Sohmyung Ha
Orcid: 0000-0003-3589-086X
According to our database1,
Sohmyung Ha
authored at least 93 papers
between 2012 and 2024.
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Bibliography
2024
A Bio-Impedance Readout IC With Complex-Domain Noise-Correlated Baseline Cancellation.
IEEE J. Solid State Circuits, November, 2024
Skew-CIM: Process-Variation-Resilient and Energy-Efficient Computation-in-Memory Design Technique With Skewed Weights.
IEEE Trans. Circuits Syst. I Regul. Pap., May, 2024
A 187-dB FoM<sub>S</sub> Power-Efficient Second-Order Highpass ΔΣ Capacitance-to-Digital Converter.
IEEE J. Solid State Circuits, April, 2024
Impedance-Readout Integrated Circuits for Electrical Impedance Spectroscopy: Methodological Review.
IEEE Trans. Biomed. Circuits Syst., February, 2024
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, February, 2024
A Wide-Dynamic-Range, DC-Coupled, Time-Based Neural-Recording IC With Optimized CCO Frequency.
IEEE Access, 2024
Optic-Fiber-Based Optogenetic Stimulator With μLED and 3D-Printed Structures for Brain Stimulation.
IEEE Access, 2024
A 5.7kfps Fast Neural Electrical Impedance Tomography IC Based on Incremental Zoom Structure with Baseline Cancellation for Peripheral Nerve Monitoring Systems.
Proceedings of the IEEE Symposium on VLSI Technology and Circuits 2024, 2024
A Fully Dynamic 1<sup>st</sup>-Order Δ-ΔΣ Modulator with a 468mV<sub>pp</sub> Input Range for Electrical Impedance Tomography Systems.
Proceedings of the IEEE Symposium on VLSI Technology and Circuits 2024, 2024
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.
Proceedings of the IEEE Symposium on VLSI Technology and Circuits 2024, 2024
An Intra-Body-Power-Transfer System Energized by an Electromagnetic Energy Harvester for Powering Wearable Sensor Nodes.
Proceedings of the IEEE Symposium on VLSI Technology and Circuits 2024, 2024
33.8 A Two-Electrode Bio-Impedance Readout IC with Complex-Domain Noise-Correlated Baseline Cancellation Supporting Sinusoidal Excitation.
Proceedings of the IEEE International Solid-State Circuits Conference, 2024
3.6 An Amplifier-Less CMOS Potentiostat IC Consuming 3.7nW Power all over 129.5dB Dynamic Range for Electrochemical Biosensing.
Proceedings of the IEEE International Solid-State Circuits Conference, 2024
An Analog-assisted Fast-transient Digital LDO with a Charge-pump-based Fine Loop Achieving 0.14-mV Output Voltage Ripples.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
A Reconfigurable Multimodal Sensor Interface IC Based on Direct-Conversion ΔΣ Modulator Structure.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
A 72-channel Resistive-sensor Interface IC with High Energy Efficiency and a Wide Input Range.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
A Tri-loop Fast-transient Digital LDO with Adaptive-gain Control and Fine-loop Freezer.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
A High-throughput Impedance Measurement IC Using Synchronous Cyclic Integration Technique.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
A Low-power Δ-ΔΣ-based Bio-impedance Readout IC with Capacitive-feedback Baseline Cancellation.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
Proceedings of the IEEE International Symposium on Circuits and Systems, 2024
2023
A Process-Scalable Ultra-Low-Voltage Sleep Timer With a Time-Domain Amplifier and a Switch-Less Resistance Multiplier.
IEEE J. Solid State Circuits, October, 2023
A Wide-Bandwidth Ultrasound Receiver and On-Chip Ultrasound Transmitter for Ultrasound Capsule Endoscopy.
IEEE J. Solid State Circuits, October, 2023
IEEE Trans. Biomed. Circuits Syst., August, 2023
A High-Efficiency Single-Mode Dual-Path Buck-Boost Converter With Reduced Inductor Current.
IEEE J. Solid State Circuits, March, 2023
Optimal Parameter Design of DAC-Based Sinusoidal Signal Generators for Electrical Impedance Spectroscopy.
IEEE Trans. Instrum. Meas., 2023
A 2.5mW 12MHz-BW 69dB SNDR Passive Bandpass ΔΣ ADC with Highpass Noise-Shaping SAR Quantizers.
Proceedings of the 2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits), 2023
A 187dB FoMS 46fJ/Conv 2<sup>nd</sup>-order Highpass Δ∑ Capacitance-to-Digital Converter.
Proceedings of the 2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits), 2023
An Energy-Efficient, Scalable Neural Stimulation IC with Adaptive Dynamic Voltage Switching for Cochlear Implant System.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2023
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.
Proceedings of the IEEE Custom Integrated Circuits Conference, 2023
A 333TOPS/W Logic-Compatible Multi-Level Embedded Flash Compute-In-Memory Macro with Dual-Slope Computation.
Proceedings of the IEEE Custom Integrated Circuits Conference, 2023
A 2pA/√Hz Current-Conveyor-Assisted Ultrasound Receiver with 25pF CMUT Parasitic Capacitance.
Proceedings of the IEEE Asian Solid-State Circuits Conference, 2023
2022
Dynamic-Range-Enhancement Techniques for Artifact-Tolerant Biopotential-Acquisition ICs.
IEEE Trans. Circuits Syst. II Express Briefs, 2022
On-Chip Sinusoidal Signal Generators for Electrical Impedance Spectroscopy: Methodological Review.
IEEE Trans. Biomed. Circuits Syst., 2022
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., 2022
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., 2022
Wireless Kitchen Fire Prevention System Using Electrochemical Carbon Dioxide Gas Sensor for Smart Home.
Sensors, 2022
An Impedance Readout IC with Ratio-Based Measurement Techniques for Electrical Impedance Spectroscopy.
Sensors, 2022
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, 2022
An SRAM-Based Hybrid Computation-in-Memory Macro Using Current-Reused Differential CCO.
IEEE J. Emerg. Sel. Topics Circuits Syst., 2022
A 600mVPP-Input-Range 94.5dB-SNDR NS-SAR-Nested DSM with 4<sup>th</sup>-Order Truncation-Error Shaping and Input-Impedance Boosting for Biosignal Acquisition.
Proceedings of the IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits 2022), 2022
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.
Proceedings of the IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits 2022), 2022
A 133.6TOPS/W Compute-In-Memory SRAM Macro with Fully Parallel One-Step Multi-Bit Computation.
Proceedings of the IEEE Custom Integrated Circuits Conference, 2022
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.
Proceedings of the IEEE Custom Integrated Circuits Conference, 2022
A 433.92-MHz CMOS Rectifier with Dynamic VTH-reduction for Wireless Biomedical Implants.
Proceedings of the IEEE Biomedical Circuits and Systems Conference, 2022
Effects of Duration and Envelope of Vibrotactile Alerts on Urgency, Annoyance, and Acceptance.
Proceedings of the Haptic Interaction - 5th International Conference, 2022
2021
IEEE Trans. Circuits Syst. II Express Briefs, 2021
IEEE Trans. Circuits Syst. II Express Briefs, 2021
A Wireless Power and Data Transfer IC for Neural Prostheses Using a Single Inductive Link With Frequency-Splitting Characteristic.
IEEE Trans. Biomed. Circuits Syst., 2021
A Polar-Demodulation-Based Impedance-Measurement IC Using Frequency-Shift Technique With Low Power Consumption and Wide Frequency Range.
IEEE Trans. Biomed. Circuits Syst., 2021
A Precise Lesion Localization System Using a Magnetometer With Real-Time Baseline Cancellation for Laparoscopic Surgery.
IEEE Access, 2021
Power Delivery Networks for Embedded Mobile SoCs: Architectural Advancements and Design Challenges.
IEEE Access, 2021
A 96.6%-Efficiency Continuous-Input-Current Hybrid Dual-Path Buck-Boost Converter with Single-Mode Operation and Non-Stopping Output Current Delivery.
Proceedings of the 2021 Symposium on VLSI Circuits, Kyoto, Japan, June 13-19, 2021, 2021
An 8MHz 31.25kS/s Impedance-Monitoring IC Based on IF-Sampling Architecture with a Band-Pass Delta-Sigma ADC.
Proceedings of the 2021 Symposium on VLSI Circuits, Kyoto, Japan, June 13-19, 2021, 2021
Proceedings of the 2021 Symposium on VLSI Circuits, Kyoto, Japan, June 13-19, 2021, 2021
A Frequency-Splitting-Based Wireless Power and Data Transfer IC for Neural Prostheses with Simultaneous 115mWPower and 2.5Mb/s Forward Data Delivery.
Proceedings of the IEEE International Solid-State Circuits Conference, 2021
34.4 An Energy-Replenishing Ultrasound Pulser with 0.25CV<sup>2</sup> f Dynamic Power Consumption.
Proceedings of the IEEE International Solid-State Circuits Conference, 2021
A Power-Efficient, Wide-Frequency-Range Impedance Measurement IC Using Frequency-Shift Technique.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2021
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.
Proceedings of the 47th ESSCIRC 2021, 2021
A Scalable Readout IC Based on Wideband Noise Cancelling for Full-Rate Scanning of High-Density Microelectrode Arrays.
Proceedings of the 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society, 2021
A 99.5dB-DR 5kHz-BW Closed-Loop Neural-Recording IC based on Continuous-Time Dynamic-Zoom ΔΣ ADC with Automatic AFE-Gain Control.
Proceedings of the IEEE Asian Solid-State Circuits Conference, 2021
2020
Challenges in Scaling Down of Free-Floating Implantable Neural Interfaces to Millimeter Scale.
IEEE Access, 2020
A 0.0046mm<sup>2</sup> 6.7μW Three-Stage Amplifier Capable of Driving 0.5-to-1.9nF Capacitive Load with >0.68MHz GBW without Compensation Zero.
Proceedings of the IEEE Symposium on VLSI Circuits, 2020
A 4.2-pJ/Conv 10-b Asynchronous ADC with Hybrid Two-Tier Level-Crossing Event Coding.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2020
2019
A Harmonic Error Cancellation Method for Accurate Clock-Based Electrochemical Impedance Spectroscopy.
IEEE Trans. Biomed. Circuits Syst., 2019
A 3 mm × 3 mm Fully Integrated Wireless Power Receiver and Neural Interface System-on-Chip.
IEEE Trans. Biomed. Circuits Syst., 2019
IEEE Trans. Biomed. Circuits Syst., 2019
Proceedings of the 2019 IEEE Biomedical Circuits and Systems Conference, 2019
2018
A 500-MHz Bandwidth 7.5-mV<sub>pp</sub> Ripple Power-Amplifier Supply Modulator for RF Polar Transmitters.
IEEE J. Solid State Circuits, 2018
Harmonic Error Cancellation for Accurate Square-wave-based Bio-Impedance Measurements.
Proceedings of the 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2018
Proceedings of the 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2018
2017
A 144-MHz Fully Integrated Resonant Regulating Rectifier With Hybrid Pulse Modulation for mm-Sized Implants.
IEEE J. Solid State Circuits, 2017
21.7 2pJ/MAC 14b 8×8 linear transform mixed-signal spatial filter in 65nm CMOS with 84dB interference suppression.
Proceedings of the 2017 IEEE International Solid-State Circuits Conference, 2017
Proceedings of the 2017 IEEE Custom Integrated Circuits Conference, 2017
From algorithms to devices: Enabling machine learning through ultra-low-power VLSI mixed-signal array processing.
Proceedings of the 2017 IEEE Custom Integrated Circuits Conference, 2017
Proceedings of the IEEE Biomedical Circuits and Systems Conference, 2017
2016
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, 2016
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, 2016
A fully integrated 144 MHz wireless-power-receiver-on-chip with an adaptive buck-boost regulating rectifier and low-loss H-Tree signal distribution.
Proceedings of the 2016 IEEE Symposium on VLSI Circuits, 2016
2015
A CMOS 4-channel MIMO baseband receiver with 65dB harmonic rejection over 48MHz and 50dB spatial signal separation over 3MHz at 1.3mW.
Proceedings of the Symposium on VLSI Circuits, 2015
Proceedings of the Symposium on VLSI Circuits, 2015
A 16-channel wireless neural interfacing SoC with RF-powered energy-replenishing adiabatic stimulation.
Proceedings of the Symposium on VLSI Circuits, 2015
2014
Integrated Circuits and Electrode Interfaces for Noninvasive Physiological Monitoring.
IEEE Trans. Biomed. Eng., 2014
Energy-recycling integrated 6.78-Mbps data 6.3-mW power telemetry over a single 13.56-MHz inductive link.
Proceedings of the Symposium on VLSI Circuits, 2014
A 7.86 mW +12.5 dBm in-band IIP3 8-to-320 MHz capacitive harmonic rejection mixer in 65nm CMOS.
Proceedings of the ESSCIRC 2014, 2014
A 65k-neuron 73-Mevents/s 22-pJ/event asynchronous micro-pipelined integrate-and-fire array transceiver.
Proceedings of the IEEE Biomedical Circuits and Systems Conference, 2014
A 12.6 mW 8.3 Mevents/s contrast detection 128×128 imager with 75 dB intra-scene DR asynchronous random-access digital readout.
Proceedings of the IEEE Biomedical Circuits and Systems Conference, 2014
2013
85 dB dynamic range 1.2 mW 156 kS/s biopotential recording IC for high-density ECoG flexible active electrode array.
Proceedings of the ESSCIRC 2013, 2013
2012
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2012