A Paper Accepted to the 2024 Symposium on VLSI Circuits
Our paper titled “A 0.29pJ/step Fully Discrete-Time Charge Domain Bridge-to-Digital Converter for Force Sensing in Spinal Implants Using RC Bridge” has been accepted to the 2024 Symposium on VLSI Circuits.
Authored by a Ph.D. student, Tim Keller, this paper proposes replacing the conventional Wheatstone Bridge to the novel RC Bridge that improves the energy efficiency and sensitivity of the resistance sensing.
Together with the series-parallel amplifier and charge-injection SAR ADC, this work achieved 0.29pJ/step energy efficiency, more than 10x reduction compared to the state-of-the arts.