A 159 μW, Fourth Order, Feedforward, Mutli-bit Sigma Delta Modulator for 100 kHz Bandwidth Image Sensors in 65-nm CMOS Process

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dc.contributor.authorBashir, Mudasir
dc.contributor.authorRao Patri, Sreehari
dc.contributor.authorKrishnaprasad, K. S. R.
dc.coverage.issue2cs
dc.coverage.volume27cs
dc.date.accessioned2018-06-18T12:49:19Z
dc.date.available2018-06-18T12:49:19Z
dc.date.issued2018-06cs
dc.description.abstractA fourth-order, three-stage, feedforward cascade sigma-delta modulator (ƩΔM) for CMOS image sensor applications is realized in low leakage, high threshold voltage 65 nm CMOS standard process. A top down CAD methodology is used for the design of building blocks, which involves statistical and simulation optimization at different stages of modulator. The multi-bit ƩΔ architecture employs OTA sharing technique with the dual integrating scheme at the first stage and the gain boosted pseudo-differential class-C inverters as OTAs for the rest two stages for low area and power consumption. The operation of proposed ƩΔM is validated through post-layout simulations, considering worst case. The ƩΔM operates at a power supply of 1-V offering a peak signal-to-ratio of 92 dB and a peak signal-to-noise plus distortion ratio of 89 dB for a signal bandwidth of 100 kHz. The overall power and estimated area consumed by the ƩΔM including auxiliary blocks is 159 µW and 101.2 mm2, respectively.en
dc.formattextcs
dc.format.extent519-531cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2018 vol. 27, č. 2, s. 519-531. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2018.0519en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/83036
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2018/18_02_0519_0531.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectAnalog front enden
dc.subjectCMOS image sensoren
dc.subjectsigma-delta modulatoren
dc.subjectsignal-to noise ratioen
dc.subjectswitch capacitor circuitsen
dc.subjectgain boosted technologyen
dc.subjectdynamic element matchingen
dc.titleA 159 μW, Fourth Order, Feedforward, Mutli-bit Sigma Delta Modulator for 100 kHz Bandwidth Image Sensors in 65-nm CMOS Processen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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