Title :
Tunable Low Noise Amplifier Implementation With Low Distortion Pseudo-Resistance for in Vivo Brain Activity Measurement
Author :
Karasz, Zoltan ; Fiath, Richard ; Foldesy, Peter ; Rodriguez Vazquez, Angel
Author_Institution :
Inst. of Comput. Sci. & Control, Budapest, Hungary
Abstract :
This paper presents a low power neural signal amplifier with tunable cut-off frequencies. The presented compact amplifier, which is used for sensing various types of neural signals, reduces the size and the power consumption of the whole circuit. The distinguishing features of this solution are the large time constant, linearity, and small achievable area, which are realized with a configurable series of pseudo resistances. The proof of concept has been manufactured on TSMC 90 nm technology.
Keywords :
bioelectric phenomena; biomedical electronics; biomedical measurement; brain; low noise amplifiers; low-power electronics; neurophysiology; TSMC technology; compact amplifier; in vivo brain activity measurement; large time constant; linearity; low distortion pseudoresistance; low power neural signal amplifier; power consumption; size 90 nm; small achievable area; tunable low noise amplifier implementation; Capacitance; Cutoff frequency; Noise; Resistance; Resistors; Sensors; Transistors; Brain-computer interface; LFP; common-mode feedback; fully differential OTA; large time constant; neuro-amplifier; pseudo-resistor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2013.2294971
