On-Chip Active Filter for Electrocardiographic Signals Through CMOS Pseudo Resistors

This brief describes the conception, analysis, and design of a 20.89-hertz band-pass front-end analog filter tailored for biopotential signals. The principle of operation considers the integration of active circuits exhibiting large time-constant networks by CMOS pseudo resistances. A strategic loca...

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Published in:IEEE transactions on circuits and systems. II, Express briefs Vol. 72; no. 7; pp. 883 - 887
Main Author: Gonzalez-Diaz, Victor R. Gonzalez
Format: Journal Article
Language:English
Published: New York IEEE 01.07.2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Analog filter
Analogue filters
Artificial intelligence
Band-pass filters
Bandpass filters
Bandwidth
biopotential
Capacitance
Circuits
CMOS
electrocardiographic
Figure of merit
Filtering
Integrated circuits
low-transconductance
MOS devices
pseudo resistance
Resistors
Transconductance
Transistors
ISSN:1549-7747, 1558-3791
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Abstract This brief describes the conception, analysis, and design of a 20.89-hertz band-pass front-end analog filter tailored for biopotential signals. The principle of operation considers the integration of active circuits exhibiting large time-constant networks by CMOS pseudo resistances. A strategic location of these pseudo resistances enables the filter to achieve the corresponding design specifications with no external capacitors. The experimental results with a CMOS 180 nanometer integrated circuit prototype achieve a competitive Figure of Merit in a 0.06 square millimeters area, exhibiting advantages in area and system performance.
AbstractList This brief describes the conception, analysis, and design of a 20.89-hertz band-pass front-end analog filter tailored for biopotential signals. The principle of operation considers the integration of active circuits exhibiting large time-constant networks by CMOS pseudo resistances. A strategic location of these pseudo resistances enables the filter to achieve the corresponding design specifications with no external capacitors. The experimental results with a CMOS 180 nanometer integrated circuit prototype achieve a competitive Figure of Merit in a 0.06 square millimeters area, exhibiting advantages in area and system performance.
Author Gonzalez-Diaz, Victor R. Gonzalez
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Cites_doi 10.1109/TCSII.2017.2695366
10.1109/JSSC.2003.811979
10.1109/ACCESS.2023.3336983
10.1109/TCSII.2017.2741348
10.1109/TBCAS.2018.2882521
10.1109/82.899631
10.1109/tcsii.2018.2809470
10.1109/TBCAS.2008.2007423
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SubjectTerms Analog filter
Analogue filters
Artificial intelligence
Band-pass filters
Bandpass filters
Bandwidth
biopotential
Capacitance
Circuits
CMOS
electrocardiographic
Figure of merit
Filtering
Integrated circuits
low-transconductance
MOS devices
pseudo resistance
Resistors
Transconductance
Transistors
Title On-Chip Active Filter for Electrocardiographic Signals Through CMOS Pseudo Resistors
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