PITT Circuit Lab

PITT Circuit Lab develops energy-efficient sensing and computing systems using application-specific integrated circuit design technique. Also, we use our systems to solve critical problems in fields such as biomedical, infrastructure, energy, ecology, and internet-of-things by collaborating with researchers with expertise in these areas. 

Examples of research topics

• Miniature system development & optimization for target application goals

• Low-power energy-efficient adaptive/reconfigurable analog/digital circuit design

• Ultra-long-lifetime miniature system based on low-power energy harvester

• Energy-efficient power/battery management circuit design

Recent Highlights

1. C. Park, H. Jeong, J. Kim, H.-S. Ahn, J. Kim, K. Cho, and I. Lee, "Compact Low-Temperature CMOS Modeling Framework Using Measurement-Based VTH and ID Corrections,” IEEE Transactions on Circuits and Systems II (TCAS-II), accepted. (Co-corresponding authors)

2. H. Jeong, C. Park, K. Cho, and I Lee, “A 90-ppm/°C Cryogenic Voltage Reference Operating from 18 K to 53 K,” IEIE Journal of Semiconductor Technology and Science (JSTS), accepted. (Co-corresponding authors)

3. Y. Li, J. Sun, Y. -J. Won and I. Lee, "A Low-Power Hybrid BJT–CMOS Voltage Reference for 0 °C–170 °C Operation," IEEE Transactions on Circuits and Systems I: Regular Papers, doi: http://doi.org/10.1109/TCSI.2026.3699463 

4. E. A. Hamed and I. Lee, "A 7.33 nW Ratio Wake-Up Timer With XO and Auxiliary Oscillator for Real-Time Shock Recovery," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 34, no. 8, pp. 2681-2685, Aug. 2026, doi: http://doi.org/10.1109/TVLSI.2026.3695454 

5. K. Jeong, C. Livanelioglu, J. Liao, I. Lee and T. Jang, "A 3.47 NEF 175.2-dB FoMs Direct Digitization Front-End Featuring Delta Amplification Noise-Shaping SAR ADC for Biosignal Acquisition," IEEE Journal of Solid-State Circuits, vol. 61, no. 9, pp. 4829-4840, Sept. 2026, doi: http://10.1109/JSSC.2026.3685168 

6. I. Jeong, W. Park, W. G. Chung, M. G. Jeong, S. H. An, H. Eum, E. A. Hamed, H. S. Kang, D. W. Park, J. M. Woo, B. S. Bae, I. Lee, and J.-U. Park, “Universal Liquid Metal Interconnects for Next-Generation Glass Packaging,” Smart Structures, 2026, 7(4), e70435, , doi: http://doi.org/10.1002/sstr.70435 (Co-corresponding authors)

7. M. Shim, D. Kim, J.-H. Kim, M. Kim, Y. Li, E. A. Hamed, X. Wu, Y. Peng, J. Jeong, W. Jung, Y. Lee, S.-U. Shin, Y.-J. Won, and I. Lee, "Power Management Circuit Techniques for Miniature Biomedical Sensing Systems," IEEE Open Journal of the Solid-State Circuits Society (OJ-SSCS), vol. 6, pp. 25-46, 2026, doi: http://doi.org/10.1109/OJSSCS.2026.3655336 

8. M. Kim, M. Jeong, D. Seo, I. Lee and Y. Lee, "A 14.6× DR Output Power-Tracking CSCR SC Energy-Harvesting Interface Achieving 90.4%End-to-End Efficiency With Exponential DCO," IEEE Transactions on Power Electronics, vol. 41, no. 6, pp. 10405-10416, June 2026, doi: http://doi.org/10.1109/TPEL.2025.3649937 

9. Y. Le, Y. Li, and I. Lee ’ “Adaptive Thresholding Technique for Motion-Tracking DVS & DNF Systems,” IEEE Midwest Symposium on Circuits & Systems (MWSCAS), Aug. 2026, Cincinnati, OH.