Repository logo
 
Publication

A Tunable Gain and Bandwidth Low-Noise Amplifier with 1.44 NEF for EMG and EOG Biopotential Signal

2023-06Contribution to journal Open access
Simple item page
dc.contributor.authorVieira, Rafael
dc.contributor.authorNäf, Fabian
dc.contributor.authorMartins, Ricardo
dc.contributor.authorHorta, Nuno
dc.contributor.authorLourenço, N.
dc.contributor.authorPóvoa, Ricardo
dc.date.accessioned2025-10-08T11:15:24Z
dc.date.available2025-10-08T11:15:24Z
dc.date.issued2023-06
dc.description.abstractThis paper presents a low-noise inverter-based current-mode instrumentation amplifier with tunable gain and bandwidth for electromyogram (EMG) and electrooculogram (EOG) biopotential signals, targeting low input noise while maintaining low power consumption. The gain tuning method is based on pseudo-resistors, whereas the bandwidth is tunable due to a varactor system that is controlled by the same control voltage that tunes the gain. The circuit was designed and manufactured using the 110 nm UMC CMOS technology node, occupying an area of 0.624 mm2. The circuit presents a functioning mode for each biopotential signal with different characteristics, for the EMG a gain of 34.7 dB and a bandwidth of 1412 Hz was measured, with an input referred noise of 1.407 μV which matches a noise efficiency factor of 1.44. The EOG mode achieves a 39.5 dB gain and a 22.4 Hz bandwidth while presenting an input-referred noise of 0.829 μV corresponding to a noise efficiency factor of 6.37. For both modes, the supply voltage is 1.2 V and the circuit consumes 1 μA.eng
dc.identifier.citationVieira, R., Näf, F., Martins, R., Horta, N., Lourenço, N., & Póvoa, R. (2023). A tunable gain and bandwidth low-noise amplifier with 1.44 NEF for EMG and EOG biopotential signal. Electronics, 12(12), 2592.
dc.identifier.doi10.3390/electronics12122592
dc.identifier.urihttp://hdl.handle.net/10400.26/58958
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relation.hasversionhttps://www.mdpi.com/2079-9292/12/12/2592
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectlow-noise amplifier
dc.subjectlow power
dc.subjecttunable gain
dc.subjecttunable bandwidth
dc.subjectbiopotential signals
dc.subjectCMOS
dc.titleA Tunable Gain and Bandwidth Low-Noise Amplifier with 1.44 NEF for EMG and EOG Biopotential Signaleng
dc.typecontribution to journal
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.titleElectronics
oaire.citation.volume12
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
A Tunable Gain and Bandwidth Low-Noise Amplifier with.pdf
Size:
11.44 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.85 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ENIDH – EEM - Artigo Científico