Ha
, Minkyu Je
:
An Impedance Readout IC with Ratio-Based Measurement Techniques for Electrical Impedance Spectroscopy. Sensors 22(4): 1563 (2022) - [j22]Soon-Jae Kweon
, Jeong-Ho Park, Chong-Ook Park, Hyung-Joun Yoo, Sohmyung Ha
:
Wireless Kitchen Fire Prevention System Using Electrochemical Carbon Dioxide Gas Sensor for Smart Home. Sensors 22(11): 3965 (2022) - [j21]Soon-Jae Kweon
, Ayesha Kajol Rafi
, Song-I Cheon
, Minkyu Je
, Sohmyung Ha
:
On-Chip Sinusoidal Signal Generators for Electrical Impedance Spectroscopy: Methodological Review. IEEE Trans. Biomed. Circuits Syst. 16(3): 337-360 (2022) - [j20]Kyeongwon Jeong
, Yoontae Jung
, Gichan Yun
, Donghyun Youn
, Yehhyun Jo
, Hyunjoo Jenny Lee, Sohmyung Ha
, Minkyu Je
:
A PVT-Robust AFE-Embedded Error-Feedback Noise-Shaping SAR ADC With Chopper-Based Passive High-Pass IIR Filtering for Direct Neural Recording. IEEE Trans. Biomed. Circuits Syst. 16(4): 679-691 (2022) - [j19]Hyungjoo Cho
, Ji-Hoon Suh
, Chul Kim
, Sohmyung Ha
, Minkyu Je
:
An Intra-Body Power Transfer System With $>$1-mW Power Delivered to the Load and 3.3-V DC Output at 160-cm of on-Body Distance. IEEE Trans. Biomed. Circuits Syst. 16(5): 852-866 (2022) - [j18]Yoontae Jung
, Soon-Jae Kweon
, Taeju Lee
, Kyeongwon Jeong
, Sohmyung Ha
, Minkyu Je
:
Dynamic-Range-Enhancement Techniques for Artifact-Tolerant Biopotential-Acquisition ICs. IEEE Trans. Circuits Syst. II Express Briefs 69(7): 3090-3095 (2022) - [c33]Muhammad Abrar Akram, Sohmyung Ha:
A 433.92-MHz CMOS Rectifier with Dynamic VTH-reduction for Wireless Biomedical Implants. BioCAS 2022: 16-20 - [c32]Donghee Cho, Hyungjoo Cho, Sein Oh, Yoontae Jung, Sohmyung Ha
, Chul Kim, Minkyu Je:
A Single-Mode Dual-Path Buck-Boost Converter with Reduced Inductor Current Across All Duty Cases Achieving 95.58% Efficiency at 1A in Boost Operation. CICC 2022: 1-2 - [c31]Edward Jongyoon Choi, Injun Choi, Chanhee Jeon, Gichan Yun
, Donghyeon Yi, Sohmyung Ha
, Ik-Joon Chang, Minkyu Je:
A 133.6TOPS/W Compute-In-Memory SRAM Macro with Fully Parallel One-Step Multi-Bit Computation. CICC 2022: 1-2 - [c30]Kyeongwon Jeong, Gichan Yun
, Sohmyung Ha, Minkyu Je:
A 600mVPP-Input-Range 94.5dB-SNDR NS-SAR-Nested DSM with 4th-Order Truncation-Error Shaping and Input-Impedance Boosting for Biosignal Acquisition. VLSI Technology and Circuits 2022: 52-53 - [c29]Phan Dang Hung, Hongseok Shin, Yechan Park, Nguyen Kim Hoang, Donghee Cho, Sohmyung Ha, Chul Kim, Minkyu Je:
A 96.5%-Power-Efficiency Hybrid Buck-Boost Photovoltaic Energy Harvester Employing Adaptive FOCV MPPT Control for >98% MPPT Efficiency Across a 10, 000× Dynamic Range. VLSI Technology and Circuits 2022: 200-201 - 2021
- [j17]Muhammad Abrar Akram
, In-Chul Hwang
, Sohmyung Ha
:
Power Delivery Networks for Embedded Mobile SoCs: Architectural Advancements and Design Challenges. IEEE Access 9: 46573-46588 (2021) - [j16]Soon-Jae Kweon
, Woojin Yun, Hyunwoo Park
, Jeong-Ho Park
, Jung Hoon Lee
, Jin Lee
, Minkyu Je
, Sohmyung Ha
, Choul-Young Kim
:
A Precise Lesion Localization System Using a Magnetometer With Real-Time Baseline Cancellation for Laparoscopic Surgery. IEEE Access 9: 131648-131657 (2021) - [j15]Song-I Cheon
, Soon-Jae Kweon
, Youngin Kim, Jimin Koo, Sohmyung Ha
, Minkyu Je
:
A Polar-Demodulation-Based Impedance-Measurement IC Using Frequency-Shift Technique With Low Power Consumption and Wide Frequency Range. IEEE Trans. Biomed. Circuits Syst. 15(6): 1210-1220 (2021) - [j14]Yechan Park
, Seok-Tae Koh
, Jeongeun Lee
, Hongkyun Kim
, Jaesuk Choi
, Sohmyung Ha
, Chul Kim
, Minkyu Je
:
A Wireless Power and Data Transfer IC for Neural Prostheses Using a Single Inductive Link With Frequency-Splitting Characteristic. IEEE Trans. Biomed. Circuits Syst. 15(6): 1306-1319 (2021) - [j13]Jaesuk Choi
, Sangyeon Youn
, Jae Youn Hwang
, Sohmyung Ha
, Chul Kim
, Minkyu Je
:
Energy-Efficient High-Voltage Pulsers for Ultrasound Transducers. IEEE Trans. Circuits Syst. II Express Briefs 68(1): 19-23 (2021) - [j12]Muhammad Abrar Akram
, Wook Hong, Sohmyung Ha
, In-Chul Hwang
:
Capacitor-Less Dual-Mode All-Digital LDO With ΔΣ-Modulation-Based Ripple Reduction. IEEE Trans. Circuits Syst. II Express Briefs 68(5): 1620-1624 (2021) - [c28]Yoontae Jung, Soon-Jae Kweon, Hyuntak Jeon, Taeju Lee, Injun Choi, Kyeongwon Jeong, Mi Kyung Kim, Hyunjoo Jenny Lee, Sohmyung Ha
, Minkyu Je:
A 99.5dB-DR 5kHz-BW Closed-Loop Neural-Recording IC based on Continuous-Time Dynamic-Zoom ΔΣ ADC with Automatic AFE-Gain Control. A-SSCC 2021: 1-3 - [c27]Jinuk Kim, Hongseok Shin, Soon-Jae Kweon, Seongwook Lee, Sohmyung Ha
, Minkyu Je:
A Scalable Readout IC Based on Wideband Noise Cancelling for Full-Rate Scanning of High-Density Microelectrode Arrays. EMBC 2021: 7344-7347 - [c26]Donghee Cho, Hongseok Shin, Hyunwoo Park, Sein Oh, Taeju Lee, Sohmyung Ha
, Chul Kim, Minkyu Je:
A Load-Current-Regulating OLED Lamp Driver Using a Hybrid Step-Up Converter with 93.21% Efficiency at a High Conversion Ratio of 4.1. ESSCIRC 2021: 315-318 - [c25]Song-I Cheon, Soon-Jae Kweon, Youngin Kim, Sohmyung Ha
, Minkyu Je:
A Power-Efficient, Wide-Frequency-Range Impedance Measurement IC Using Frequency-Shift Technique. ISCAS 2021: 1-5 - [c24]Yechan Park, Seok-Tae Koh, Jeongeun Lee, Hongkyun Kim
, Jaesuk Choi, Sohmyung Ha
, Chul Kim, Minkyu Je:
A Frequency-Splitting-Based Wireless Power and Data Transfer IC for Neural Prostheses with Simultaneous 115mWPower and 2.5Mb/s Forward Data Delivery. ISSCC 2021: 472-474 - [c23]Jaesuk Choi, Yechan Park, Jung Bum Oh, Jun-Young Kim, Jae Youn Hwang, Sohmyung Ha
, Chul Kim, Minkyu Je:
34.4 An Energy-Replenishing Ultrasound Pulser with 0.25CV2 f Dynamic Power Consumption. ISSCC 2021: 486-488 - [c22]Phan Dang Hung, Yechan Park, Soon-Jae Kweon, Taeju Lee, Hyuntak Jeon, Seok-Tae Koh, Incheol Cho, Jun-Bo Yoon, Inkyu Park, Chul Kim, Sohmyung Ha
, Minkyu Je:
A Self-Powered Wireless Gas Sensor Node Based on Photovoltaic Energy Harvesting. VLSI Circuits 2021: 1-2 - [c21]Soon-Jae Kweon, Joonho Gil, Chulhyun Park, Sein Oh, Yoontae Jung, Injun Choi
, Song-I Cheon, Hung Phan Dang, Ja-Hyuck Koo, Geunhoe Kim, Sohmyung Ha
, Minkyu Je:
An 8MHz 31.25kS/s Impedance-Monitoring IC Based on IF-Sampling Architecture with a Band-Pass Delta-Sigma ADC. VLSI Circuits 2021: 1-2 - [c20]Hongseok Shin, Doojin Jang, Gyeong-Gu Kang, Jinuk Kim, Chul Kim, Sohmyung Ha
, Minkyu Je:
A 96.6%-Efficiency Continuous-Input-Current Hybrid Dual-Path Buck-Boost Converter with Single-Mode Operation and Non-Stopping Output Current Delivery. VLSI Circuits 2021: 1-2 - 2020
- [j11]Kai-Wen Yang
, Keonghwan Oh
, Sohmyung Ha
:
Challenges in Scaling Down of Free-Floating Implantable Neural Interfaces to Millimeter Scale. IEEE Access 8: 133295-133320 (2020) - [j10]Muhammad Abrar Akram
, In-Chul Hwang
, Sohmyung Ha
:
Architectural Advancement of Digital Low-Dropout Regulators. IEEE Access 8: 137838-137855 (2020) - [c19]Rajkumar Kubendran, Jongkil Park, Ritvik Sharma, Chul Kim, Siddharth Joshi, Gert Cauwenberghs, Sohmyung Ha:
A 4.2-pJ/Conv 10-b Asynchronous ADC with Hybrid Two-Tier Level-Crossing Event Coding. ISCAS 2020: 1-5 - [c18]Hongseok Shin, Jinuk Kim, Doojin Jang, Donghee Cho, Yoontae Jung, Hyungjoo Cho, Unbong Lee, Chul Kim, Sohmyung Ha
, Minkyu Je:
A 0.0046mm2 6.7μW Three-Stage Amplifier Capable of Driving 0.5-to-1.9nF Capacitive Load with >0.68MHz GBW without Compensation Zero. VLSI Circuits 2020: 1-2
2010 – 2019
- 2019
- [j9]Sohmyung Ha
, Chul Kim
, Jiwoong Park, Gert Cauwenberghs
, Patrick P. Mercier
:
A Fully Integrated RF-Powered Energy-Replenishing Current-Controlled Stimulator. IEEE Trans. Biomed. Circuits Syst. 13(1): 191-202 (2019) - [j8]Saqib Subhan
, Sohmyung Ha
:
A Harmonic Error Cancellation Method for Accurate Clock-Based Electrochemical Impedance Spectroscopy. IEEE Trans. Biomed. Circuits Syst. 13(4): 710-724 (2019) - [j7]Chul Kim
, Jiwoong Park
, Sohmyung Ha
, Abraham Akinin
, Rajkumar Kubendran
, Patrick P. Mercier
, Gert Cauwenberghs
:
A 3 mm × 3 mm Fully Integrated Wireless Power Receiver and Neural Interface System-on-Chip. IEEE Trans. Biomed. Circuits Syst. 13(6): 1736-1746 (2019) - [c17]Saqib Subhan
, Sachin Khapli, Yong-Ak Song
, Sohmyung Ha
:
A Fully Differential Potentiostat Circuit with Integrated Time-based ADCs. BioCAS 2019: 1-4 - 2018
- [j6]Chul Kim
, Chang-Seok Chae, Young-Sub Yuk, Chris M. Thomas, Yi-Gyeong Kim, Jong-Kee Kwon, Sohmyung Ha
, Gert Cauwenberghs
, Gyu-Hyeong Cho:
A 500-MHz Bandwidth 7.5-mVpp Ripple Power-Amplifier Supply Modulator for RF Polar Transmitters. IEEE J. Solid State Circuits 53(6): 1653-1665 (2018) - [c16]Neeraj K. Mandloi, Sohmyung Ha
:
Magnetically Balanced Power and Data Telemetry for mm-scale Neural Implants. EMBC 2018: 3378-3381 - [c15]Saqib Subhan
, Sohmyung Ha
:
Harmonic Error Cancellation for Accurate Square-wave-based Bio-Impedance Measurements. EMBC 2018: 4273-4276 - 2017
- [j5]Chul Kim
, Sohmyung Ha
, Jiwoong Park, Abraham Akinin
, Patrick P. Mercier
, Gert Cauwenberghs:
A 144-MHz Fully Integrated Resonant Regulating Rectifier With Hybrid Pulse Modulation for mm-Sized Implants. IEEE J. Solid State Circuits 52(11): 3043-3055 (2017) - [j4]Sohmyung Ha
, Abraham Akinin
, Jiwoong Park, Chul Kim, Hui Wang
, Christoph Maier, Patrick P. Mercier
, Gert Cauwenberghs:
Silicon-Integrated High-Density Electrocortical Interfaces. Proc. IEEE 105(1): 11-33 (2017) - [c14]Jiwoong Park, Chul Kim, Abraham Akinin, Sohmyung Ha
, Gert Cauwenberghs, Patrick P. Mercier
:
Wireless powering of mm-scale fully-on-chip neural interfaces. BioCAS 2017: 1-4 - [c13]Siddharth Joshi, Chul Kim, Sohmyung Ha
, Gert Cauwenberghs:
From algorithms to devices: Enabling machine learning through ultra-low-power VLSI mixed-signal array processing. CICC 2017: 1-9 - [c12]Chul Kim, Sohmyung Ha
, Abraham Akinin
, Jiwoong Park, Rajkumar Kubendran
, Hui Wang
, Patrick P. Mercier
, Gert Cauwenberghs:
Design of miniaturized wireless power receivers for mm-sized implants. CICC 2017: 1-8 - [c11]Siddharth Joshi, Chul Kim, Sohmyung Ha
, Yu Mike Chi, Gert Cauwenberghs:
21.7 2pJ/MAC 14b 8×8 linear transform mixed-signal spatial filter in 65nm CMOS with 84dB interference suppression. ISSCC 2017: 364-365 - 2016
- [j3]Chul Kim, Siddharth Joshi, Chris M. Thomas, Sohmyung Ha
, Lawrence E. Larson, Gert Cauwenberghs:
A 1.3 mW 48 MHz 4 Channel MIMO Baseband Receiver With 65 dB Harmonic Rejection and 48.5 dB Spatial Signal Separation. IEEE J. Solid State Circuits 51(4): 832-844 (2016) - [j2]Sohmyung Ha
, Chul Kim, Jongkil Park, Siddharth Joshi, Gert Cauwenberghs:
Energy Recycling Telemetry IC With Simultaneous 11.5 mW Power and 6.78 Mb/s Backward Data Delivery Over a Single 13.56 MHz Inductive Link. IEEE J. Solid State Circuits 51(11): 2664-2678 (2016) - [c10]Chul Kim, Jiwoong Park, Abraham Akinin, Sohmyung Ha
, Rajkumar Kubendran
, Hui Wang
, Patrick P. Mercier
, Gert Cauwenberghs:
A fully integrated 144 MHz wireless-power-receiver-on-chip with an adaptive buck-boost regulating rectifier and low-loss H-Tree signal distribution. VLSI Circuits 2016: 1-2 - 2015
- [c9]Sohmyung Ha
, Abraham Akinin, Jongkil Park, Chul Kim, Hui Wang
, Christoph Maier, Gert Cauwenberghs, Patrick P. Mercier
:
A 16-channel wireless neural interfacing SoC with RF-powered energy-replenishing adiabatic stimulation. VLSIC 2015: 106- - [c8]Chul Kim, Sohmyung Ha
, Jiwoong Park, Abraham Akinin, Patrick P. Mercier
, Gert Cauwenberghs:
A 144MHz integrated resonant regulating rectifier with hybrid pulse modulation. VLSIC 2015: 284- - [c7]Chul Kim, Siddharth Joshi, Chris M. Thomas, Sohmyung Ha
, Abraham Akinin, Lawrence E. Larson, Gert Cauwenberghs:
A CMOS 4-channel MIMO baseband receiver with 65dB harmonic rejection over 48MHz and 50dB spatial signal separation over 3MHz at 1.3mW. VLSIC 2015: 304- - 2014
- [j1]Sohmyung Ha
, Chul Kim, Yu M. Chi, Abraham Akinin
, Christoph Maier, Akinori Ueno
, Gert Cauwenberghs:
Integrated Circuits and Electrode Interfaces for Noninvasive Physiological Monitoring. IEEE Trans. Biomed. Eng. 61(5): 1522-1537 (2014) - [c6]Jongkil Park, Sohmyung Ha
, Chul Kim, Siddharth Joshi, Theodore Yu, Wei Ma, Gert Cauwenberghs:
A 12.6 mW 8.3 Mevents/s contrast detection 128×128 imager with 75 dB intra-scene DR asynchronous random-access digital readout. BioCAS 2014: 564-567 - [c5]Jongkil Park, Sohmyung Ha
, Theodore Yu, Emre Neftci, Gert Cauwenberghs:
A 65k-neuron 73-Mevents/s 22-pJ/event asynchronous micro-pipelined integrate-and-fire array transceiver. BioCAS 2014: 675-678 - [c4]Chul Kim, Sohmyung Ha
, Chris M. Thomas, Siddharth Joshi, Jongkil Park, Lawrence E. Larson, Gert Cauwenberghs:
A 7.86 mW +12.5 dBm in-band IIP3 8-to-320 MHz capacitive harmonic rejection mixer in 65nm CMOS. ESSCIRC 2014: 227-230 - [c3]Sohmyung Ha
, Chul Kim, Jongkil Park, Siddharth Joshi, Gert Cauwenberghs:
Energy-recycling integrated 6.78-Mbps data 6.3-mW power telemetry over a single 13.56-MHz inductive link. VLSIC 2014: 1-2 - 2013
- [c2]Sohmyung Ha
, Jongkil Park, Yu M. Chi, Jonathan Viventi, John A. Rogers, Gert Cauwenberghs:
85 dB dynamic range 1.2 mW 156 kS/s biopotential recording IC for high-density ECoG flexible active electrode array. ESSCIRC 2013: 141-144 - 2012
- [c1]Sohmyung Ha
, Massoud L. Khraiche, Gabriel A. Silva, Gert Cauwenberghs:
Direct inductive stimulation for energy-efficient wireless neural interfaces. EMBC 2012: 883-886
Coauthor Index

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last updated on 2023-05-22 21:36 CEST by the dblp team
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