Ph.D., University of Michigan, 2009 - 2014
M.S., Yonsei University, 2005 - 2007
B.S., Yonsei University, 2000 - 2005
Eum, H., Makinwa, K.A.A., Lee, I., & Chae, Y. (2025). A Sub-1-V Capacitively-Biased Voltage Reference With an Auto-Zeroed Buffer and a TC of 18-ppm/°C. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 72(1), 8-12.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TCSII.2024.3454348.
Hamed, E.A., Carichner, G., Green, D.A., Kim, H.S., & Lee, I. (2025). Hybrid Timestamping Using Crystal and RC Oscillators for Shock-Resistant Precision. IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, PP(99), 1-5.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TVLSI.2025.3544410.
Ji, Y., Li, Y., & Lee, I. (2025). Low-Power Subthreshold Voltage References for High-Temperature Applications. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 72(6), 2529-2542.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TCSI.2025.3554367.
Li, Y., Caginalp, R., & Lee, I. (2025). A Picowatt CMOS Voltage Reference Using Independent TC and Output Level Calibrations. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 33(5), 1244-1254.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/tvlsi.2024.3508259.
Lee, H., Seo, D., Woo, Y.J., Lee, Y., Lee, I., & Chae, Y. (2024). A 23.9-μ W 13.6-Bit Period Modulation-Based Capacitance-to-Digital Converter With Dynamic Current Mirror Front-End. IEEE SOLID-STATE CIRCUITS LETTERS, 7, 135-138.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/LSSC.2024.3382813.
Li, Y., Vivekanand, V.S., Kubendran, R., & Lee, I. (2024). Dynamic Neural Fields Accelerator Design for a Millimeter-Scale Tracking System. IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, 32(10), 1940-1944.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TVLSI.2024.3416725.
Li, Y., Kim, Y., & Lee, I. (2023). A 5-mm2, 4.7-μW Convolutional Neural Network Layer Accelerator for Miniature Systems. IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, 31(12), 2142-2146.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TVLSI.2023.3324572.
Seo, D., Cho, M., Jeong, M., Shin, G., Lee, I., Blaauw, D., & Lee, Y. (2023). An RC Delay-Based Pressure-Sensing System With Energy-Efficient Bit-Level Oversampling Techniques for Implantable IOP Monitoring Systems. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 58(10), 2745-2756.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2023.3286796.
Lee, H., Lee, C., Lee, I., & Chae, Y. (2022). A 0.033-mm2 21.5-aF to 114.9-aF Resolution Continuous-Time ΔΣ Capacitance-to-Digital Converter Achieving Parasitic Capacitance Immunity Up to 480 pF. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 57(10), 3048-3057.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2022.3184531.
Li, Y., Wu, Y., Zhang, X., Hu, J., & Lee, I. (2022). Energy-Aware Adaptive Multi-Exit Neural Network Inference Implementation for a Millimeter-Scale Sensing System. IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, 30(7), 849-859.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TVLSI.2022.3171308.
Hamed, E.A., & Lee, I. (2021). Categorization and SEU Fault Simulations of Radiation-Hardened-by-Design Flip-Flops. ELECTRONICS, 10(13), 1572.MDPI. doi: 10.3390/electronics10131572.
Hamed, E.A., Athas, J., Zhang, X., Ashenden, N., & Lee, I. (2021). A Low-Power GPIO-Based Size Sensor to Monitor the Imbibition of Corn Seeds Beneath Soil. ELECTRONICS, 10(19), 2423.MDPI. doi: 10.3390/electronics10192423.
Li, Y., Gao, Y., Shao, M., Tonecha, J.T., Wu, Y., Hu, J., & Lee, I. (2021). Implementation of Multi-Exit Neural-Network Inferences for an Image-Based Sensing System with Energy Harvesting. JOURNAL OF LOW POWER ELECTRONICS AND APPLICATIONS, 11(3), 34.MDPI. doi: 10.3390/jlpea11030034.
Bollella, P., Lee, I., Blaauw, D., & Katz, E. (2020). A Microelectronic Sensor Device Powered by a Small Implantable Biofuel Cell. Chemphyschem, 21(1), 120-128.Wiley. doi: 10.1002/cphc.201900700.
Li, Y., Hamed, E.A., Zhang, X., Luna, D., Lin, J.S., Liang, X., & Lee, I. (2020). Feasibility of Harvesting Solar Energy for Self-Powered Environmental Wireless Sensor Nodes. ELECTRONICS, 9(12), 2058.MDPI. doi: 10.3390/electronics9122058.
Moon, E., Lee, I., Blaauw, D., & Phillips, J.D. (2019). High-Efficiency Photovoltaic Modules on a Chip for Millimeter-Scale Energy Harvesting. Prog Photovolt, 27(6), 540-546.Wiley. doi: 10.1002/pip.3132.
Peng, Y., Choo, K.D., Oh, S., Lee, I., Jang, T., Kim, Y., Lim, J., Blaauw, D., & Sylvester, D. (2019). An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Sense-and-Set Rectifier. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 54(12), 3348-3361.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2019.2945262.
Gamella, M., Lee, I., Guz, N., Blaauw, D., & Katz, E. (2018). Bioelectronic Interface between Biomolecular Logic Systems and Microelectronics. INTERNATIONAL JOURNAL OF UNCONVENTIONAL COMPUTING, 14(1), 27-41.
Choi, M., Sui, Y., Lee, I., Meredith, R., Ma, Y., Kim, G., Blaauw, D., Gianchandani, Y., & Li, T. (2017). Autonomous Microsystems for Downhole Applications: Design Challenges, Current State, and Initial Test Results. Sensors, 17(10), 2190.MDPI AG. doi: 10.3390/s17102190.
Lee, I., & Lee, Y. (2017). Circuit Design in mm-Scale Sensor Platform for Future IoT Applications. In Smart Sensors and Systems. (pp. 57-81).Springer Nature. doi: 10.1007/978-3-319-33201-7_3.
Lee, I., Bang, S., Kim, Y., Kim, G., Sylvester, D., Blaauw, D., & Lee, Y. (2017). A Wire-overhead-free Reset Propagation Scheme for Millimeter-scale Sensor Systems. JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, 17(4), 524-533.The Institute of Electronics Engineers of Korea. doi: 10.5573/JSTS.2017.17.4.524.
Lee, I., Sylvester, D., & Blaauw, D. (2017). A Subthreshold Voltage Reference With Scalable Output Voltage for Low-Power IoT Systems. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 52(5), 1443-1449.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2017.2654326.
Wu, X., Shi, Y., Jeloka, S., Yang, K., Lee, I., Lee, Y., Sylvester, D., & Blaauw, D. (2017). A 20-pW Discontinuous Switched-Capacitor Energy Harvester for Smart Sensor Applications. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 52(4), 972-984.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2016.2645741.
Lee, I., Kuo, Y.S., Pannuto, P., Kim, G., Foo, Z., Kempke, B., Jeong, S., Kim, Y., Dutta, P., Blaauw, D., & Lee, Y. (2016). MBus: A Fully Synthesizable Low-power Portable Interconnect Bus for Millimeter-scale Sensor Systems. JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, 16(6), 745-753.The Institute of Electronics Engineers of Korea. doi: 10.5573/JSTS.2016.16.6.745.
Lee, I., Lee, Y., Sylvester, D., & Blaauw, D. (2016). Battery Voltage Supervisors for Miniature IoT Systems. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 51(11), 2743-2756.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2016.2600565.
Lee, I., Sylvester, D., & Blaauw, D. (2016). A Constant Energy-Per-Cycle Ring Oscillator Over a Wide Frequency Range for Wireless Sensor Nodes. IEEE J Solid-State Circuits, 51(3), 697-711.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2016.2517133.
Teran, A.S., Moon, E., Lim, W., Kim, G., Lee, I., Blaauw, D., & Phillips, J.D. (2016). Energy Harvesting for GaAs Photovoltaics Under Low-Flux Indoor Lighting Conditions. IEEE Trans Electron Devices, 63(7), 2820-2825.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TED.2016.2569079.
Chen, Y.P., Jeon, D., Lee, Y., Kim, Y., Foo, Z., Lee, I., Langhals, N.B., Kruger, G., Oral, H., Berenfeld, O., Zhang, Z., Blaauw, D., & Sylvester, D. (2015). An Injectable 64 nW ECG Mixed-Signal SoC in 65 nm for Arrhythmia Monitoring. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 50(1), 375-390.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2014.2364036.
Jeong, S., Lee, I., Blaauw, D., & Sylvester, D. (2015). A 5.8 nW CMOS Wake-Up Timer for Ultra-Low-Power Wireless Applications. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 50(8), 1754-1763.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2015.2413133.
Lee, I., Han, G., & Chae, Y. (2015). A 2 mW, 50 dB DR, 10 MHz BW 5× Interleaved Bandpass Delta-Sigma Modulator at 50 MHz if. IEEE Transactions on Circuits and Systems I Regular Papers, 62(1), 80-89.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/tcsi.2014.2347234.
Lee, I., Kim, G., Bang, S., Wolfe, A., Bell, R., Jeong, S., Kim, Y., Kagan, J., Arias-Thode, M., Chadwick, B., Sylvester, D., Blaauw, D., & Lee, Y. (2015). System-On-Mud: Ultra-Low Power Oceanic Sensing Platform Powered by Small-Scale Benthic Microbial Fuel Cells. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 62(4), 1126-1135.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TCSI.2015.2390559.
Jeon, D., Henry, M.B., Kim, Y., Lee, I., Zhang, Z., Blaauw, D., & Sylvester, D. (2014). An Energy Efficient Full-Frame Feature Extraction Accelerator With Shift-Latch FIFO in 28 nm CMOS. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 49(5), 1271-1284.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2014.2309692.
Jeon, S.J., Oh, M., Yeo, W.S., Galvão, K.N., & Jeong, K.C. (2014). Underlying mechanism of antimicrobial activity of chitosan microparticles and implications for the treatment of infectious diseases. In Virolle, M.J. (Ed.). PLoS One, 9(3), e92723.Public Library of Science (PLoS). doi: 10.1371/journal.pone.0092723.
Lee, I.H. (2014). Power Management Circuits for Miniature Sensor Systems.
Foo, Z., Devescery, D., Ghaed, M.H., Lee, I., Madhavan, A., Park, Y.S., Rao, A.S., Renner, Z., Roberts, N.E., Schulman, A.D., Vinay, V.S., Wieckowski, M., Yoon, D., Schmidt, C., Schmid, T., Dutta, P., Chen, P.M., & Blaauw, D. (2013). A Low-Cost Audio Computer for Information Dissemination Among Illiterate People Groups. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 60(8), 2039-2050.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TCSI.2013.2264693.
Ghaed, M.H., Chen, G., Razi-ul, H., Wieckowski, M., Kim, Y., Kim, G., Lee, Y., Lee, I., Fick, D., Kim, D., Seok, M., Wise, K.D., Blaauw, D., & Sylvester, D. (2013). Circuits for a Cubic-Millimeter Energy-Autonomous Wireless Intraocular Pressure Monitor. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 60(12), 3152-3162.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TCSI.2013.2265973.
Lee, Y., Bang, S., Lee, I., Kim, Y., Kim, G., Ghaed, M.H., Pannuto, P., Dutta, P., Sylvester, D., & Blaauw, D. (2013). A Modular 1 mm3 Die-Stacked Sensing Platform With Low Power I2C Inter-Die Communication and Multi-Modal Energy Harvesting. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 48(1), 229-243.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSSC.2012.2221233.
Cheon, J., Chae, Y., Kim, D., Lim, S., Lee, I., Lee, H.K., Kim, D.J., & Han, G. (2009). Smart CMOS Image Sensor With High SBR and Subpixel Resolution for Light-Section-Based Range Finding. IEEE TRANSACTIONS ON ELECTRON DEVICES, 56(11), 2546-2555.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TED.2009.2030708.
Cheon, J., Lee, J., Lee, I., Chae, Y., Yoo, Y., & Han, G. (2009). A Single-Chip CMOS Smoke and Temperature Sensor for an Intelligent Fire Detector. IEEE SENSORS JOURNAL, 9(8), 914-921.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/JSEN.2009.2024703.
Shoouri, S., Yang, M., Carichner, G., Li, Y., Hamed, E.A., Deng, A., Green, D.A., Lee, I., Blaaw, D., & Kim, H.S. (2022). Siamese Learning-Basedmonarch Butterfly Localization. In 2022 IEEE Data Science and Learning Workshop (DSLW), 00, (pp. 1-7).Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/dslw53931.2022.9820497.
Yang, M., Hsiao, R., Carichner, G., Ernst, K., Lim, J., Green, D.A., Lee, I., Blaauw, D., & Kim, H.S. (2021). Migrating Monarch Butterfly Localization Using Multi-Modal Sensor Fusion Neural Networks. In 2020 28th European Signal Processing Conference (EUSIPCO), 00, (pp. 1792-1796).Institute of Electrical and Electronics Engineers (IEEE). doi: 10.23919/eusipco47968.2020.9287842.
Lim, J., Moon, E., Barrow, M., Nason, S.R., Patel, P.R., Patil, P.G., Oh, S., Lee, I., Kim, H.S., Sylvester, D., Blaauw, D., Chestek, C.A., Phillips, J., & Jang, T. (2020). A 0.19×0.17mm2 Wireless Neural Recording IC for Motor Prediction with Near-Infrared-Based Power and Data Telemetry. In Dig Tech Pap IEEE Int Solid State Circuits Conf, 2020, (pp. 416-418).Institute of Electrical and Electronics Engineers (IEEE).United States. doi: 10.1109/isscc19947.2020.9063005.
Kang, T., Lee, I., Oh, S., Jang, T., Kim, Y., Ahn, H., Kim, G., Shin, S.U., Jeong, S., Sylvester, D., & Blaauw, D. (2019). A 1.74.12 mm3 Fully Integrated pH Sensor for Implantable Applications using Differential Sensing and Drift-Compensation. In 2019 Symposium on VLSI Circuits, 00, (pp. c310-c311).Institute of Electrical and Electronics Engineers (IEEE).Kyoto, Japan. doi: 10.23919/vlsic.2019.8778184.
Lee, I., & Blaauw, D. (2019). A 31 pW-to-113 nW Hybrid BJT and CMOS Voltage Reference with 3.6% ±3σ-inaccuracy from 0○C to 170 ○C for Low-Power High-Temperature IoT Systems. In 2019 Symposium on VLSI Circuits, 00, (pp. c142-c143).Institute of Electrical and Electronics Engineers (IEEE).Kyoto, Japan. doi: 10.23919/vlsic.2019.8778113.
Lee, I., Moon, E., Kim, Y., Phillips, J., & Blaauw, D. (2019). A 10mm3 Light-Dose Sensing IoT2 System With 35-To-339nW 10-To-300klx Light-Dose-To-Digital Converter. In 2019 Symposium on VLSI Circuits, 00, (pp. c180-c181).Institute of Electrical and Electronics Engineers (IEEE).Kyoto, Japan. doi: 10.23919/vlsic.2019.8778007.
Lee, I., Moon, E., Kim, Y., Phillips, J., & Blaauw, D. (2019). A 10mm3Light-Dose Sensing IoT2 System with 35-to-339nW 10-to-300klx Light-Dose-to-Digital Converter. In 2019 Symposium on VLSI Technology, 00, (pp. c180-c181).Institute of Electrical and Electronics Engineers (IEEE). doi: 10.23919/vlsit.2019.8776556.
Peng, Y., Choo, D.K., Oh, S., Lee, I., Jang, T., Kim, Y., Lim, J., Blaauw, D., & Sylvester, D. (2019). 27.2 An Adiabatic Sense and Set Rectifier for Improved Maximum-Power-Point Tracking in Piezoelectric Harvesting with 541% Energy Extraction Gain. In 2019 IEEE International Solid- State Circuits Conference - (ISSCC), 00, (pp. 422-424).Institute of Electrical and Electronics Engineers (IEEE).San Francisco, CA. doi: 10.1109/isscc.2019.8662341.
Lee, I., Kim, G., Moon, E., Jeong, S., Kim, D., Phillips, J., & Blaauw, D. (2018). A 179-Lux Energy-Autonomous Fully-Encapsulated 17-mm3 Sensor Node with Initial Charge Delay Circuit for Battery Protection. In 2018 IEEE Symposium on VLSI Circuits, 00, (pp. 251-252).Institute of Electrical and Electronics Engineers (IEEE).Honolulu, HI. doi: 10.1109/vlsic.2018.8502287.
Wu, X., Lee, I., Dong, Q., Yang, K., Kim, D., Wang, J., Peng, Y., Zhang, Y., Saliganc, M., Yasuda, M., Kumeno, K., Ohno, F., Miyoshi, S., Kawaminami, M., Sylvester, D., & Blaauw, D. (2018). A 0.04MM316NW Wireless and Batteryless Sensor System with Integrated Cortex-M0+ Processor and Optical Communication for Cellular Temperature Measurement. In 2018 IEEE Symposium on VLSI Circuits, 00, (pp. 191-192).Institute of Electrical and Electronics Engineers (IEEE).Honolulu, HI. doi: 10.1109/vlsic.2018.8502391.
Cho, M., Oh, S., Jeong, S., Zhang, Y., Lee, I., Kim, Y., Chuo, L.X., Kim, D., Dong, Q., Chen, Y.P., Lim, M., Daneman, M., Blaauw, D., Sylvester, D., & Hun-SeokKim. (2017). A 6×5×4mm3 General Purpose Audio Sensor Node with a 4.7µW Audio Processing IC. In 2017 Symposium on VLSI Circuits, (pp. 312-313).Institute of Electrical and Electronics Engineers (IEEE).Kyoto, Japan. doi: 10.23919/vlsic.2017.8008521.
Dong, Q., Kim, Y., Lee, I., Choi, M., Li, Z., Wang, J., Yang, K., Chen, Y.P., Dong, J., Cho, M., Kim, G., Chang, W.K., Chen, Y.S., Chih, Y.D., Blaauw, D., & Sylvester, D. (2017). 11.2 A 1Mb Embedded Nor Flash Memory with 39µW Program Power for Mm-Scale High-Temperature Sensor Nodes. In 2017 IEEE International Solid-State Circuits Conference (ISSCC), 60, (pp. 198-200).Institute of Electrical and Electronics Engineers (IEEE).San Francisco, CA. doi: 10.1109/isscc.2017.7870329.
Dong, Q., Lee, I., Yang, K., Blaauw, D., & Sylvester, D. (2017). A 1.02nW PMOS-Only, Trim-Free Current Reference with 282ppm/°C from −40°C to 120°C and 1.6% within-Wafer Inaccuracy. In ESSCIRC 2017 - 43rd IEEE European Solid State Circuits Conference, (pp. 19-22).Institute of Electrical and Electronics Engineers (IEEE).Leuven, Belgium. doi: 10.1109/esscirc.2017.8094515.
Lee, I., Sylvester, D., & Blaauw, D. (2017). Subthreshold Voltage Reference with Nwell/Psub Diode Leakage Compensation for Low-Power High- Temperature Systems. In 2017 IEEE Asian Solid-State Circuits Conference (A-SSCC), 2017-January, (pp. 265-268).Institute of Electrical and Electronics Engineers (IEEE).Seoul, South Korea. doi: 10.1109/asscc.2017.8240267.
Jang, T., Choi, M., Shi, Y., Lee, I., Sylvester, D., & Blaauw, D. (2016). Millimeter-Scale Computing Platform for Next Generation of Internet of Things. In 2016 IEEE International Conference on RFID (RFID), (pp. 1-4).Institute of Electrical and Electronics Engineers (IEEE).Orlando, FL. doi: 10.1109/rfid.2016.7487997.
Lee, I., Lim, W., Teran, A., Phillips, J., Sylvester, D., & Blaauw, D. (2016). A >78%-Efficient Light Harvester over 100-to-100klux with Reconfigurable PV-Cell Network and MPPT Circuit. In Dig Tech Pap IEEE Int Solid State Circuits Conf, 2016, (pp. 370-371).Institute of Electrical and Electronics Engineers (IEEE).United States. doi: 10.1109/ISSCC.2016.7418061.
Lim, W., Jang, T., Lee, I., Kim, H.S., Sylvester, D., & Blaauw, D. (2016). A 380pW Dual Mode Optical Wake-up Receiver with Ambient Noise Cancellation. In Symp VLSI Circuits, 2016, (pp. 1-2).Institute of Electrical and Electronics Engineers (IEEE).United States. doi: 10.1109/VLSIC.2016.7573481.
Wu, X., Shi, Y., Jeloka, S., Yang, K., Lee, I., Sylvester, D., & Blaauw, D. (2016). A 66pW Discontinuous Switch-Capacitor Energy Harvester for Self-Sustaining Sensor Applications. In Symp VLSI Circuits, 2016, (pp. 1-2).Institute of Electrical and Electronics Engineers (IEEE).United States. doi: 10.1109/VLSIC.2016.7573490.
Bang, S., Seo, J.S., Lee, I., Jeong, S., Pinckney, N., Blaauw, D., Sylvester, D., & Chang, L. (2015). A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple. In 2010 Symposium on VLSI Circuits, 2015-August, (pp. c336-c337).Institute of Electrical and Electronics Engineers (IEEE).Kyoto, Japan. doi: 10.1109/vlsic.2015.7231313.
Lee, I., Jung, W., Ha, H., Jeong, S., Kim, Y., Kim, G., Foo, Z., Sim, J.Y., Sylvester, D., & Blaauw, D. (2015). An Ultra-Low-Power Biomedical Chip for Injectable Pressure Monitor. In 2015 IEEE Biomedical Circuits and Systems Conference (BioCAS), (pp. 1-4).Institute of Electrical and Electronics Engineers (IEEE).Atlanta, GA. doi: 10.1109/biocas.2015.7348313.
Lim, W., Lee, I., Sylvester, D., & Blaauw, D. (2015). Batteryless Sub-nW Cortex-MO+ Processor with Dynamic Leakage-Suppression Logic. In 2015 IEEE International Solid-State Circuits Conference - (ISSCC) Digest of Technical Papers, 58, (pp. 1-3).Institute of Electrical and Electronics Engineers (IEEE).IEEE. doi: 10.1109/isscc.2015.7062968.
Blaauw, D., Sylvester, D., Dutta, P., Lee, Y., Lee, I., Bang, S., Kim, Y., Kim, G., Pannuto, P., Kuo, Y.S., Yoon, D., Jung, W., Foo, Z., Chen, Y.P., Oh, S., Jeong, S., & Choi, M. (2014). IoT Design Space Challenges: Circuits and Systems. In 2014 Symposium on VLSI Technology (VLSI-Technology): Digest of Technical Papers, (pp. 1-2).Institute of Electrical and Electronics Engineers (IEEE).Honolulu, H. doi: 10.1109/vlsit.2014.6894411.
Choi, M., Lee, I., Jang, T.K., Blaauw, D., & Sylvester, D. (2014). A 23pW, 780ppm/°C Resistor-less Current Reference using Subthreshold MOSFETs. In ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC), (pp. 119-122).Institute of Electrical and Electronics Engineers (IEEE).Venice Lido, Italy. doi: 10.1109/esscirc.2014.6942036.
Jeong, S., Lee, I., Blaauw, D., & Sylvester, D. (2014). A 5.8nW, 45ppm/°C On-Chip CMOS Wake-up Timer Using a Constant Charge Subtraction Scheme. In Proc Cust Integr Circuits Conf, 2014, (pp. 1-4).Institute of Electrical and Electronics Engineers (IEEE).United States. doi: 10.1109/CICC.2014.6946008.
Kim, G., Lee, Y., Foo, Z., Pannuto, P., Kuo, Y.S., Kempke, B., Ghaed, M.H., Bang, S., Lee, I., Kim, Y., Jeong, S., Dutta, P., Sylvester, D., & Blaauw, D. (2014). A millimeter-scale wireless imaging system with continuous motion detection and energy harvesting. In 2014 Symposium on VLSI Circuits Digest of Technical Papers, (pp. 1-2).Institute of Electrical and Electronics Engineers (IEEE).Honolulu, HI. doi: 10.1109/vlsic.2014.6858425.
Kim, G., Wolfe, A., Bell, R., Bang, S., Lee, Y., Lee, I., Kim, Y., Hsu, L., Kagan, J., Arias-Thode, M., Chadwick, B., Sylvester, D., & Blaauw, D. (2014). Chip-On-Mud: Ultra-Low Power ARM-Based Oceanic Sensing System Powered by Small-Scale Benthic Microbial Fuel Cells. In 2014 IEEE International Symposium on Circuits and Systems (ISCAS), (pp. 1985-1988).Institute of Electrical and Electronics Engineers (IEEE).Melbourne VIC, Australia. doi: 10.1109/iscas.2014.6865552.
Kim, Y., Jung, W., Lee, I., Dong, Q., Henry, M., Sylvester, D., & Blaauw, D. (2014). 27.8 A Static Contention-Free Single-Phase-Clocked 24T Flip-Flop in 45nm for Low-Power Applications. In 2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 57, (pp. 466-467).Institute of Electrical and Electronics Engineers (IEEE).San Francisco, CA. doi: 10.1109/isscc.2014.6757516.
Kuo, Y.S., Pannuto, P., Kim, G., Foo, Z., Lee, I., Kempke, B., Dutta, P., Blaauw, D., & Lee, Y. (2014). MBus: A 17.5 pJ/bit/chip Portable Interconnect Bus for Millimeter-Scale Sensor Systems with 8 nW Standby Power. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, (pp. 1-4).Institute of Electrical and Electronics Engineers (IEEE).San Jose, CA. doi: 10.1109/cicc.2014.6946046.
Lee, I., Kim, Y., Bang, S., Kim, G., Ha, H., Chen, Y.P., Jeon, D., Jeong, S., Jung, W., Ghaed, M.H., Foo, Z., Lee, Y., Sim, J.Y., Sylvester, D., & Blaauw, D. (2014). Circuit Techniques for Miniaturized Biomedical Sensors. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, (pp. 1-7).Institute of Electrical and Electronics Engineers (IEEE).San Jose, CA. doi: 10.1109/cicc.2014.6946070.
Lee, I., Lee, Y., Sylvester, D., & Blaauw, D. (2014). Low power battery supervisory circuit with adaptive battery health monitor. In 2014 Symposium on VLSI Circuits Digest of Technical Papers, (pp. 1-2).Institute of Electrical and Electronics Engineers (IEEE).Honolulu, HI. doi: 10.1109/vlsic.2014.6858363.
Bang, S., Lee, Y., Lee, I., Kim, Y., Kim, G., Blaauw, D., & Sylvester, D. (2013). A fully integrated switched-capacitor based PMU with adaptive energy harvesting technique for ultra-low power sensing applications. In 2005 IEEE International Symposium on Circuits and Systems (ISCAS), (pp. 709-712).Institute of Electrical and Electronics Engineers (IEEE).International Symposium on Circuits and Systems (ISCAS). doi: 10.1109/iscas.2013.6571945.
Jeon, D., Kim, Y., Lee, I., Zhang, Z., Blaauw, D., & Sylvester, D. (2013). A 470mV 2.7mW Feature Extraction-Accelerator for Micro-Autonomous Vehicle Navigation in 28nm CMOS. In 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, 56, (pp. 166-167).Institute of Electrical and Electronics Engineers (IEEE).San Francisco, CA. doi: 10.1109/isscc.2013.6487684.
Jeon, D., Kim, Y., Lee, I., Zhang, Z., Blaauw, D., & Sylvester, D. (2013). A LOW-POWER VGA FULL-FRAME FEATURE EXTRACTION PROCESSOR. In 2013 IEEE International Conference on Acoustics, Speech and Signal Processing, (pp. 2726-2730).Institute of Electrical and Electronics Engineers (IEEE).Vancouver, BC, Canada. doi: 10.1109/icassp.2013.6638152.
Lee, I., Bang, S., Yoon, D., Choi, M., Jeong, S., Sylvester, D., & Blaauw, D. (2013). A ripple voltage sensing MPPT circuit for ultra-low power microsystems. In IEEE Symposium on VLSI Circuits, Digest of Technical Papers, (pp. C228-C229).IEEE.Kyoto, Japan.
Blaauw, D., Sylvester, D., Lee, Y., Lee, I.Y., Bang, S., Lee, I., Kim, Y., Kim, G., & Ghead, H. (2012). From digital processors to analog building blocks: Enabling new applications through ultra-low voltage design. In 2012 IEEE Subthreshold Microelectronics Conference (SubVT), (p. 1).Institute of Electrical and Electronics Engineers (IEEE).Waltham, MA. doi: 10.1109/subvt.2012.6404325.
Foo, Z., Devescery, D., Ghaed, M., Lee, I., Madhavan, A., Park, Y., Rao, A., Renner, Z., Roberts, N., Schulman, A., Vinay, V., Wieckowski, M., Yoon, D., Schmidt, C., Schmid, T., Dutta, P., Chen, P., & Blaauw, D. (2012). A Low-cost Audio Computer for Information Dissemination among Illiterate People Groups. In Proceedings of the IEEE 2012 Custom Integrated Circuits Conference, 1, (pp. 1-4).Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/cicc.2012.6330652.
Kim, G., Lee, Y., Bang, S., Lee, I., Kim, Y., Sylvester, D., & Blaauw, D. (2012). A 695 pW Standby Power Optical Wake-up Receiver for Wireless Sensor Nodes. In Proceedings of the IEEE 2012 Custom Integrated Circuits Conference, 1, (pp. 1-4).Institute of Electrical and Electronics Engineers (IEEE).San Jose, CA. doi: 10.1109/cicc.2012.6330603.
Lee, I., Bang, S., Lee, Y., Kim, Y., Kim, G., Sylvester, D., & Blaauw, D. (2012). A 635pW Battery Voltage Supervisory Circuit for Miniature Sensor Nodes. In 2012 Symposium on VLSI Circuits (VLSIC), (pp. 202-203).Institute of Electrical and Electronics Engineers (IEEE).Honolulu, HI. doi: 10.1109/vlsic.2012.6243860.
Lee, Y., Kim, G., Bang, S., Kim, Y., Lee, I., Dutta, P., Sylvester, D., & Blaauw, D. (2012). A modular 1mm3 die-stacked sensing platform with optical communication and multi-modal energy harvesting. In 2012 IEEE International Solid-State Circuits Conference, 55, (pp. 402-404).Institute of Electrical and Electronics Engineers (IEEE).San Francisco, CA. doi: 10.1109/isscc.2012.6177065.
Foo, Z., Devecsery, D., Schmid, T., Clark, N., Frank, R., Ghaed, M., Kuo, Y., Lee, I., Park, Y., Renner, Z., Slottow, N., Vinay, V., Wieckowski, M., Yoon, D., Schmidt, C., Blaauw, D., Chen, P., & Dutta, P. (2010). A case for custom silicon in enabling low-cost information technology for developing regions. In Proceedings of the First ACM Symposium on Computing for Development, (pp. 1-10).Association for Computing Machinery (ACM).ACM. doi: 10.1145/1926180.1926208.
Chae, Y., Lee, I., & Han, G. (2008). A 0.7V 36 $\mu$ W 85dB-DR Audio $\Delta\Sigma$ Modulator Using Class-C Inverter. In 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers, 51, (pp. 490-492).Institute of Electrical and Electronics Engineers (IEEE).San Francisco, CA. doi: 10.1109/isscc.2008.4523271.
Cheon, J., Lee, I., Lee, J., Chae, Y., Han, G., & Youngsin, Y. (2008). An Analog Front-End of a Fire Detection SoC for a Fire Alarm System. In 2008 IEEE Sensors, (pp. 772-775).Institute of Electrical and Electronics Engineers (IEEE).Lecce, Italy. doi: 10.1109/icsens.2008.4716555.
Lee, I., Chae, Y., & Han, G. (2007). A Low Power Dual-Mode Sigma-Delta Modulator for GSM/WCDMA Receivers. In 2007 14th IEEE International Conference on Electronics, Circuits and Systems, (pp. 1151-1154).Institute of Electrical and Electronics Engineers (IEEE).Marrakech, Morocco. doi: 10.1109/icecs.2007.4511199.
Blaauw, D.T., Sylvester, D., Choi, M., Lee, I., & Jang, T. (2017). Ultra low power temperature insensitive current source with line and load regulation.
Lee, I.H., Lee, Y., Sylvester, D.M., & Blaauw, D.T. (2016). Electronic device with supervisor circuit for detecting resistance parameter of an energy storage device.
Han, G., Chae, Y., Lee, I., Lee, D., Lim, S., & Cheon, J.M. (2014). Switched capacitor circuit.
Chae, Y., Lee, I.H., Cheon, J., Han, G., & Ham, S.H. (2012). Decimation filters, analog-to-digital converters including the same, and image sensors including the converters.
Chae, Y., Lee, I.H., Cheon, J., Han, G., & Ham, S.H. (2011). Apparatus and method for sigma-delta analog to digital conversion.
Chae, Y., Lee, I.H., Han, G., & Ham, S.H. (2010). Sigma-delta analog-to-digital converter and solid-state image pickup device.