An ultra-low noise current source for magnetoresistive biosensors biasing

Costa, Tiago; Piedade, M.S.; Santos, M.B.

doi:10.1109/biocas.2012.6418507

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…The current sources' noise characteristics achieved in Ciofi et al (1997) and Scandurra et al (2014) meet the requirements for the DCCS (Table 1). Table 1 also shows that the noise of the current source (Costa et al, 2012), which is built using semiconductor voltage reference, exceeds the specified limits several times over. Devices that developed by Ciofi et al (1997) and Scandurra et al (2014) are designed to work in the laboratory in a relatively narrow temperature range.…”

Section: Development Of Digitally Controlled Current Sourcementioning

confidence: 98%

“…As a digital-to-analog converter, one of the best monolithic models -a 20 bit DAC AD5791 with temperature drift 0.05 ppm • C −1 -was selected (Egan, 2010). As the data sheet of this component (Analog Devices, Inc., 2013) contains incomplete information regarding the noise level at low frequencies, these characteristics were examined in two circuit configurations: with bipolar (Fig.…”

Section: Dac Configuration -Bipolar Vs Unipolar Reference Inputmentioning

confidence: 99%

“…In order to solve this problem, we are going to use these sensors as zero field indicators inside the vector compensation coil system similar to those used in spaceborne magnetometers (Auster et al, 2009;Nielsen et al, 1995). So, besides the sensor performance, it is very important to create (Scandurra et al, 2014) No data 12 3 Current source C (Costa et al, 2012) No data No data 30…”

Section: Introductionmentioning

confidence: 99%

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Possibilities of further improvement of 1 s fluxgate variometers

Marusenkov¹

2017

Geosci. Instrum. Method. Data Syst.

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Abstract. The paper discusses the possibility of improving temperature and noise characteristics of fluxgate variometers. The new fluxgate sensor with a Co-based amorphous ring core is described. This sensor is capable of improving the signal-to-noise ratio at the recording short-period geomagnetic variations. Besides the sensor performance, it is very important to create the high-stability compensation field that cancels the main Earth magnetic field inside the magnetic cores. For this purpose the new digitally controlled current source with low noise level and high temperature stability is developed.

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Section: Development Of Digitally Controlled Current Sourcementioning

confidence: 98%

Section: Dac Configuration -Bipolar Vs Unipolar Reference Inputmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Possibilities of further improvement of 1 s fluxgate variometers

Marusenkov¹

2017

Geosci. Instrum. Method. Data Syst.

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“…In the case of current sources, the noise also depends on the output current, load impedance and frequency. Consequently, an adequately selected device can obtain output current noise as low as a few pA/ √ Hz [53][54][55][56][57][58][59]. The selected amplifier and its performances are crucial elements that usually set system capabilities, such as noise, bandwidth and input signal range.…”

Section: Noise Measurementsmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Bielecki

Achtenberg

Kopytko

et al. 2022

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The review includes results of analyses and research aimed at standardizing the concepts and measurement procedures associated with photodetector parameters. Photodetectors are key components that ensure the conversion of incoming optical radiation into an electrical signal in a wide variety of sophisticated optoelectronic systems and everyday devices, such as smartwatches and systems that measure the composition of the Martian atmosphere. Semiconductor detectors are presented, and they play a major role due to their excellent optical and electrical parameters as well as physical parameters, stability, and long mean time to failure. As their performance depends on the manufacturing technology and internal architecture, different types of photodetectors are described first. The following parts of the article concern metrological aspects related to their characterization. All the basic parameters have been defined, which are useful both for their users and their developers. This allows for the verification of photodetectors' workmanship quality, the capabilities of a given technology, and, above all, suitability for a specific application and the performance of the final optoelectronic system. Experimentally validated meteorological models and equivalent diagrams, which are necessary for the correct analysis of parameter measurements, are also presented. The current state of knowledge presented in recognized scientific papers and the results of the authors' works are described as well.

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“…The current sources' noise characteristics achieved in (Ciofi et al, 1997;Scandurra et al, 2014) meet the requirements to the DCCS (Table 1). Table 1 also shows that the noise of the current source (Costa et al, 2012), Geosci. Instrum.…”

Section: Development Of Digitally Controlled Current Sourcementioning

confidence: 99%

Possibilities of further improvement of 1-second fluxgate variometers

Marusenkov¹

2017

Preprint

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Abstract. The paper discusses the possibility to improve temperature and noise characteristics of fluxgate variometers. The new fluxgate sensor with a Co-based amorphous ring core is described. This sensor is capable to improve the signal-noise ratio at the recording short-period geomagnetic variations. Besides the sensor performance, it is very important to create the high stability compensation field, which is canceling the main Earth magnetic field inside the magnetic cores. For this purpose the new digitally controlled current source with low noise level and high temperature stability is developed.

show abstract

An ultra-low noise current source for magnetoresistive biosensors biasing

Cited by 12 publications

References 11 publications

Possibilities of further improvement of 1 s fluxgate variometers

Possibilities of further improvement of 1 s fluxgate variometers

Bulletin of the Polish Academy of Sciences: Technical Sciences

Possibilities of further improvement of 1-second fluxgate variometers

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