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In Hee Lee

Assistant Professor
Research Lab Webpage Electrical and Computer Engineering

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Ph.D., University of Michigan, 2009 - 2014

M.S., Yonsei University, 2005 - 2007

B.S., Yonsei University, 2000 - 2005

Hamed, E.A., & Lee, I. (2021). Categorization and SEU Fault Simulations of Radiation-Hardened-by-Design Flip-Flops. ELECTRONICS, 10(13), 1572.MDPI AG. doi: 10.3390/electronics10131572.

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 AG. 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. PROGRESS IN PHOTOVOLTAICS, 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 International Publishing. 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 JOURNAL OF 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 TRANSACTIONS ON 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 $\times$ 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., Galvao, K.N., & Jeong, K.C. (2014). Underlying Mechanism of Antimicrobial Activity of Chitosan Microparticles and Implications for the Treatment of Infectious Diseases. 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., Haque, R.U., 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 mm(3) Die-Stacked Sensing Platform With Low Power (IC)-C-2 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.

Li, Y., Gao, Y., Shao, M., Tonecha, J.T., Wu, Y., Hu, J., & Lee, I. 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 AG. doi: 10.3390/jlpea11030034.

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), 2021-January, (pp. 1792-1796).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). 26.9 A 0.19×0.17mm2 Wireless Neural Recording IC for Motor Prediction with Near-Infrared-Based Power and Data Telemetry. In 2020 IEEE International Solid- State Circuits Conference - (ISSCC), 2020-February, (pp. 416-418).IEEE. 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, 2019-June, (pp. C310-C311).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, 2019-June, (pp. C142-C143).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, 2019-June, (pp. C180-C181).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, 2019-June, (pp. C180-C181).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), 2019-February, (pp. 422-424).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, 2018-June, (pp. 251-252).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., Saligane, 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, 2018-June, (pp. 191-192).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., & Kim, H.S. (2017). A 6×5×4mm3 general purpose audio sensor node with a 4.7μW audio processing IC. In 2017 Symposium on VLSI Circuits, (pp. C312-C313).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. 198-199).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).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).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).IEEE.Orlando, FL. doi: 10.1109/rfid.2016.7487997.

Lee, I., Lim, W., Teran, A., Phillips, J., Sylvester, D., & Blaauw, D. (2016). 21.4 A >78%-efficient light harvester over 100-to-100klux with reconfigurable PV-cell network and MPPT circuit. In 2016 IEEE International Solid-State Circuits Conference (ISSCC), 59, (pp. 370-371).IEEE.San Francisco, CA. doi: 10.1109/isscc.2016.7418061.

Wootaek Lim, Taekwang Jang, Inhee Lee, Hun-Seok Kim, Sylvester, D., & Blaauw, D. (2016). A 380pW dual mode optical wake-up receiver with ambient noise cancellation. In 2016 IEEE Symposium on VLSI Circuits (VLSI-Circuits), 2016-September, (pp. 1-2).IEEE.Honolulu, HI. doi: 10.1109/vlsic.2016.7573481.

Xiao Wu, Yao Shi, Jeloka, S., Kaiyuan Yang, Inhee Lee, Sylvester, D., & Blaauw, D. (2016). A 66pW discontinuous switch-capacitor energy harvester for self-sustaining sensor applications. In 2016 IEEE Symposium on VLSI Circuits (VLSI-Circuits), 2016-September, (pp. 1-2).IEEE.Honolulu, HI. 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 2015 Symposium on VLSI Circuits (VLSI Circuits), 2015-August, (pp. C336-C337).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).IEEE.Atlanta, GA. doi: 10.1109/biocas.2015.7348313.

Lim, W., Lee, I., Sylvester, D., & Blaauw, D. (2015). 8.2 Batteryless Sub-nW Cortex-M0+ processor with dynamic leakage-suppression logic. In 2015 IEEE International Solid-State Circuits Conference - (ISSCC) Digest of Technical Papers, 58, (pp. 1-3).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).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).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 Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, (pp. 1-4).IEEE.San Jose, CA. doi: 10.1109/cicc.2014.6946008.

Kim, G., Lee, Y., Zhiyoong Foo, Pannuto, P., Ye-Sheng Kuo, Kempke, B., Ghaed, M.H., Suyoung Bang, Inhee Lee, Yejoong Kim, Seokhyeon Jeong, 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).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).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).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).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).IEEE.San Jose, CA. doi: 10.1109/cicc.2014.6946070.

Lee, I., Yoonmyung Lee, 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).IEEE.Honolulu, HI. doi: 10.1109/vlsic.2014.6858363.

Dongsuk Jeon, Yejoong Kim, Inhee Lee, Zhengya Zhang, 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).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).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 Symposium on VLSI Circuits (VLSI-C), (pp. C228-C229).IEEE.Kyoto, Japan.

Suyoung Bang, Yoonmyung Lee, Inhee Lee, Yejoong Kim, Gyouho Kim, Blaauw, D., & Sylvester, D. (2013). A fully integrated switched-capacitor based PMU with adaptive energy harvesting technique for ultra-low power sensing applications. In 2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), (pp. 709-712).IEEE.International Symposium on Circuits and Systems (ISCAS). doi: 10.1109/iscas.2013.6571945.

Blaauw, D., Sylvester, D., Yoonmyung Lee, InHee Yoonmyung Lee, Suyoung Bang, Inhee Lee, Yejoong Kim, Gyouho Kim, & 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).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.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, (pp. 1-4).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).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).IEEE.San Francisco, CA. doi: 10.1109/isscc.2012.6177065.

Foo, Z., Renner, Z., Slottow, N., Vinay, V., Wieckowski, M., Yoon, D., Schmidt, C., Blaauw, D., Chen, P., Dutta, P., Devecsery, D., Schmid, T., Clark, N., Frank, R., Ghaed, M., Kuo, Y., Lee, I., & Park, Y. (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 - ACM DEV '10, (p. 22).ACM Press.ACM. doi: 10.1145/1926180.1926208.

Chae, Y., Lee, I., & Han, G. (2008). A 0.7V 36μW 85dB-DR Audio ΔΣ Modulator Using Class-C Inverter. In 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers, 51, (pp. 490-630).IEEE.San Francisco, CA. doi: 10.1109/isscc.2008.4523271.

Jimin Cheon, Inhee Lee, Jeonghwan Lee, Youngcheol Chae, Gunhee Han, & Youngsin Yoo. (2008). An analog front-end of a fire detection SoC for a fire alarm system. In 2008 IEEE Sensors, (pp. 772-775).IEEE.Lecce, Italy. doi: 10.1109/icsens.2008.4716555.

Inhee Lee, Youngcheol Chae, & Gunhee Han. (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).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.

Research interests

Energy Harvesting
Low-Power Integrated Circuit Design
Miniature System Design
Power/Battery Management Circuit...