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R. Agarwala, Wang, P., Bishop, H. L., Dissanayake, A., and Calhoun, B. H., “A 0.6V 785-nW Multimodal Sensor Interface IC for Ozone Pollutant Sensing and Correlated Cardiovascular Disease Monitoring”, IEEE Journal of Solid-State Circuits, 2021.

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C. J. Lukas, Yahya, F. B., Breiholz, J., Roy, A., Chen, X., Patel, H. N., Liu, N. X., Kosari, A., Li, S., Kamakshi, D. Akella, Ayorinde, O., Wentzloff, D. D., and Calhoun, B. H., “A 1.02 μW Battery-Less, Continuous Sensing and Post-Processing SiP for Wearable Applications”, IEEE Transactions on Biomedical Circuits and Systems, 2019.

08625544.pdf (3.22 MB)

A. Shrivastava, Akella, D., and Calhoun, B. H., “A 1.5nW, 32.768kHz XTAL Oscillator Operational from 0.3V Supply”, IEEE Journal of Solid-State Circuits (JSSC), vol. 51, 2016.

X. Liu, Chen, Z., Mim, N. Gahan, Agrawal, A., and Calhoun, B. H., “A 1pJ/Bit Bypass-SPI Interconnect Bus with I2C Conversion Capability and 2.3nW Standby Power for Fabric Sensing Networks”, in 2023 IEEE Biomedical Circuits and Systems Conference, 2023.

A 1pJbit Bypass-SPI Interconnect Bus with I2C Conversion Capability and 2.3nW Standby Power for Fabric Sensing Networks.pdf (2.54 MB)

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D. Akella, Shrivastava, A., and Calhoun, B. H., “A 23 nW CMOS ultra-Low Power Temperature Sensor Operational from 0.2 V”, in IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference, Rohnert Park, CA, 2015.

P. Wang, Agarwala, R., Ownby, N., Liu, X., and Calhoun, B. H., “A 2.3-5.7μW Tri-Modal Self-Adaptive Photoplethysmography Sensor Interface IC for Heart Rate, SpO2 , and Pulse Transit Time Co-Monitoring”, IEEE Transactions on Biomedical Circuits and Systems, 2024.

N. X. Liu, Agarwala, R., Dissanayake, A., Truesdell, D. S., Kamineni, S., Chen, X., Wentzloff, D. D., and Calhoun, B. H., “A 2.5 ppm/°C 1.05 MHz Relaxation Oscillator with Dynamic Frequency-Error Compensation and 8 µs Start-Up Time”, in IEEE European Solid-State Circuits Conference (ESSCIRC), Dresden, Germany, 2018.

N. X. Liu, Agarwala, R., Dissanayake, A., Truesdell, D. S., Kamineni, S., and Calhoun, B. H., “A 2.5 ppm/°C 1.05 MHz Relaxation Oscillator with Dynamic Frequency-Error Compensation and Fast Start-Up Time”, IEEE Journal of Solid-State Circuits (JSSC), 2019.

A. Agrawal, Chen, Z., Desman, B. E., Wang, J., Tanaka, A., Foysal, F., Hess, C. D., Farrell, W., Owens, J., Truesdell, D. S., and Calhoun, B. H., “A 2-Dimensional mm-scale Network-on-Textiles (kNOTs) for Wearable Computing with Direct Die-to-Yarn Integration of 0.6mm x 2.15mm SoC and bySPI chiplets”, in 2025 IEEE International Solid-State Circuits Conference (ISSCC), 2025.

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K. Craig, Shakhsheer, Y., Arrabi, S., Khanna, S., Lach, J., and Calhoun, B. H., “A 32b 90nm Processor Implementing Panoptic DVS Achieving Energy Efficient Operation from Sub-threshold to High Performance”, Journal of Solid State Circuits, 2014.

D. Akella, Shrivastava, A., Duan, C., and Calhoun, B. H., “A 36nW, 7 ppm/oC Fully On-Chip Clock Source System for Ultra-Low Power Applications”, Journal of Low Power Electronics and Applications (JLPEA), vol. 6, 2016.

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R. Agarwala, Wang, P., and Calhoun, B. H., “A 405nW/4.8μW Event-Driven Multi-Modal (V/I/R/C) Sensor Interface for Physiological and Environmental Co-Monitoring”, in 2021 IEEE Biomedical Circuits and Systems Conference (BioCAS), 2021.

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A. Klinefelter, Roberts, N., Shakhsheer, Y., Gonzalez, P., Shrivastava, A., Roy, A., Craig, K., Faisal, M., Boley, J., Oh, S., Zhang, Y., Akella, D., Wentzloff, D. D., and Calhoun, B., “A 6.45 μW Self-Powered IoT SoC with Integrated Energy-Harvesting Power Management and ULP Asymmetric Radios”, in ISSCC, San Francisco, CA, 2015.

A. Roy, Klinefelter, A., Yahya, F., Chen, X., Gonzalez, P., Lukas, C. J., Akella, D., Boley, J., Craig, K., Faisal, M., Oh, S., Roberts, N., Shakhsheer, Y., Shrivastava, A., Vasudevan, D., Wentzloff, D. D., and Calhoun, B., “A 6.45μW Self-Powered SoC with Integrated Energy-Harvesting Power Management and ULP Asymmetric Radios for Portable Biomedical Systems”, IEEE Transactions on Biomedical Circuits and Systems, vol. 9, pp. 862-874, 2015.

X. Liu, Agrawal, A., Tanaka, A., and Calhoun, B. H., “A 6nA Fully-Autonomous Triple-Input Hybrid-Inductor-Capacitor Multi-Output Power Management System with Multi-Rail Energy Sharing, All-Rail Cold Startup, and Adaptive Conversion Control for mm-scale Distributed Systems”, in 2024 IEEE International Solid-State Circuits Conference (ISSCC), 2024.

A_6nA_Fully Autonomous_Triple-Input_Hybrid-Inductor-Capacitor_Multi-Output_Power_Management_System_with_Multi-Rail_Energy_Sharing_All-Rail_Cold_Startup_and_Adaptive_Conve.pdf (1.55 MB)

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P. Wang, Agarwala, R., Bishop, H. L., Dissanayake, A., and Calhoun, B. H., “A 785nW Multimodal (V/I/R) Sensor Interface IC for Ozone Pollutant Sensing and Correlated Cardiovascular Disease Monitoring”, in 2020 IEEE Symposium on VLSI Circuits (VLSI), 2020.

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R. Agarwala, Wang, P., Tanneeru, A., Lee, B., Misra, V., and Calhoun, B. H., “An 88.6nW Ozone Pollutant Sensing Interface IC with a 159 dB Dynamic Range”, in ACM/IEEE International Symposium on Low Power Electronics and Design (ISLPED), 2020.

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Y. Shakhsheer, Khanna, S., Craig, K., Arrabi, S., Lach, J., and Calhoun, B. H., “A 90nm Data Flow Processor Demonstrating Fine Grained DVS for Energy Efficient Operation from 0.25V to 1.2V”, in Custom Integrated Circuits Conference, San Jose, 2011.

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S. Nalam, Chandra, V., Pietrzyk, C., Aitken, R. C., and Calhoun, B. H., “Asymmetric 6T SRAM with Two-phase Write and Split Bitline Differential Sensing for Low Voltage Operation”, in ISQED, 2010, pp. 139-146.

S. Z. Ahmed, Tan, Y., Truesdell, D. S., and Ghosh, A., “Auger Effect Limited Performance in Tunnel Field Effect Transistors”, in 5th Berkeley Symposium on Energy Efficient Electronics & Steep Transistors Workshop, Berkeley, CA, 2017.

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F. Yahya, Lukas, C. J., Breiholz, J., Roy, A., Patel, H. N., Liu, N. X., Chen, X., Kosari, A., Li, S., Akella, D., Ayorinde, O., Wentzloff, D. D., and Calhoun, B. H., “A battery-less 507nW SoC with integrated platform power manager and SiP interfaces”, in 2017 Symposium on VLSI Circuits, Kyoto, Japan, 2017.

F. Yahya, Lukas, C. J., Breiholz, J., Roy, A., Patel, H. N., Liu, N. X., Chen, X., Kosari, A., Li, S., Akella, D., Ayorinde, O., Wentzloff, D. D., and Calhoun, B. H., “A battery-less 507nW SoC with integrated platform power manager and SiP interfaces”, in 2017 Symposium on VLSI Circuits, Kyoto, Japan, 2017.

M. A. Hanson, Jr, H. C. Powell, Barth, A. T., Ringgenberg, K., Calhoun, B. H., Aylor, J. H., and Lach, J., “Body Area Sensor Networks: Challenges and Opportunities”, Computer, vol. 42, pp. 58–65, 2009.

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J. B. Stocking, Eberhardt, W. C., Shakhsheer, Y. A., Paulus, J. R., Appleby, M., and Calhoun, B. H., “A Capacitance-Based Whisker-like Artificial Sensor for Fluid Motion Sensing”, in IEEE Sensors, 2010.

A. Agrawal, Liu, X., Truesdell, D. S., and Calhoun, B. H., “Characterization of Stacked PV Cell Configurations in a Deep N-Well 65nm CMOS Technology”, in 2025 IEEE International Symposium on Circuits and Systems (ISCAS), In Press.

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