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Thesis_final6.pdf (5.23 MB)
ETD Abstract Container
Abstract Header
A Compact Low Power Bio-Signal Amplifier with Extended Linear Operation Range
Author Info
Hasan, Md. Naimul
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=akron1358074945
Abstract Details
Year and Degree
2013, Master of Science, University of Akron, Electrical Engineering.
Abstract
This work presents a low power, small size bio-signal amplifier with extended linear operation range. The proposed scheme consists of an open loop rail-to-rail differential amplifier in the first stage and a closed loop amplifier in the second-stage that minimizes the gain reduction with output voltage level variation. Furthermore, an additional gain control feature compensates the gain degradation as the amplifier output level moves toward the supply rails. Voltage buffers are used in the first and second stages in a way that enables using smaller sized feedback resistors in the second stage. The amplifier performance is relatively insensitive to feedback resistor mismatch. In addition to providing an extended linear operation range, this approach reduces the area and power which is required for portable medical devices. The proposed amplifier is implemented using CMOS 0.35 ¿¿m technology with 3.3 V supply. The measurement results show a constant gain of 46 dB with linear operation range from 0.3 V to 3.08 V. The total harmonic distortion (THD) is 0.04% with power consumption of 18.5 ¿¿W and a core area of 0.063 mm^2.
Committee
Kye-Shin Lee, Dr. (Advisor)
Robert Veillette, Dr. (Committee Member)
Joan Carletta, Dr. (Committee Member)
Pages
56 p.
Subject Headings
Electrical Engineering
Keywords
Bio-signal amplifier
;
gain control
;
linear output range
;
low power
;
small size
;
THD
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RIS
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Citations
Hasan, M. N. (2013).
A Compact Low Power Bio-Signal Amplifier with Extended Linear Operation Range
[Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1358074945
APA Style (7th edition)
Hasan, Md. Naimul.
A Compact Low Power Bio-Signal Amplifier with Extended Linear Operation Range .
2013. University of Akron, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=akron1358074945.
MLA Style (8th edition)
Hasan, Md. Naimul. "A Compact Low Power Bio-Signal Amplifier with Extended Linear Operation Range ." Master's thesis, University of Akron, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1358074945
Chicago Manual of Style (17th edition)
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Document number:
akron1358074945
Download Count:
629
Copyright Info
© 2012, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.