@inproceedings{discovery10195849,
            note = {This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.},
            year = {2024},
       publisher = {IEEE},
       booktitle = {2024 IEEE International Symposium on Circuits and Systems (ISCAS)},
           month = {July},
         address = {Singapore, Singapore},
         journal = {Proceedings - IEEE International Symposium on Circuits and Systems},
           title = {A 199 {\ensuremath{\mu}}W, 82.9\% Efficiency Current Driver with Active Common-Mode Reduction for Impedance-Based Tactile Sensors},
        abstract = {This paper presents a differential current driver based on a current feedback structure, designed to drive hydrogel sensors. It achieves low power consumption, low common-mode signal on the load, and high current efficiency. The use of a negative unit gain buffer reduces the common-mode signal on the load arising from process variations. The current driver was designed in a 65-nm CMOS technology with a 3.3 V supply. Simulation results demonstrate a THD of 0.4\% at 125 kHz, for 40 {\ensuremath{\mu}}Ap-p output current. The common-mode voltage on the load is reduced by 98.96\% compared to a conventional topology using two independent drivers. The total current consumption is 60.3 {\ensuremath{\mu}}A, resulting in a current efficiency of 82.9\%. The simulated output impedance is 2.76 M? at 125 kHz and 1.47 M? at 300 kHz.},
             url = {http://dx.doi.org/10.1109/iscas58744.2024.10558093},
        keywords = {Power demand, Power measurement, Impedance measurement,
Hydrogels, Current measurement, Simulation, Tactile sensors},
          author = {Wu, Z and Wu, Y and Demosthenous, A},
            issn = {0271-4310}
}