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ORCIDSohmyung Ha
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2020 – today
- 2025
[j39]Yegeun Kim
, Changhun Seok, Yoontae Jung, Soon-Jae Kweon, Sohmyung Ha, Minkyu Je:
A Motion-Artifact-Tolerant Biopotential-Recording IC With a Digital-Assisted Loop. IEEE Trans. Biomed. Circuits Syst. 19(2): 280-290 (2025)- [j38]Sunglim Han, Hoyong Seong, Sein Oh, Jimin Koo, Hanbit Jin, Hye Jin Kim, Sohmyung Ha, Minkyu Je:
A Time-Domain Multi-Channel Resistive-Sensor Interface IC With High Energy Efficiency and Wide Input Range. IEEE Trans. Biomed. Circuits Syst. 19(2): 291-299 (2025) - [c61]Gichan Yun, Haidam Choi, Yoontae Jung, Jiho Myung, Sein Oh, Sohmyung Ha, Minkyu Je:
28.2 A 189.3dB-FoMs 14.5fJ/Conversion-Step Continuous-Time Noise-Shaping SAR Capacitance-to-Digital Converter. ISSCC 2025: 1-3 - [c60]Donghyun Youn, Kyeongwon Jeong, Woongro Youn, Hoyong Seong, Yechan Park, Sohmyung Ha, Minkyu Je:
An 18.5nF-Input-Range PM-SAR-Hybrid Capacitance-to-Digital Converter Achieving 6.1μs Conversion Time at 18.1pF Input Capacitance. ISSCC 2025: 482-484 - 2024
- [j37]Keonghwan Oh, Mohsin Mohammed, Revathi Sukesan, Aleksa Petkovic, Dipesh Chaudhury, Sohmyung Ha:
Optic-Fiber-Based Optogenetic Stimulator With μLED and 3D-Printed Structures for Brain Stimulation. IEEE Access 12: 46319-46328 (2024) - [j36]Donghyun Youn, Youngin Kim, Injun Choi, Yoontae Jung, Hyuntak Jeon, Kyungtae Lee, Soon-Jae Kweon, Sohmyung Ha, Minkyu Je:
A Wide-Dynamic-Range, DC-Coupled, Time-Based Neural-Recording IC With Optimized CCO Frequency. IEEE Access 12: 94354-94366 (2024) - [j35]Kyeongwon Jeong, Sohmyung Ha, Minkyu Je:
A 15.4-ENOB, Fourth-Order Truncation-Error-Shaping NS-SAR-Nested ΔΣ Modulator With Boosted Input Impedance and Range for Biosignal Acquisition. IEEE J. Solid State Circuits 59(2): 528-539 (2024) - [j34]Yoontae Jung, Sein Oh, Sohmyung Ha, Minkyu Je:
A 187-dB FoMS Power-Efficient Second-Order Highpass ΔΣ Capacitance-to-Digital Converter. IEEE J. Solid State Circuits 59(4): 1204-1215 (2024) - [j33]Haidam Choi, Song-I Cheon, Gichan Yun, Sein Oh, Ji-Hoon Suh, Sohmyung Ha, Minkyu Je:
A Bio-Impedance Readout IC With Complex-Domain Noise-Correlated Baseline Cancellation. IEEE J. Solid State Circuits 59(11): 3538-3548 (2024) - [j32]Song-I Cheon, Haidam Choi, Hyoju Kang, Ji-Hoon Suh, Seonghyun Park, Soon-Jae Kweon, Minkyu Je, Sohmyung Ha:
Impedance-Readout Integrated Circuits for Electrical Impedance Spectroscopy: Methodological Review. IEEE Trans. Biomed. Circuits Syst. 18(1): 215-232 (2024) - [j31]Donghyeon Yi, Seoyoung Lee, Injun Choi, Gichan Yun, Edward Jongyoon Choi, Jonghee Park, Jonghoon Kwak, Sung-Joon Jang, Sohmyung Ha, Ik-Joon Chang, Minkyu Je:
Skew-CIM: Process-Variation-Resilient and Energy-Efficient Computation-in-Memory Design Technique With Skewed Weights. IEEE Trans. Circuits Syst. I Regul. Pap. 71(5): 2067-2078 (2024) - [c59]Aida Aberra, Muhammad Abrar Akram, Soon-Jae Kweon, Jongmin Kim, Kim-Hoang Nguyen, Gichan Yun, Minkyu Je, Yong-Ak Song, Sohmyung Ha:
A Hybrid High-voltage Regulating Charge Pump for Electrokinetic Concentration. ISCAS 2024: 1-5 - [c58]Song-I Cheon, Seonghyun Park, Haidam Choi, Yebin Choi, Minho Seok, Young-Ho Cho, Sohmyung Ha, Minkyu Je:
Ultrahigh-G Accelerometer Readout IC with Adaptive Gain Path for Shock Resilience. ISCAS 2024: 1-5 - [c57]Haidam Choi, Ji-Hoon Suh, Gichan Yun, Sein Oh, Song-I Cheon, Sohmyung Ha, Minkyu Je:
A Low-power Δ-ΔΣ-based Bio-impedance Readout IC with Capacitive-feedback Baseline Cancellation. ISCAS 2024: 1-5 - [c56]Karam Ellahi, Soon-Jae Kweon, Asra Malik, Muhammad Abrar Akram, Song-I Cheon, Yoontae Jung, Minkyu Je, Hammad M. Cheema, Sohmyung Ha:
A High-throughput Impedance Measurement IC Using Synchronous Cyclic Integration Technique. ISCAS 2024: 1-5 - [c55]Muhammad Haris Farooq, Muhammad Abrar Akram, Shirin Qaisar, Soon-Jae Kweon, Hammad M. Cheema, Sohmyung Ha:
A Tri-loop Fast-transient Digital LDO with Adaptive-gain Control and Fine-loop Freezer. ISCAS 2024: 1-5 - [c54]Sunglim Han, Hoyong Seong, Sein Oh, Jimin Koo, Hanbit Jin, Hye Jin Kim, Sohmyung Ha, Minkyu Je:
A 72-channel Resistive-sensor Interface IC with High Energy Efficiency and a Wide Input Range. ISCAS 2024: 1-5 - [c53]Yegeun Kim, Changhun Seok, Yoontae Jung, Sohmyung Ha, Minkyu Je:
A Biopotential Recording IC with <10-ms-Settling Hybrid DC Servo Loop. ISCAS 2024: 1-5 - [c52]Jimin Koo, Yoontae Jung, Sein Oh, Sunglim Han, Sohmyung Ha, Minkyu Je:
A Reconfigurable Multimodal Sensor Interface IC Based on Direct-Conversion ΔΣ Modulator Structure. ISCAS 2024: 1-5 - [c51]Asra Malik, Soon-Jae Kweon, Karam Ellahi, Muhammad Abrar Akram, Song-I Cheon, Yoontae Jung, Minkyu Je, Hammad M. Cheema, Sohmyung Ha:
A High-throughput Impedance Measurement IC with Baseline-Canceling Peak Detector. ISCAS 2024: 1-5 - [c50]Shirin Qaisar, Muhammad Abrar Akram, Muhammad Haris Farooq, Soon-Jae Kweon, Hammad M. Cheema, Sohmyung Ha:
An Analog-assisted Fast-transient Digital LDO with a Charge-pump-based Fine Loop Achieving 0.14-mV Output Voltage Ripples. ISCAS 2024: 1-5 - [c49]Chan Park, Sohmyung Ha, Minkyu Je:
A High-Efficiency High-Data-Rate Wireless Power and Data Transfer IC Using Orthogonal Codes for Miniatureized Multi-Channel Neural Interface Systems. ISOCC 2024: 1-3 - [c48]Wonseok Heo, Hoyong Seong, Donghyun Youn, Minkyu Je, Sohmyung Ha:
An Energy Efficient Period-modulation-based Current-to-digital Converter for FET-type Sensors. ISOCC 2024: 77-78 - [c47]Edward Jongyoon Choi, Jiho Chun, Byeongseon Choi, Sohmyung Ha, Ik-Joon Chang, Minkyu Je:
An SRAM-based Error-Free Time Domain Pulse Train Computing-In-Memory Macro achieving 226.14 TOPS/W and 5.782 TOPS/mm2. ISOCC 2024: 119-120 - [c46]Muhammad Abrar Akram, Aida Aberra, Soon-Jae Kweon, Sohmyung Ha:
3.6 An Amplifier-Less CMOS Potentiostat IC Consuming 3.7nW Power all over 129.5dB Dynamic Range for Electrochemical Biosensing. ISSCC 2024: 64-66 - [c45]Song-I Cheon, Haidam Choi, Gichan Yun, Sein Oh, Ji-Hoon Suh, Sohmyung Ha, Minkyu Je:
33.8 A Two-Electrode Bio-Impedance Readout IC with Complex-Domain Noise-Correlated Baseline Cancellation Supporting Sinusoidal Excitation. ISSCC 2024: 556-558 - [c44]Hyungjoo Cho, Dongyoon Lee, Hoyong Sung, Heewon Choee, Ji-Hoon Suh, Injun Choi, Donghee Cho, Sohmyung Ha, Minkyu Je:
An Intra-Body-Power-Transfer System Energized by an Electromagnetic Energy Harvester for Powering Wearable Sensor Nodes. VLSI Technology and Circuits 2024: 1-2 - [c43]Edward Jongyoon Choi, Vincent Lukito, Injun Choi, Seoyoung Lee, Ik-Joon Chang, Sohmyung Ha, Minkyu Je:
A Δ-Based Spike Sorting SoC with End-to-End Implementation of Event-Driven Binary Autoencoder Neural Network in Analog CIM Achieving 94.54% Accuracy and 3.11μW/ch. VLSI Technology and Circuits 2024: 1-2 - [c42]Haidam Choi, Gichan Yun, Ji-Hoon Suh, Sein Oh, Song-I Cheon, Yoontae Jung, Sohmyung Ha, Minkyu Je:
A Fully Dynamic 1st-Order Δ-ΔΣ Modulator with a 468mVpp Input Range for Electrical Impedance Tomography Systems. VLSI Technology and Circuits 2024: 1-2 - [c41]Ji-Hoon Suh, Haidam Choi, Yoontae Jung, Sohmyung Ha, Minkyu Je:
A 5.7kfps Fast Neural Electrical Impedance Tomography IC Based on Incremental Zoom Structure with Baseline Cancellation for Peripheral Nerve Monitoring Systems. VLSI Technology and Circuits 2024: 1-2 - [i1]Donghyeon Yi, Seoyoung Lee, Jongho Kim, Junyoung Kim, Sohmyung Ha, Ik Joon Chang, Minkyu Je:
FLARE: FP-Less PTQ and Low-ENOB ADC Based AMS-PiM for Error-Resilient, Fast, and Efficient Transformer Acceleration. CoRR abs/2411.14733 (2024) - 2023
- [j30]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) - [j29]Chongsoo Jung, Hoyong Seong, Injun Choi, Sohmyung Ha, Minkyu Je:
A Process-Scalable Ultra-Low-Voltage Sleep Timer With a Time-Domain Amplifier and a Switch-Less Resistance Multiplier. IEEE J. Solid State Circuits 58(10): 2675-2684 (2023) - [j28]Kyeongwon Jeong, Gichan Yun, Jaesuk Choi, Injun Choi, Jeehoon Son, Jae Youn Hwang, Sohmyung Ha, Minkyu Je:
A Wide-Bandwidth Ultrasound Receiver and On-Chip Ultrasound Transmitter for Ultrasound Capsule Endoscopy. IEEE J. Solid State Circuits 58(10): 2778-2789 (2023) - [j27]Muhammad Abrar Akram, Sohmyung Ha:
A Differential Rectifier With ${V}_{TH}$ Compensation for High-Frequency RF Inputs. IEEE Trans. Biomed. Circuits Syst. 17(4): 653-663 (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) - [c40]Gichan Yun, Kyeongwon Jeong, Haidam Choi, Seunghyeon Nam, Chaerin Oh, Hyunjoo Jenny Lee, Sohmyung Ha, Minkyu Je:
A 2pA/√Hz Current-Conveyor-Assisted Ultrasound Receiver with 25pF CMUT Parasitic Capacitance. A-SSCC 2023: 1-3 - [c39]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 - [c38]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 - [c37]Woojin Ahn, Kim-Hoang Nguyen, Jungwoo Lim, Kyou Sik Min, Hoseung Lee, Sohmyung Ha, Minkyu Je:
An Energy-Efficient, Scalable Neural Stimulation IC with Adaptive Dynamic Voltage Switching for Cochlear Implant System. ISCAS 2023: 1-5 - [c36]Yoontae Jung, Sein Oh, Jimin Koo, Seunga Park, Ji-Hoon Suh, Donghee Cho, Sohmyung Ha, Minkyu Je:
A 187dB FoMS 46fJ/Conv 2nd-order Highpass Δ∑ Capacitance-to-Digital Converter. VLSI Technology and Circuits 2023: 1-2 - [c35]Sein Oh, Seunga Park, Yoontae Jung, Jimin Koo, Donghee Cho, Sohmyung Ha, Minkyu Je:
A 2.5mW 12MHz-BW 69dB SNDR Passive Bandpass ΔΣ ADC with Highpass Noise-Shaping SAR Quantizers. VLSI Technology and Circuits 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) - [c34]Ahmed Elsaid, Wanjoo Park, Sohmyung Ha, Yong-Ak Song, Mohamad A. Eid:
Effects of Duration and Envelope of Vibrotactile Alerts on Urgency, Annoyance, and Acceptance. AsiaHaptics 2022: 1-10 - [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, Kim-Hoang Nguyen, 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 K. 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
[j39] [j38] [c61] [c60] [j36] [j35] [j34] [j33] [j32] [j31] [c59] [c58] [c57] [c56] [c54] [c53] [c52] [c51] [c49] [c48] [c47] [c45] [c44] [c43] [c42] [c41] [i1] [j30] [j29] [j28] [j26] [c40] [c39] [c38] [c37] [c36] [c35] [j25] [j24] [j23] [j21] [j20] [j19] [j18] [c32] [c31] [c30] [c29] [j16] [j15] [j14] [j13] [c28] [c27] [c26] [c25] [c24] [c23] [c22] [c21] [c20] [c18]
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