Design and Implementation of 85dB CMRR, 4.2 MHz CMOS Instrumentation Amplifier for Bio-Electric Signals

International Journal of Electrical and Electronics Engineering
© 2023 by SSRG - IJEEE Journal
Volume 10 Issue 8
Year of Publication : 2023
Authors : Milind P Gajare, Dnyandeo K Shedge, Mohini P Sardey, Vinayak K Bairagi
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How to Cite?

Milind P Gajare, Dnyandeo K Shedge, Mohini P Sardey, Vinayak K Bairagi, "Design and Implementation of 85dB CMRR, 4.2 MHz CMOS Instrumentation Amplifier for Bio-Electric Signals," SSRG International Journal of Electrical and Electronics Engineering, vol. 10,  no. 8, pp. 195-205, 2023. Crossref, https://doi.org/10.14445/23488379/IJEEE-V10I8P119

Abstract:

This paper presents the design and Implementation of a novel CMOS Instrumentation Amplifier using capacitive neutralization and feedback transconductance techniques for bioelectric signal enhancement. The proposed amplifier also implements indirect current feedback, operating at a 3-volt supply. With a compact footprint of 0.062mm² on the chip, the amplifier achieves an impressive bandwidth of 4.2MHz and 85 dB CMRR. Implemented using 0.25μm CMOS technology, the proposed Instrumentation Amplifier showcases notable characteristics.

Keywords:

Bandwidth, Bioelectric signals, CMRR, ICMR, Indirect current feedback, Power consumption.

References:

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