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Conference Paper
O. Faruqe, Chen, Z., Bhattacharya, S., Foysal, M. Fahim, Hasan, S., Truesdell, D. S., and Calhoun, B. H., A 0.36 mm² On-the-Fly I2C-to-SPI Converter for E-Textile Applications, in 2025 IEEE International Symposium on Circuits and Systems (ISCAS), In Press.
D. S. Truesdell, Li, S., and Calhoun, B. H., A 0.5V 560kHz 18.8fJ/Cycle Ultra-Low Energy Oscillator in 65nm CMOS with 96.1ppm/°C Stability Using a Duty-Cycled Digital Frequency-Locked Loop, in 2020 IEEE Symposium on VLSI Circuits (VLSI), 2020.PDF icon A 0.5V 560kHz 18.8fJ_Cycle Ultra-Low Energy Oscillator in 65nm CMOS with 96.1ppm_C Stability Using a Duty-Cycled Frequency-Locked Loop.pdf (2.67 MB)
J. Moody, Dissanayake, A., Bishop, H., Lu, R., Liu, N. X., Duvvuri, D., Gao, A., Truesdell, D. S., N. Barker, S., Gong, S., Calhoun, B. H., and Bowers, S. M., A -106dBm 33nW Bit-Level Duty-Cycled Tuned RF Wake-up Receiver, in 2019 Symposium on VLSI Circuits, Kyoto, Japan, 2019.
A. Dissanayake, Moody, J., Bishop, H. L., Truesdell, D. S., Muhlbauer, H., Lu, R., Gao, A., Gong, S., Calhoun, B. H., and Bowers, S. M., A -108dBm Sensitivity, -28dB SIR, 130nW to 41μW, Digitally Reconfigurable Bit-Level Duty-Cycled Wakeup and Data Receiver, in IEEE Custom Integrated Circuits Conference (CICC), 2020.
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.
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.
X. Liu, Truesdell, D. S., Faruqe, O., Parameswaran, L., Rickley, M., Kopanski, A., Cantley, L., Coon, A., Bernasconi, M., Wang, T., and Calhoun, B. H., A 33nW Fully Autonomous SoC with Distributed Cooperative Energy Harvesting and Multi-Chip Power Management for mm-scale System-in-Fiber, in IEEE Transactions on Biomedical Circuits and Systems, Invited paper, 2023.PDF icon A_33nW_Fully_Autonomous_SoC_with_Distributed_Cooperative_Energy_Harvesting_and_Multi-Chip_Power_Management_for_mm-scale_System-in-Fiber.pdf (16.09 MB)
D. S. Truesdell and Calhoun, B. H., A 640 pW 22 pJ/sample Gate Leakage-Based Digital CMOS Temperature Sensor with 0.25°C Resolution, in IEEE Custom Integrated Circuits Conference (CICC) 2019, Austin, TX, 2019.PDF icon A 640 pW 22 pJ_sample Gate Leakage-Based Digital CMOS Temperature Sensor with 0.25C Resolution.pdf (1.81 MB)
S. Gupta, Truesdell, D. S., and Calhoun, B. H., A 65nm 16kb SRAM with 131.5pW Leakage at 0.9V for Wireless IoT Sensor Nodes, in 2020 IEEE Symposium on VLSI Circuits (VLSI), 2020.PDF icon A 65nm 16kb SRAM with 131.5pW Leakage at 0.9V for Wireless IoT Sensor Nodes.pdf (935.56 KB)
A. Tanaka, He, S., Mounesi, R., Liu, X., Faruqe, O., Mim, N. Gahan, Truesdell, D. S., Nasiri, A., and Calhoun, B. H., An 81.0% Peak Efficiency, 1.0W/cm^3 Miniaturized 5V/1A AC-DC Converter using a Highly-Integrated Primary-Side Active Clamp Flyback Controller with Adaptive Frequency and Zero-Voltage Switching, in 2025 IEEE Custom Integrated Circuits Conference (CICC), In Press.
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.
D. S. Truesdell and Calhoun, B. H., Channel Length Sizing for Power Minimization in Leakage-Dominated Digital Circuits, in IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S), 2018.
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.
A. Alghaihab, Chen, X., Shi, Y., Truesdell, D. S., Calhoun, B. H., and Wentzloff, D. D., A Crystal-Less BLE Transmitter with -86dBm Frequency-Hopping Back-Channel WRX and Over-the-Air Clock Recovery from a GFSK-Modulated BLE Packet, in 2020 IEEE International Solid-State Circuits Conference (ISSCC), 2020.
O. Faruqe, Le, P., Lee, D., Liu, X., Abdelatty, O., Truesdell, D. S., and Calhoun, B. H., A Fully Integrated, Custom End-to-End PPG Sensing System for Ultra-Low Power Wearables, in 2025 IEEE International Symposium on Circuits and Systems (ISCAS), In Press.
A. Mallick, Bashar, M. Khairul, Truesdell, D. S., Calhoun, B. H., Joshi, S., and Shukla, N., Graph Coloring using Coupled Oscillator-based Dynamical Systems, in 2021 IEEE International Symposium on Circuits and Systems (ISCAS), 2021.
D. S. Truesdell and Calhoun, B. H., Improving Dynamic Leakage Suppression Logic with Forward Body Bias in 65nm CMOS, in IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S), 2019.
Z. Chen, Desman, B. E., Agrawal, A., Farrell, W., Owens, J., Truesdell, D. S., and Calhoun, B. H., ISPI: A 2-Wire Improved Serial Peripheral Interface with Automatic Routing Algorithm for 2-D In-Textile Distributed Computing and Storage Systems, in 2025 IEEE Custom Integrated Circuits Conference (CICC) , In Press.
D. S. Truesdell, Liu, X., Breiholz, J., Gupta, S., Li, S., and Calhoun, B. H., NanoWattch: A Self-Powered 3-nW RISC-V SoC Operable from 160mV Photovoltaic Input with Integrated Temperature Sensing and Adaptive Performance Scaling, in 2022 IEEE Symposium on VLSI Circuits (VLSI), (Equally-Credited Authors), 2022.PDF icon NanoWattch A Self-Powered 3-nW RISC-V SoC Operable from 160mV Photovoltaic Input with Integrated Temperature Sensing and Adaptive Performance Scaling.pdf (11.11 MB)
X. Liu, Truesdell, D. S., Faruqe, O., Parameswaran, L., Rickley, M., Kopanski, A., Cantley, L., Coon, A., Bernasconi, M., Wang, T., and Calhoun, B. H., A Self-Powered SoC with Distributed Cooperative Energy Harvesting and Multi-Chip Power Management for System-in-Fiber, in IEEE International Solid-State Circuits Conference (ISSCC), 2023.PDF icon 15.1_A_Self-Powered_SoC_with_Distributed_Cooperative_Energy_Harvesting_and_Multi-Chip_Power_Management_for_System-in-Fiber.pdf (1.51 MB)
P. Bassirian, Duvvuri, D., Truesdell, D. S., Liu, N. X., Calhoun, B. H., and Bowers, S. M., A Temperature-robust 27.6nW -65dBm Wakeup Receiver at 9.6GHz X Band, in 2020 IEEE International Solid-State Circuits Conference (ISSCC), 2020.
Journal Article
D. S. Truesdell, Li, S., and Calhoun, B. H., A 0.5V 560-kHz 18.8-fJ/Cycle On-Chip Oscillator with 96.1-ppm/°C Steady-State Stability Using a Duty-Cycled Digital Frequency-Locked Loop, IEEE Journal of Solid-State Circuits, 2021.PDF icon A 0.5-V 560-kHz 18.8-fJ_Cycle On-Chip Oscillator With 96.1ppm_C Steady-State Stability Using a Duty-Cycled Digital Frequency-Locked Loop.pdf (2.95 MB)
D. S. Truesdell, Dissanayake, A., and Calhoun, B. H., A 0.6-V 44.6-fJ/Cycle Energy-Optimized Frequency-Locked Loop in 65-nm CMOS With 20.3-ppm/°C Stability, IEEE Solid-State Circuits Letters (SSCL), 2019.PDF icon A 0.6-V 44.6-fJ Cycle Energy-Optimized Frequency-Locked Loop in 65-nm CMOS With 20.3-ppm C Stability.pdf (1.64 MB)
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.
D. S. Truesdell, Breiholz, J., Kamineni, S., Liu, N. X., Magyar, A., and Calhoun, B. H., A 6–140-nW 11 Hz–8.2-kHz DVFS RISC-V Microprocessor Using Scalable Dynamic Leakage-Suppression Logic, IEEE Solid-State Circuits Letters (SSCL), 2019.PDF icon A 6–140-nW 11 Hz–8.2-kHz DVFS RISC-V Microprocessor Using Scalable Dynamic Leakage-Suppression Logic (1.63 MB)

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