TY  - GEN
KW  - Power demand
KW  -  Power measurement
KW  -  Impedance measurement
KW  - 
Hydrogels
KW  -  Current measurement
KW  -  Simulation
KW  -  Tactile sensors
CY  - Singapore, Singapore
UR  - http://dx.doi.org/10.1109/iscas58744.2024.10558093
Y1  - 2024/07/02/
SN  - 0271-4310
A1  - Wu, Z
A1  - Wu, Y
A1  - Demosthenous, A
TI  - A 199 ?W, 82.9% Efficiency Current Driver with Active Common-Mode Reduction for Impedance-Based Tactile Sensors
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
ID  - discovery10195849
AV  - public
PB  - IEEE
N2  - 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 ?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 ?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.
ER  -