A 6.7nV/&amp;#x221A;Hz Sub-mHz-1/f-corner 14b analog-to-digital interface for rail-to-rail precision voltage sensing

Ezekwe, C.D.; Vanderhaegen, J.; Xing, Xinyu; Balachandran, Ganesh K.

doi:10.1109/isscc.2011.5746304

Cited by 8 publications

(5 citation statements)

References 2 publications

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“…The best-case error voltage of the ROIC was ±0.01 mV at a gain of 100 times. The performance of the ROIC is summarized in Table I and compared with that of other state-of-the-art devices [28][29][30]. Compared with other designs, the power of the ROIC discussed in this paper is 1.3 mW, which is 1.8 times better than that of [28] and 5 times better than that of [30].…”

Section: Resultsmentioning

confidence: 94%

“…The performance of the ROIC is summarized in Table I and compared with that of other state-of-the-art devices [28][29][30]. Compared with other designs, the power of the ROIC discussed in this paper is 1.3 mW, which is 1.8 times better than that of [28] and 5 times better than that of [30]. The conversion time of this paper is 2 ms, 25 times better than that of [28] and 85 times better than that of [29].…”

Section: Resultsmentioning

confidence: 99%

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A low power read-out integrated circuit for multiple sensors

Huang

Wei

Wang

et al. 2020

IEICE Electron. Express

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This paper proposes a low power read-out integrated circuit (ROIC) for multiple sensors having a DC output signal. It comprises a chopper-stabilized instrumentation amplifier (CSIA) followed by a second-order incremental analog-to-digital converter (IADC). The CSIA has a dual-frequency path to effectively eliminate any 1/f noise and offset. A variable gain module (VGM) is also connected to the CSIA to improve its range of potential applications. A CMOS buffer amplifier followed by the CSIA is used to achieve the ROIC's linearity and drive capability. The back-end of the ROIC has a switchedcapacitor IADC to provide a digital output. The correlated double sampling (CDS) technique was used in the IADC's first integrator to reduce the offset and noise. The combination of these techniques enables the ROIC to achieve an input referred offset of 5 μV and a best error voltage of ±0.01 mV. The ROIC was implemented in 0.18 μm CMOS technology. It occupies an area of approximately 2.56 mm2 and consumes 835 μA of current from a 1.6 V of supply voltage.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

A low power read-out integrated circuit for multiple sensors

Huang

Wei

Wang

et al. 2020

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…The spectrum corresponds to a 3.7-nV/ √ Hz noise level. By decimating the ROIC's output with an off-chip sinc 3 filter and then acquiring 2×10 8 samples of the filter's output over 100 s, its 1/ f corner frequency was found to be about 0.04 Hz. Measurements on 10 samples show that the ROIC achieves 0.3% relative gain error and 7-μV voltage offset (Fig.…”

Section: A Electrical Measurementsmentioning

confidence: 99%

9.8 An energy-efficient 3.7nV/√Hz bridge-readout IC with a stable bridge offset compensation scheme

Jiang

Makinwa

Nihtianov

2017

2017 IEEE International Solid-State Circuits Conference (ISSCC)

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This paper describes an energy-efficient bridge readout IC (ROIC), which consists of a capacitively coupled instrumentation amplifier (CCIA) that drives a continuous-time delta-sigma modulator (CTM). By exploiting the CCIA's ability to block dc common-mode voltages, the bridge's bias voltage may exceed the ROIC's supply voltage, allowing these voltages to be independently optimized. Since bridge output is typically much smaller than bridge offset, a digital to analog converter (DAC) is used to compensate this offset before amplification and thus increase the CCIA's useful dynamic range. Bridge loading is reduced by using a dual-path positive feedback scheme to boost the CCIA's input impedance. Furthermore, the CCIA's output is gated to avoid digitizing its output spikes, which would otherwise limit the ROIC's linearity and stability. The ROIC achieves an input-referred noise density of 3.7 nV/ √ Hz, a noise efficiency factor (NEF) of 5, and a power efficiency factor (PEF) of 44, which both represent the state of the art. A pressure sensing system, built with the ROIC and a differential pressure sensor (AC4010), achieves 10.1-mPa (1σ ) resolution in a 0.5-ms conversion time. The ROIC dissipates about 30% of the system's power dissipation and contributes about 6% of its noise power. To reduce the sensor's offset drift, a temperature compensation scheme based on an external reference resistor is used. After a two-point calibration, this scheme reduces bridge offset drift by 80× over a 50°C range.

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“…In contrast, indirect current-feedback IAs (CFIAs) can be more power efficient, since they avoid noise folding and only require a single output stage [6]- [9]. Although capacitively-coupled IAs (CCIAs) are even more power efficient than CFIAs [10] and have been applied to a read-out IC that achieves a low noise level of 6.7nV/√Hz [11], their input impedances are somewhat limited by the switching impedance of input capacitors. To achieve high input impedance for bridge read-out, a precision CFIA has been reported in [6] that achieves µV-level offset, a 15nV/√Hz noise density and a 1mHz 1/f noise corner, while only dissipating 1.2mW.…”

Section: Introductionmentioning

confidence: 99%

A 20-b $\pm$40-mV Range Read-Out IC With 50-nV Offset and 0.04% Gain Error for Bridge Transducers

Chae

Huijsing

et al. 2012

IEEE J. Solid-State Circuits

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Linguistic Society of America is collaborating with JSTOR to digitize, preserve and extend access to Language. http://www.jstor.org I. DIE PERFEKTUMSCHREIBUNG DES PASSIVS MIT SEIN 'For every wight which that to Rome went, Halt nat o path, or alwey o manere.' (Chaucer, Troilus and Cresida, II. 6.) Mit Absicht wird in vorliegender historischen Abhandlung die Entwicklung der passiven Perfektumschreibungen zuerst geschildert, da sie sich zuerst entwickelten, wiihrend die Perfektumschreibungen des Aktivs jiingeren Datums sind (vgl. unten, S. 54). Um die teilweise recht verschlungenen Pfade in der Entwicklung der Perfektumschreibungen des Passivs klar verfolgen zu konnen, schien es ratsam, zunachst meine Stellungsnahme zu der nocht nicht einstimmig beantworteten Frage zu erklaren, ob man eine Umschreibung vom Typ ist geladen unserem modernen Sprachempfinden nach iiberhaupt als zum passiven Genus gehorig zu betrachten habe. Nach Prof. Behaghel, Deutsche Syntax ? 645, geh6ren 'die zahlreichen Verbindungen von wesan mit dem Part. Prat. in adjektivischer Verwendung, die der Schilderung des Ergebnisses dienen', nicht zu den Passivumschreibungen. Diese Erklarung bezieht sich natiirlich auch auf die Verbindungen des nhd. sein mit dem Part. Prat.: nach seiner Ansicht dienen sie nur reinen Ergebnisschilderungen (vgl. ibid. ? 647. A. 2. Absatz), die dem vorgenannten Zitat zufolge nicht zum Passiv zu rechnen sind. Prof. Curme dagegen begreift jene Verbindungen mit in das Passivsystem ein, macht aber den Unterschied zwischen einem aktionalen und einem statalen Passiv: ' .... the forms with werden denote an action going on or an act conceived as a whole, while the forms with sein denote a state that has resulted from previous action' (Gram. German Lang. ?194. 4). Wenn nun eine Verbindung vom Typ (Die Flinte) ist geladen einer Ergebnisschilderung dient, so schlieszt der Ausdruck logischerweise mit ein, dasz eine vorangegangene Handlung-die durch die Verbalwurzel des Partizipiums eindeutig angegeben wird-stattgefunden haben musz, die die Flinte affizierte; d.h., die Flinte wurde von dem vorangegangenen Vorgang betroffen, sie war also passiv; denn etwaiges ureigenes, der Flinte innewohnendes aktionales Handlungsvermogen kommt hier nicht 7 LANGUAGE DISSERTATION NO. 6, 1929in Betracht, das zustandliche Ergebnis (ist geladen) hervorgebracht zu haben: haben wir doch ein Part. Prat. eines transitiven Verbs vor uns, das schon seit dem Urindogermanischen in fast alien idg. Sprachen (vgl. S. 9) hauptsachlich passive Bedeutung besitzt,l die also aktionale Bedeutung ausschlieszt. Aus diesem Grunde wird in vorliegender Arbeit das Passivelement einer solchen Verbindung vom Typ ist geladen mit dem Adjektiv passivi...

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A 6.7nV/√Hz Sub-mHz-1/f-corner 14b analog-to-digital interface for rail-to-rail precision voltage sensing

Cited by 8 publications

References 2 publications

A low power read-out integrated circuit for multiple sensors

A low power read-out integrated circuit for multiple sensors

9.8 An energy-efficient 3.7nV/√Hz bridge-readout IC with a stable bridge offset compensation scheme

A 20-b $\pm$40-mV Range Read-Out IC With 50-nV Offset and 0.04% Gain Error for Bridge Transducers

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