Open AccessA 76db 828nv/√Hz Low Noise Bio Signal OTA For Neural Signal Recording Applications
Author(s) -
Sarin Vijay Mythry,
D. Jackuline Moni
Publication year - 2018
Publication title -
international journal of engineering and technology
Language(s) - English
Resource type - Journals
ISSN - 2227-524X
DOI - 10.14419/ijet.v7i3.3.14484
Subject(s) - power supply rejection ratio , common mode rejection ratio , signal (programming language) , bandwidth (computing) , cmos , computer science , noise (video) , power (physics) , electronic engineering , electrical engineering , engineering , telecommunications , physics , operational amplifier , artificial intelligence , amplifier , image (mathematics) , programming language , quantum mechanics
The low frequency, low amplitude biomedical signals which created a tremendous demand amongst clinicians and neuroscience researchers are to be amplified in the range of millihertz to kilohertz by rejecting the dc offsets. This research article presents a Bio Signal OTA (Bio-OTA) with 76dB gain, 828nV/ 16Hz"> noise and 390nW power is designed in 90nm CMOS process and also a brief survey on the different types of OTAs used for neuro recording applications is discussed. The Wilson current mirror is used to design 1volt Bio-OTA. The Common mode rejection ratio (CMRR) is obtained as 75dB, power supply rejection ratio (PSRR) is above 88dB and gain bandwidth product (GBW) is 223MHz.