Open AccessVersatile CMOS bio‐potential amplifier for high‐density neural recording applications
Author(s) -
Kim J.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.3497
Subject(s) - amplifier , direct coupled amplifier , operational amplifier , instrumentation amplifier , operational transconductance amplifier , fet amplifier , linear amplifier , electronic engineering , cmos , electrical engineering , power added efficiency , materials science , rf power amplifier , current feedback operational amplifier , computer science , engineering
A fully‐integrated low‐power and area‐efficient bio‐potential amplifier for high‐density neural recording applications is presented. Using a self‐biased amplifier structure, the bio‐potential amplifier can operate at a lower power with a reduced active area. The Miller capacitance and area‐efficient pad techniques harnessed in the amplifier also help to dramatically shrink the area of the amplifier. This implantable bio‐potential amplifier was fabricated using a 0.35 µm CMOS process and was verified on a bench top by observing ex vivo biological signals.