The Nifty Chips Laboratory at Hanyang University is working on cool circuits and their automatic generators.
(accepted) S. Kim, T. Lee, K. Cho, and J. Han, “A Flying-Capacitor-Assisted Single-Mode Buck-Boost Converter for Battery-Powered Applications,” IEEE Trans. Very Large Scale Integr. (VLSI) Syst., 2025.
E. Song, J. Yang, Y. Oh, S. Hong, D. Lee, S. Lee, and J. Han, “100–112-Gb/s 1.6-Vppd PAM-8 Transmitters With High-Swing 3 + 1 Hybrid FFE Taps in 40-nm Technology,” IEEE J. Solid-State Circuits, vol. 60, no. 2, pp. 543-554, Feb. 2025.
S. Lee, H. Seo, W. Shin, D. Yang, G. Sung, S. Lee, D. Choi, Y. Kwak, S. Won, I. Song, and J. Han, “A Variation-Robust 20-Gb/s Wireline Transceiver With Real-Time Calibration in 28-nm CMOS,” IEEE Trans. Circuits Syst. I: Regular Papers, Dec. 2024.
S. Lee, H. Seo, S. Son, S. Yeom, and J. Han, “A 102-Gb/s/lane 1.4-Vppd Linear Range PAM-8 Receiver Frontend With Multi-Path Continuous-Time Linear Equalization in 28-nm CMOS,” IEEE Trans. Circuits Syst. II: Express Briefs, vol. 71, no. 11, pp. 4623-4627, Nov. 2024.
[삼성전자 우수논문상] H. Kim, Y. Jo, S. Lee, E. Lee, Y. Choi, J. Park, M. Kwak, J. Choi, Y. Choi, and J. Han, “A 32-Gb/s Single-Ended PAM-4 Transceiver With Asymmetric Termination and Equalization Techniques for Next-Generation Memory Interfaces,” IEEE Trans. Circuits Syst. I: Regular Papers, vol. 71, no. 11, pp. 4912-4923, Nov. 2024.
T. Kim, G. Kim, M.-K. Cho, J. D. Cressler, J. Han, and I. Song, “Investigation of Device- and Circuit-Level Reliability of Inverse-Mode Silicon-Germanium Heterojunction Bipolar Transistors,” MDPI Sensors, Nov. 2024.
G. Park, S. Yeom, I.-W. Jang, D. Lee, Jaeduk Han, and Min-Seong Choo, “3.2-GHz Digital Phase-Locked Loop With Autocorrelation-Based Direct Jitter Correction,” IEEE Trans. Circuits Syst. II: Express Briefs, vol. 71, no. 9, pp. 4091-4095, Sep. 2024.
E. Lee, S. Lee, C. Pyo, H. Kim, and J. Han, “A 2-GS/s 6-bit Single-Channel Speculative Loop-Unrolled SAR ADC with Low-Overhead Comparator Offset Calibration in 28-nm CMOS,” J. Semicond. Technol. Sci., Aug. 2024.
G. You, Y. Byun, S. Lim, and J. Han, “Interactive and Automatic Generation of Primitive Custom Circuit Layout Using LLMs,” arXiv, Aug. 2024.
S. Hong, Y. Tae, D. Lee, G. Park, J. Lim, K. Cho, C. Jeong, M.-J. Park, and J. Han, “Analog Circuit Design Automation via Sequential RL Agents and gm/ID Methodology,” IEEE Access, vol. 12, pp. 104473-104489, Aug. 2024.
S. Lee, J. Lim, and J. Han, “A PSRR-Enhanced Fast-Response Inverter-Based LDO for Mobile Devices,” IEEE Trans. Circuits Syst. II: Express Briefs, Vol. 71, No. 6, pp. 3226-3230, Jun. 2024.
Y. Oh, H. Im, J. Yang, E. Song, D. Lee, S. Lee, T. Shin, and J. Han, “A 100-Gb/s PAM-8 Transmitter With 3-Tap FFE and High-Swing Hybrid Driver in 40-nm CMOS Technology,” IEEE Trans. Circuits Syst. II: Express Briefs, Vol. 71, No. 6, pp. 2936-2940, Jun. 2024.
W. Shin, H. Seo, S. Lee, D.-H. Choi, Y.-H. Kwak, S.-J. Won, and J. Han, “A Variation-Tolerant Voltage-Mode Transmitter With 3+1 Tap FFE in 28-nm CMOS,” IEEE Trans. Circuits Syst. II: Express Briefs, Vol. 71, No. 4, pp. 1819 - 1823, Apr. 2024.
T. Sim, S. Yeom, H. Im, Y. Oh, H. Seo, H. Ko, H. Chi, H. Jung, and J. Han, “A 28-Gb/s Single-Ended PAM-4 Receiver With T-Coil-Integrated Continuous-Time Linear Equalizer in 40-nm CMOS Technology,” IEEE Trans. Circuits Syst. II: Express Briefs, Vol. 71, No. 3, pp. 1012-1016, Mar. 2024.
E. Song, J. Han, H. Seo, H. Kim, H. Im, and J. Han, “A 35-Gb/s PAM-4 Transmitter with 7B4Q Full-Transition Avoidance and Area-Efficient Gm-Boosting Technique,” IEEE Trans. Circuits Syst. II: Express Briefs, Vol. 71, No. 1, pp. 46-50, Jan. 2024.
T. Shin, D. Lee, D. Kim, G. Sung, W. Shin, Y. Jo, H. Park, and J. Han, “LAYGO2: A Custom Layout Generation Engine Based on Dynamic Templates and Grids for Advanced CMOS Technologies,” IEEE Trans. Comput.-Aided Des. Integr., Vol. 42, No. 10, pp. 4402-4412, Dec. 2023.
K. Kim, S. Moon, J. Han, E. Alon, and A. M. Niknejad, “Precursor ISI Cancellation Sliding-Block DFE for High-Speed Wireline Receivers,” IEEE Trans. Circuits Syst. I: Regular Papers, Vol. 70, No. 10, pp. 4169-4182, Aug. 2023.
H. Kim, H. Seo, H. Kim, C. Yoo, and J. Han, “A 16-Gb/s/wire 4-Wire Short-Haul Transceiver with Balanced Single-Ended Signaling (BASES) in 28-nm CMOS,” IEEE Trans. Circuits Syst. II: Express Briefs, Aug. 2023.
G. Park, D. Lee, J. Han, and W. Bae, “A High-Frequency and Low-Jitter DLL with Quadrature Error and Duty Cycle Corrections Based on Asynchronous Sampling,” IEEE Solid-State Circuits Letters, Feb. 2023.
H. Kim, H. Seo, Y. Jo, C. Yoo, and J. Han, “An 8b9b 77.44-Gb/s Noise-Immune Spatial-Delta Coded Transceiver for Short-Reach Memory Interfaces in 28-nm CMOS,” IEEE Trans. Circuits Syst. II: Express Briefs, Mar. 2023.
H. Seo, J. Han, K. Kim, B. Lim, E. Shin, Y. Choi, H. Ko, J. Choi, S. Lee, C. Yoo, and J. Han, “A 12-Gb/s Baud-rate Clock and Data Recovery with 75% Phase-detection Probability by Precoding and Integration-Hold-Reset Frontend,” IEEE Trans. Circuits Syst. II: Express Briefs, Feb. 2023.
D. Lee, G. Park, J. Han, and M.-S. Choo, “An Automated Design Methodology for Ring Voltage-Controlled Oscillators in Nanometer CMOS Technologies,” IEEE Access, Vol. 11, pp. 7530-7539, Jan. 2023.
E. Song, S. Park, and J. Han, “Transition-Limited Pulse-Amplitude Modulation Technique for High-Speed Wireline Communication Systems,” ETRI J., Nov. 2022.
E. Lee, and J. Han, “Time-domain Continuous-time Delta-sigma Modulator using VCO-based Integrator and GRO-based Quantizer,” J. Semicond. Technol. Sci., Aug. 2022.
E. Lee, C. Pyo, S. Lee, and J. Han, “A 1.5-GS/s 6-bit Single-Channel Loop-Unrolled SAR ADC With Speculative CDAC Switching Control Technique in 28-nm CMOS,” IEEE Trans. Circuits Syst. I: Regular Papers, Jun. 2022.
T. No, S. Choi, G. Sung, S.-B. Kim, J. Han, and Y.-H. Song, “A Discharge-Path-Based Sensing Circuit with OTS Snapback Current Protection for Phase Change Memories,” IEEE Access, vol. 10, pp. 53513-53521, May 2022.
G. Park, J. Han, and W. Bae, “Design and Analysis of Asynchronous Sampling Duty Cycle Corrector,” MDPI Electronics, Oct. 2021.
Z. Wang, M. Choi, K. Lee, K. Park, Z. Liu, A. Biswas, J. Han, S. Du, and E. Alon, “An Output Bandwidth Optimized 200 Gb/s PAM-4 100 Gb/s NRZ Transmitter with 5-Tap FFE in 28nm CMOS,” IEEE J. Solid-State Circuits, Special Issue on the 2021 International Solid State Circuits Conference (ISSCC 2021), Vol. 57, No. 1, pp. 21-31, Sep. 2021.
J. Han, W. Bae, E. Y. Chang, Z. Wang, B. Nikolić, and E. Alon, “LAYGO: A Template-and-Grid-Based Layout Generation Engine for Advanced CMOS Technologies,” IEEE Trans. Circuits Syst. I: Regular Papers, vol. 68, no. 3, pp. 1012–1022, Mar. 2021.
(accepted) Y. Jang, S. Yun, J. Yang, T. Shin, E. Song, and J. Han, “A 56-Gb/s 0.39-pJ/bit PAM-4 Transmitter Frontend with Shunt-FFE Tail-Less Driver and External Bias-Tees,” in IEEE Int. Symp. Circuits Syst. (ISCAS 2025), May 2025.
(accepted) B. Lim, H. Jo, H. Jeong, J. Yang, and J. Han, “A 96-Gb/s PAM-8 Transmitter with Transition-Boosted Current-Mode Logic Driver in 40-nm CMOS for Wireline Communication,” in IEEE Int. Symp. Circuits Syst. (ISCAS 2025), May 2025.
(accepted) Y. Jo, H. Kim, Y. Choi, J. Park, M. Kwak, and J. Han, “A 32-50Gb/s/pin Single-Ended PAM-4 Transmitter with ZQ-Based FFE and PAM-4 LSB DBI-DC Encoding,” in IEEE Int. Solid-State Circuits Conf. (ISSCC 2025), Feb. 2025.
Y. Jo, T. Kang, J. Yang, and J. Han, “A 500-MS/s 8-bit SAR ADC Generated from an Automated Layout Generation Framework in 14-nm FinFET Technology,” in Proceedings of Asia South Pacific Des. Autom. Conf. (ASPDAC 2025), Jan. 2025.
J. Park, M. Kim, and J. Han, “pyngspice: A High-performance Python Binding for Ngspice”, in Workshop on Open-Source EDA Technology (WOSET), Nov. 2024.
S. Lee, H. Seo, S. Son, S. Yeom, and J. Han, “A 102-Gb/s/lane 1.4-Vppd Linear Range PAM-8 Receiver Frontend With Multi-Path Continuous-Time Linear Equalization in 28-nm CMOS,” in IEEE Int. Symp. Integr. Circuits Syst. (ISICAS 2024), Oct. 2024.
H. Kim, Y. Jo, S. Lee, E. Lee, Y. Choi, J. Park, M. Kwak, J. Choi, Y. Choi, and J. Han, “A 32-Gb/s Single-Ended PAM-4 Transceiver With Asymmetric Termination and Equalization Techniques for Next-Generation Memory Interfaces,” in IEEE Int. Symp. Integr. Circuits Syst. (ISICAS 2024), Oct. 2024.
G. You, Y. Byun, S. Lim, and J Han, “Interactive and Automatic Generation of Primitive Custom Circuit Layout Using LLMs”, in 6th ACM/IEEE International Symposium on Machine Learning for CAD (MLCAD), Work-In-Progress Presentation, Sep. 2024.
J. Nam, J. Han, and H. Kim, “Low-Power Encoding for PAM-3 DRAM Bus,” in Int. Conf. Synth., Model., Anal. Simul. Methods, Appl. Circuit Des. (SMACD 204), Jul. 2024.
Z. Wang, M. Choi, P. Kwon, K. Lee, B. Yin, Z. Liu, K. Park, A. Biswas, J. Han, S. Du, E. Alon, “A 24.6-29.6GHz Hybrid Sub-Sampling PLL with Tri-State Integral Path Achieving 44fs Jitter and -254.8dB FOM in 28nm CMOS,” in IEEE Int. Symp. Circuits and Syst. (ISCAS 2024), May. 2024.
J. Yang, E. Song, S. Hong, D. Lee, S. Lee, H. Im, T. Shin, and J. Han, “A 100Gb/s 1.6Vppd PAM-8 Transmitter with High-Swing 3+1 Hybrid FFE Taps in 40nm,” in IEEE Int. Solid-State Circuits Conf. (ISSCC 2023), Feb. 2023.
Y. Su, S. Lee, E. Song, D. Kim, J. Han, and H. Kim, “Energy-Efficient Bus Encoding Techniques for Next-Generation PAM-4 DRAM Interfaces,” in Proceedings of the 40th IEEE Int. Conf. Comput. Des. (ICCD 2022), Oct. 2022.
E. Song, J. Yang, S. Hong, and J. Han, “A 32-Gb/S High-Swing PAM-4 Current-Mode Driver with Current-Bleeding Cascode Technique and Capacitive-Coupled Pre-Drivers in 40-nm CMOS for Short-Reach Wireline Communication,” in IEEE Int. Midwest Symp. on Circuits and Syst., Aug. 2022.
Z. Wang, M. Choi, P. Kwon, K. Lee, B. Yin, Z. Liu, K. Park, A. Biswas, J. Han, S. Du, E. Alon, “A 200Gb/s PAM-4 Transmitter with Hybrid Sub-Sampling PLL in 28nm CMOS Technology,” in IEEE Int. Symp. VLSI Circuits, Jun. 2022.
Z. Wang, M. Choi, J. Wright, K. Lee, Z. Liu, B. Yin, J. Han, S. Du, E. Alon, “A Ring-Oscillator Sub-Sampling PLL with Hybrid Loop Using Generator-Based Design Flow,” in IEEE Int. Symp. Circuits and Syst., May. 2022.
Taeho Shin and Jaeduk Han, “A SCAN Chain Generator for Verification of Full-Custom Integrated Circuits,” in IEEE 18th Int. SoC Design Conf., Oct. 2021.
Dongjun Lee and Jaeduk Han, “Design Techniques for Area-efficient Two-Stacked Current Sources in Nanometer CMOS Technology,” in IEEE 18th Int. SoC Design Conf., Oct. 2021.
Gaeryun Sung and Jaeduk Han, “High-speed StrongARM-latch-based Bang-bang Phase Detector in 40-nm CMOS Technology,” in IEEE 18th Int. SoC Design Conf., Oct. 2021.
M. Choi, Z. Wang, K. Lee, K. Park, Z. Liu, A. Biswas, J. Han, and E. Alon, “An output bandwidth optimized 200Gb/s PAM-4 / 100Gb/s NRZ transmitter with 5-Tap FFE in 28nm CMOS,” in IEEE Int. Solid-State Circuits Conf., Feb. 2021.
Y. Yoon, D. Han, S. Chu, S. Lee, J. Han and J. Chun, “Process-Portable and Programmable Layout Generation of Digital Circuits in Advanced DRAM Technologies,” in Proc. Design, Autom. Test Eur. Conf., Feb. 2021.
Taeung No and Jaeduk Han, “Design Techniques for Robust and Area-efficient Current Sources in Nanometer CMOS Technology,” in IEEE 17th Int. SoC Design Conf., Oct. 2020.