Implementation of Rail-to-Rail Operational Amplifier for Biomedical Applications

Min Chin Lee; Zth Ru Yang; Zth Jing Hu

doi:10.4028/www.scientific.net/AMM.130-134.434

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Implementation of Rail-to-Rail Operational Amplifier for Biomedical Applications
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134Implementation of Rail-to-Rail Operational...

Implementation of Rail-to-Rail Operational Amplifier for Biomedical Applications

Abstract:

This paper proposes gain boosting architecture of a rail-to-rail folded cascaded operational amplifier with CMFB scheme that employing fully differential pair amplifier for applications to biomedical signal process. The proposed rail-to-rail folded cascaded single stage OPA is design and implemented using the TSMC 0.35μm CMOS 2P4M process. Based on simulated and measured results , the chip size is with power dissipation about 1.6mW, input common mode votage range from 0V to 3.3 V, maximum DC gain 82 dB, 114 dB CMRR and 86 dB PSRR.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

434-437

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.434

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Online since:

October 2011

Authors:

Min Chin Lee, Zth Ru Yang, Zth Jing Hu

Keywords:

CMRR, Common-Mode Feedback (CMFB), Gain Boosting, PSRR, Rail-to-Rail Folded Cascaded OPA

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