31.3 nW, 0.5 V Bulk-Driven OTA for Biosignal Processing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F24%3A00560196" target="_blank" >RIV/60162694:G43__/24:00560196 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21460/23:00366991 RIV/00216305:26220/23:PU148477
Result on the web
<a href="https://doi.org/10.1109/ACCESS.2023.3279727" target="_blank" >https://doi.org/10.1109/ACCESS.2023.3279727</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/ACCESS.2023.3279727" target="_blank" >10.1109/ACCESS.2023.3279727</a>
Alternative languages
Result language
angličtina
Original language name
31.3 nW, 0.5 V Bulk-Driven OTA for Biosignal Processing
Original language description
This paper presents a new extremely low-voltage low-power bulk-driven (BD) operational transconductance amplifier (OTA) realized for low frequency biosignal processing. The CMOS structure of the OTA utilizes bulk-driven and self-cascode techniques in the subthreshold region, supporting the operation with the supply voltage (V-DD) as the threshold voltage (V-TH) of a single MOS transistor, i.e., V-DD = V-TH = 0.5 V, while offering nano power consumption (31.3 nW for 15 nA nominal setting current). Using the extremely low-voltage and low-power OTA in biosignal processing enables extending the lifetime of applications that are powered by battery or energy harvesting sources. The OTA has a 54.7 dB low frequency gain, 6.18 kHz gain bandwidth and 75 degrees phase margin at 15 pF load capacitance. The proposed OTA has been used to realize a bandpass filter (BPF) with adjustable gain for electrocardiogram (ECG) signal processing. The higher cutoff frequency of the BPF is adjustable electronically by a setting current and the BPF's gain can be adjusted by capacitors value. The total harmonic distortion (THD) of the BPF is -53.56 dB, the input integrated input-referred voltage noise is 17.9 mu V-rms, the common mode rejection ratio (CMRR) is 75 dB and the power supply rejection ratio (PSRR) is 87.7 dB. The BPF was designed in the Cadence program using 0.18 mu m CMOS technology from TSMC. The simulation results agree with the presented theory.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE ACCESS
ISSN
2169-3536
e-ISSN
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Volume of the periodical
11
Issue of the periodical within the volume
24 May 2023
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
56516-56525
UT code for WoS article
001010615300001
EID of the result in the Scopus database
2-s2.0-85161079847