Publications – Conference Proceedings

  1. I. Lee, D. Sylvester, and D. Blaauw, “Subthreshold Voltage Reference With Nwell/Psub Diode Leakage Compensation for Low-Power High-Temperature Systems,” IEEE Asian Solid-State Circuits Conference (ASSCC), Nov. 2017.
  2. Q. Dong, I. Lee, K. Yang, D. Blaauw, and D. Sylvester, “A 1.02nW PMOS-only, Trim-Free Current Reference with 282ppm/oC from -40oC to 120oC and 1.6% within-Wafer Inaccuracy,” IEEE European Solid-State Circuits Conference (ESSCIRC), Sep. 2017.
  3. M. Cho, S. Oh, S. Jeong, Y. Zhang, I. Lee, Y. Kim, L.-X. Chuo, D. Kim, Q. Dong, Y.-P. Chen, M. Lim, M. Daneman, D. Blaauw, D. Sylvester, and H.-S. Kim, “A 6×5×4mm3 general purpose audio sensor node with a 4.7μW audio processing IC,” IEEE Symposium on VLSI Circuits (SOVC), June, 2017.
  4. Q. Dong, Y. Kim, I. Lee, M. Choi, Z. Li, J. Wang, K. Yang, Y-P. Chen, J. Dong, M. Cho, G. Kim, W-K. Chang, Y-S. Chen, Y-D. Chih, D. Blaauw, and D. Sylvester, “A 1Mb Embedded NOR Flash Memory with 39μW Program Power for mm-Scale High-Temperature Sensor Nodes,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2017.
  5. X. Wu, Y. Shi, S. Jeloka, K. Yang, I. Lee, D. Sylvester, and D. Blaauw, “A 66pW discontinuous switch-capacitor energy harvester for self-sustaining sensor applications,” IEEE Symposium on VLSI Circuits (SOVC), June, 2016.
  6. W. Lim, T. Jang, I. Lee, H.-S. Kim, D. Sylvester, and D. Blaauw, “A 380pW dual mode optical wake-up receiver with ambient noise cancellation,” IEEE Symposium on VLSI Circuits (SOVC), June, 2016.
  7. T. Jang, M. Choi, Y. Shi, I. Lee, D. Sylvester, and D. Blaauw, “Millimeter-scale computing platform for next generation of Internet of Things,” IEEE Int. Conf. RFID, May. 2016.
  8. I. Lee, W. Lim, A. Teran, J. Phillips, D. Sylvester, and D. Blaauw, “A >78%-Efficient Light harvester over 100-to-100klux with Reconfigurable PV-Cell Network and MPPT Circuit,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2016, pp. 370-371.
  9. I. Lee, W. Jung, H. Ha, S. Jeong, Y. Kim, G. Kim, Z. Foo, J.-Y. Sim, D. Sylvester, and D. Blaauw, “An Ultra-Low-Power Biomedical Chip for Injectable Pressure Monitor,” IEEE Biomedical Circuits and Systems Conference (BIOCAS) (Invited), Oct. 2015.
  10. S. Bang, J.-S. Seo, I. Lee, S. Jeong, N. Pinckney, D. Blaauw, D. Sylvester, and L. Chang, “A Fully-Integrated 40-Phase Flying-Capacitance-Dithered Switched-Capacitor Voltage Regulator with 6mV Output Ripple,” IEEE Symposium on VLSI Circuits (SOVC), June, 2015.
  11. W. Lim, I. Lee, D. Sylvester, and D. Blaauw, “Batteryless Sub-nW Cortex-M0+ Processor with Dynamic Leakage-Suppression Logic,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2015.
  12. M. Choi, I. Lee, T.-K. Jang, D. Blaauw, and D. Sylvester, “A 23pW 780ppm/°C Resistor-Less Current Reference Using Subthreshold MOSFETs,” IEEE European Solid-State Circuits Conference (ESSCIRC), Sep. 2014.
  13. Y-S. Kuo, P. Pannuto, G. Kim, Z. Foo, I. Lee, B. Kempke, P. Dutta, D. Blaauw, and Y. Lee, “MBus: A 17.5 pJ/bit/chip Portable Interconnect Bus for Millimeter-Scale Sensor Systems with 8 nW Standby Power,” IEEE Custom Integrated Circuits Conference (CICC), Sep. 2014.
  14. S. Jeong, I. Lee, D. Blaauw, and D. Sylvester, “A 5.8nW, 45ppm/°C On-Chip CMOS Wake-up Timer Using a Constant Charge Subtraction Scheme” IEEE Custom Integrated Circuits Conference (CICC), Sep. 2014.
  15. I. Lee, Y. Kim, S. Bang, G. Kim, H. Ha, Y.-P. Chen, D. Jeon, S. Jeong, W. Jung, M. Ghaed, Z. Foo, Y. Lee, J.-Y. Sim, D. Sylvester, and D. Blaauw, “Circuit Techniques for Miniaturized Biomedical Sensors,” IEEE Custom Integrated Circuits Conference (CICC), Sep. 2014 (Invited).
  16. I. Lee, Y. Lee, D. Sylvester, and D. Blaauw, “Low Power Battery Supervisory Circuit with Adaptive Battery Health Monitor,” IEEE Symposium on VLSI Circuits (SOVC), June, 2014, pp. C17-C18 (Selected as Symposium Technical Highlight).
  17. D. Blaauw, D. Sylvester, P. Dutta, Y. Lee, I. Lee, S. Bang, Y. Kim, G. Kim, P. Pannuto, Y.-S Kuo, D. Yoon, W. Jung, Z. Foo, Y.-P. Chen, S. Oh, S. Jeong, M. Choi, “IoT Design Space Challenges: Circuits and Systems,” IEEE Symposium on VLSI Technology (SOVT), June, 2014 (Invited).
  18. G. Kim, Y. Lee, Z. Foo, P. Pannuto, Y.-S. Kuo, B. Kempke, M. Ghaed, S. Bang, I. Lee, Y. Kim, S. Jeong, P. Dutta, D. Sylvester, and D. Blaauw, “A Millimeter-Scale Wireless Imaging System with Continuous Motion Detection and Energy Harvesting,” IEEE Symposium on VLSI Circuits (SOVC), June, 2014, pp. C141-C142.
  19. G. Kim, A. Wolfe, R. Bell, S. Bang, Y. Lee, I. Lee, Y. Kim, L. Hsu, J. Kagan, M. Arias-Thode, B. Chadwick, D. Sylvester, and D. Blaauw, “Chip-On-Mud: Ultra-Low Power ARM-Based Oceanic Sensing System Powered by Small-Scale Benthic Microbial Fuel Cells,” IEEE International Symposium on Circuits and Systems (ISCAS), May 2014.
  20. Y. Kim, W. Jung, I. Lee, Q. Dong, M. Henry, M, D. Sylvester, and D. Blaauw, “27.8 A static contention-free single-phase-clocked 24T flip-flop in 45nm for low-power applications,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2014, pp. 466-467.
  21. I. Lee, S. Bang, D. Yoon, M. Choi, S. Jeong, D. Sylvester, and D. Blaauw, “A Ripple Voltage Sensing MPPT Circuit for Ultra-Low Power Microsystems,” IEEE Symposium on VLSI Circuits (SOVC), June, 2013, pp. C228-C229.
  22. S. Bang, Y. Lee, I. Lee, Y. Kim, G. Kim, D. Blaauw, and D. Sylvester, “A fully integrated switched-capacitor based PMU with adaptive energy harvesting technique for ultra-low power sensing applications,” IEEE International Symposium on Circuits and Systems (ISCAS), May 2013, pp.709-712.
  23. D. Jeon, Y. Kim, I. Lee, Z. Zhang, D. Blaauw, and D. Sylvester, “A 470mV 2.7mW Feature Extraction-Accelerator for Micro-Autonomous Vehicle Navigation in 28nm CMOS,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2013, pp.166-167.
  24. Z. Foo, D. Devescery, M. Ghaed, I. Lee, A. Madhavan, Y. Park, A. Rao, Z. Renner, N. Roberts, A. Schulman, V. Vinay, M. Wieckowski, D. Yoon, C. Schmidt, T. Schmid, P. Dutta, P. Chen, and D. Blaauw, “A Low-Cost Audio Computer for Information Dissemination among Illiterate People Groups,” IEEE Custom Integrated Circuits Conference (CICC), Sep. 2012.
  25. G. Kim, Y. Lee, S. Bang, I. Lee, Y. Kim, D. Sylvester, and D. Blaauw, “A 695pW Standby Power Optical Wake-up Receiver for Wireless Sensor Nodes,” IEEE Custom Integrated Circuits Conference (CICC), Sep. 2012.
  26. I. Lee, S. Bang, Y. Lee, Y. Kim, G. Kim, D. Sylvester, and D. Blaauw, “A 635pW Battery Voltage Supervisory Circuit for Miniature Sensor Nodes,” IEEE Symposium on VLSI Circuits (SOVC), June, 2012, pp. 202-203.
  27. Y. Lee, G. Kim, S. Bang, Y. Kim, I. Lee, P. Dutta, D. Sylvester, and D. Blaauw, “A Modular 1mm3 Die-stacked Sensing Platform with optical Communication and Multi-Modal Energy Harvesting,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2012, pp.772-775.
  28. Z. Foo, D. Devecsery, T. Schmid, N. Clark, R. Frank, M. Ghaed, Y. Kuo, I. Lee, Y. Park, Z. Renner, N. Slottow, V. Vinay, M. Wieckowski, D. Yoon, C. Schmidt, D. Blaauw, P. Chen, and P. Dutta, “A Case for Custom Silicon in Enabling Low-Cost Information Technology for Developing Regions,” ACM Symposium on Computing for Development, Dec. 2010.
  29. J. Cheon, I. Lee, J. Lee, Y. Chae, Y. Yoo, and G. Han, “An Analog Front-End of a Fire Detection SOC for a Fire Alarm System,” IEEE Sensors Conf., Oct, 2008, pp. 772-775.
  30. Y. Chae, I. Lee, and G. Han, “A 0.7V 36μW 85dB-DR Audio ΔΣ Modulator Using Class-C Inverter,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2008, pp. 490-491.
  31. I. Lee, Y. Chae, and G. Han, “A Low Power Dual-Mode Sigma-Delta Modulator for GSM/WCDMA Receivers,” IEEE International Conference on Electronics, Circuits and Systems (ICECS), Dec. 2007, pp. 1151-1154.