A 76db 828nv/√Hz Low Noise Bio Signal OTA For Neural Signal Recording Applications

  • Authors

    • Sarin Vijay Mythry
    • D Jackuline Moni
    2018-06-21
    https://doi.org/10.14419/ijet.v7i3.3.14484
  • Bio-OTA, Brain Machine Interface, Biopotentials, Neural recording Amplifier, OTA.

  • 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.

     

     

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    Vijay Mythry, S., & Jackuline Moni, D. (2018). A 76db 828nv/√Hz Low Noise Bio Signal OTA For Neural Signal Recording Applications. International Journal of Engineering & Technology, 7(3.3), 48-53. https://doi.org/10.14419/ijet.v7i3.3.14484