Networked electrophysiology sensor-on-a-chip

Chen, Tsai; McNeill, John

doi:10.1109/imtc.2011.5944029

Cited by 4 publications

(8 citation statements)

References 30 publications

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“…2). This low-noise ultra-low-power architecture presents high CMRR and offers a well-controlled low cut-off frequency (since this frequency is not determined by highly variable MOS-bipolar high valued pseudo-resistors [9]). The low cutoff frequency is fixed by means of a novel local feedback loop at the output [2].…”

Section: Architecturementioning

confidence: 99%

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Integrated programmable analog front-end architecture for physiological signal acquisition

Oreggioni¹,

Silveira²

2014

2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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A versatile front-end capable of acquiring a wide range of physiological signals, thus reusing the same design and hardware in different contexts, is a valuable goal both for biomedical research and medical devices. In this work we present such an "all-terrain" programmable integrated front-end architecture and the trade-offs associated to its design. A low noise preamplifier is implemented using a novel architecture based on a differential-difference amplifier which applies gm-C techniques for fixing the cut-off frequencies. Moreover, this architecture is extended to be applied to the other stages of the front-end. The main design trade-offs (noise-power, gain-power, noise-gain and linearity-gain) of the front-end architecture are discussed and their impacts in the design of the processing chain in terms of assignment of gain, noise, linearity and programmability to each stage are shown. The front-end is designed in a 0.5µm CMOS process. The gain is programmable between 57dB and 99dB, the high cut-off frequency is programmable between 116Hz and 5.2kHz, the low cut-off frequency is 18Hz, the maximum power consumption of the front-end is 11.2µA and its maximum equivalent input-referred noise voltage is 1.87µVrms.

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Section: Architecturementioning

confidence: 99%

“…However, these works, unlike the present work, do not address the design process to define the architecture. [9] considers similar front-end specs, except for the ultra low power requirement.…”

Section: Introductionmentioning

confidence: 99%

Integrated programmable analog front-end architecture for physiological signal acquisition

Oreggioni¹,

Silveira²

2014

2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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“…It should also be wireless, both from the powering and from the data transmission points of view, as previous studies have already shown the issues related to the use of wired devices [18]. Moreover, more and more acquisition systems in the fields of healthcare and radiation are wireless and feature small size and low-power electronics [2], [19].…”

Section: System Architecturementioning

confidence: 99%

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

Conti

Placidi

Biasini

et al. 2013

IEEE Trans. Instrum. Meas.

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Interventional radiologists and staff members, during all their professional activities, are frequently exposed to protracted and fractionated low doses of ionizing radiation. Due to skin tissues and peripheral blood irradiation, these exposures can result in deterministic effects (radiodermatitis, aged skin, and hand depilation) or stochastic ones (skin and non-solid cancer incidence). The authors present a novel approach to perform online monitoring of the staff during their interventions by using a device based on an Active Pixel Sensor. The performance of the sensor as an X-ray radiation detector has been evaluated with a proper experimental setup: the number of photons and the generated charge have been assessed as dosimetric observables from the frames acquired by the sensor using a two-threshold clustering algorithm, the efficiency of which has been evaluated as well. The correlation of these observables with passive dosimeter dose measurements has been analyzed: a good linearity has been demonstrated, and the response difference between pulsed and continuous operational modes is reduced to less than 10%, marking a distinct improvement with respect to commercial Active Personal Dosimeters.Index Terms-Active Personal Dosimeter, CMOS pixels, dosimetry, interventional radiology (IR), X-ray.

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“…It should also be wireless, both from the powering and from the data transmission points of view, as previous studies have already shown the issues related to the use of wired devices [9]. Moreover, more and more acquisition systems in the fields of healthcare and radiation are wireless and feature small size and low-power electronics [10]- [11].…”

Section: System Architecturementioning

confidence: 99%

An active pixel sensor based system for real time dosimeter in interventional radiology

Conti

Placidi

Baldaccini

et al. 2012

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings

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Networked electrophysiology sensor-on-a-chip

Cited by 4 publications

References 30 publications

Integrated programmable analog front-end architecture for physiological signal acquisition

Integrated programmable analog front-end architecture for physiological signal acquisition

Use of a CMOS Image Sensor for an Active Personal Dosimeter in Interventional Radiology

An active pixel sensor based system for real time dosimeter in interventional radiology

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