TY  - GEN
N2  - A wideband, CMOS current driver for bioimpedance measurement applications has been designed employing nonlinear feedback. With the introduction of phase compensation, the circuit is able to operate at frequencies higher than the pole frequency of the output transconductor with minimum phase delay. Moreover, it isolates the poles required for stability from the high frequency characteristics of the output transconductor. The circuit has been simulated in a 0.35-?m CMOS technology and operates from ±2.5 V power supplies. Simulations show that for a 1 mAp-p output current, the phase delay is less than 1° for frequencies up to 3 MHz, rising to 1.5° at 5 MHz. Dual frequency currents to the load are demonstrated.
ID  - discovery1537699
PB  - IEEE
UR  - http://doi.org/10.1109/ISCAS.2016.7539087
SN  - 0271-4302
A1  - Neshatvar, N
A1  - Langlois, P
A1  - Demosthenous, A
T3  - IEEE International Symposium on Circuits and Systems
KW  - Science & Technology
KW  -  Technology
KW  -  Engineering
KW  -  Electrical & Electronic
KW  -  Engineering
TI  - An Improved Wideband CMOS Current Driver for Bioimpedance Applications
AV  - public
SP  - 2447
Y1  - 2016/01/01/
EP  - 2450
N1  - © 2016 IEEE. This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
ER  -