Analog Circuits and Systems for Voltage-Mode and Current-Mode Sensor Interfacing Applications

Marcellis, Andrea De; Ferri, Giuseppe

doi:10.1007/978-90-481-9828-3

Cited by 76 publications

(36 citation statements)

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“…We have chosen to classify them according to the amount of resistive variations and/or values, and then, considering the kind of sensor excitation (DC, AC), describing both Voltage-Mode and Current-Mode solutions [3].…”

Section: Fig 2 Accuracy and Precision Definitions And Their Relatiomentioning

confidence: 99%

“…In the analysis and characterization of circuits and systems for signal conditioning coming from sensors, it is opportune to evaluate the performances given by the sensor and the interface also under different operating conditions [2][3][4][5][6][7].…”

Section: The Main Parameters Of Sensor Electronic Interfacesmentioning

confidence: 99%

“…Generally, sensors that behave as pure resistors as well as those sensing elements which do not bear an alternating voltage (i.e., an AC excitation signal), since they give bad responses and lower lifetimes, can be biased through a constant voltage value (i.e., a DC excitation signal), especially when, for several specific applications, it is also possible to neglect the effect of their parasitic components (e.g., parasitic capacitance). On the contrary, in some application fields, these parasitics have to be known so to have a more complete information about the sensor [3][4][5][6][7].…”

Section: Sensors and Electronics Introduction On Signal Conditioningmentioning

confidence: 99%

“…The need of novel sensors and related electronic interfaces showing small dimensions and the capability of working with reduced both supply voltages (Low-Voltage, LV) and power consumption (Low-Power, LP), especially in portable applications, is in a continuous growth. In particular, when both sensor and electronic circuitry for its interfacing, which have to be developed in a suitable integrated technology (e.g., a standard CMOS), can be also combined into only one chip, it is possible to implement the so-called "Smart Sensor" [1][2][3][4].…”

Section: Sensors and Electronics Introduction On Signal Conditioningmentioning

confidence: 99%

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Resistive Sensor Interfacing

Marcellis

Ferri

Mantenuto

2013

Giant Magnetoresistance (GMR) Sensors

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Abstract. This chapter has the aim to give a complete overview on the first analog front-ends, describing some circuit and system solutions for the design of electronic interfaces suitable for resistive sensors showing different variation ranges: small, as in dedicated-application GMR sensors; wide, especially referred to GMR sensing devices whose baseline is unknown. After a description of the main interface parameters, the authors present several solutions, most of which do not require any calibration. These solutions are different according to the entity of resistive sensor variations, can utilize either AC or DC excitation voltages for the employed sensor and are developed in Voltage-Mode (VM, which considers the use of either the Operational Amplifier (OA) or the Operational Transconductance Amplifier (OTA) as main active block) as well as in Current-Mode (CM) approach (being in this case the Second Generation Current Conveyor (CCII) the active device). The described interfaces can be easily fabricated both as prototype boards, for a fast characterization, and as integrated circuits, also using modern microelectronics design techniques, in a standard CMOS technology with Low Voltage (LV) and Low Power (LP) characteristics, especially when designed for portable applications and instrumentation. Moreover, thanks to their reduced sizes in terms of chip area, the proposed solutions are suitable for being used for sensor arrays applications, where a number of sensors is employed, as in portable systems, to detect different environmental parameters.

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Section: Fig 2 Accuracy and Precision Definitions And Their Relatiomentioning

confidence: 99%

Section: The Main Parameters Of Sensor Electronic Interfacesmentioning

confidence: 99%

Section: Sensors and Electronics Introduction On Signal Conditioningmentioning

confidence: 99%

Section: Sensors and Electronics Introduction On Signal Conditioningmentioning

confidence: 99%

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Resistive Sensor Interfacing

Marcellis

Ferri

Mantenuto

2013

Giant Magnetoresistance (GMR) Sensors

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“…In the last decade, capacitive transducers have been gaining popularity, in particular in sensor applications [1]. Capacitive sensors are able to sense and evaluate changes in physical or chemical quantities of interest through the detection of capacitance variations related to modifications of the sensor geometry or in the dielectric material [2].…”

Section: Introductionmentioning

confidence: 99%

Linear Integrated Interface for Automatic Differential Capacitive Sensing

Barile

Ferri

Parente

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Abstract:In this work, the authors introduce a new full-analog front-end for differential capacitance sensors which provides a DC output voltage, directly proportional to the measurand variations. The readout circuit architecture is based on a De Sauty bridge as core of the capacitive sensing whereas the feedback circuitry performs the bridge autobalancing operation by means of changes in a multiplier output. The circuit is designed in a standard CMOS technology (AMS 0.35 µm) so is suitable for portable systems. Simulated results have shown a good agreement with the theoretical model being the percentage relative error less than 2.5%. Interface sensitivity is constant and values around 0.055 V/mm for the considered application.

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Mechanistic Insights into Gas Adsorption on 2D Materials

Joshi,

Ren,

Lin

et al. 2024

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Owing to their exceptional characteristics, such as one‐atom thickness, high specific surface area, and tunability of surfaces, 2D materials are excellent templates to study the surface‐dependent gas adsorption phenomenon. Moreover, the properties of 2D materials like morphology, bandgap, structure, and carrier mobility can be modulated easily by modification methods such as functionalization, defect and doping engineering. These modifications create and activate unconventional inert and active sites, leading to the selective adsorption of gases via mechanisms such as charge transfer kinetics, Schottky‐barrier modification, and surface interactions. These methods enhance the adsorption sites by adding covalent and non‐covalent moieties to the 2D surface and play a critical role in developing ultrafast gas sensing with high sensitivity, selectivity, fast response/recovery rates, and low detection limits. Here, this perspective is presented on the mechanism of the adsorption process of gases on modified 2D surfaces based on recent studies related to adsorption‐dependent applications of 2D materials.

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Analog Circuits and Systems for Voltage-Mode and Current-Mode Sensor Interfacing Applications

Cited by 76 publications

References 0 publications

Resistive Sensor Interfacing

Resistive Sensor Interfacing

Linear Integrated Interface for Automatic Differential Capacitive Sensing

Mechanistic Insights into Gas Adsorption on 2D Materials

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