Oscillation-Based Test Strategies

Huertas, Gloria; Léger, Gildas; Vazquez, D.; Rueda, A.; Huertas, J.L.

doi:10.1007/978-0-387-23521-9_9

Cited by 4 publications

(8 citation statements)

References 21 publications

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“…As previously mentioned, to estimate the concentration of cells at each moment of the experiment, several points must be known: The equations of entire system; that is, the equations of the BioZ electric model and the oscillator. From these equations and using the Describing Function method [ 20 ], two equations are obtained whose solutions allow us to derive the oscillation amplitude and frequency. The BioZ equations:

where

is the transfer function of the cell-electrode electrical model and the other parameters are defined by the resistances and the capacitors of the electric model (

and

), as can be seen on Equations (7)–(11).…”

Section: Methodsmentioning

confidence: 99%

“…The equations of entire system; that is, the equations of the BioZ electric model and the oscillator. From these equations and using the Describing Function method [ 20 ], two equations are obtained whose solutions allow us to derive the oscillation amplitude and frequency.…”

Section: Methodsmentioning

confidence: 99%

“…Equation (13) is the transfer function of a filter, composed of a low pass filter and a high pass filter, whose natural frequencies are

and

, respectively, and

and

are their respective quality factors. On the other hand,

in Equation (14), is the linearized transfer function of the comparator obtained from the Describing Function method [ 20 ]. In this equation,

is the reference voltage of the comparator, a osc is the oscillation amplitude of the input signal of the comparator, and h is a parameter that depends on the hysteresis of the comparator (which is configured through a feedback of passive components).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

An Empirical-Mathematical Approach for Calibration and Fitting Cell-Electrode Electrical Models in Bioimpedance Tests

Serrano

Huertas

Maldonado-Jacobi

et al. 2018

Sensors

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This paper proposes a new yet efficient method allowing a significant improvement in the on-line analysis of biological cell growing and evolution. The procedure is based on an empirical-mathematical approach for calibration and fitting of any cell-electrode electrical model. It is valid and can be extrapolated for any type of cellular line used in electrical cell-substrate impedance spectroscopy (ECIS) tests. Parameters of the bioimpedance model, acquired from ECIS experiments, vary for each cell line, which makes obtaining results difficult and—to some extent-renders them inaccurate. We propose a fitting method based on the cell line initial characterization, and carry out subsequent experiments with the same line to approach the percentage of well filling and the cell density (or cell number in the well). To perform our calibration technique, the so-called oscillation-based test (OBT) approach is employed for each cell density. Calibration results are validated by performing other experiments with different concentrations on the same cell line with the same measurement technique. Accordingly, a bioimpedance electrical model of each cell line is determined, which is valid for any further experiment and leading to a more precise electrical model of the electrode-cell system. Furthermore, the model parameters calculated can be also used by any other measurement techniques. Promising experimental outcomes for three different cell-lines have been achieved, supporting the usefulness of this technique.

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where

is the transfer function of the cell-electrode electrical model and the other parameters are defined by the resistances and the capacitors of the electric model (

and

), as can be seen on Equations (7)–(11).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Equation (13) is the transfer function of a filter, composed of a low pass filter and a high pass filter, whose natural frequencies are

and

, respectively, and

and

are their respective quality factors. On the other hand,

in Equation (14), is the linearized transfer function of the comparator obtained from the Describing Function method [ 20 ]. In this equation,

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

An Empirical-Mathematical Approach for Calibration and Fitting Cell-Electrode Electrical Models in Bioimpedance Tests

Serrano

Huertas

Maldonado-Jacobi

et al. 2018

Sensors

View full text Add to dashboard Cite

show abstract

“…To overcome these problems, several authors have proposed different Built-In-Self-Test (BIST) techniques where signals are internally generated and/or analysed [2][3][4][5][6][7][8]. Another possible and less expensive solution consists in using DFT techniques to internally transform the analogue signals into digital signals that are made controllable and observable from the chip I/Os [4,9,10,11,12]. So, only digital signals are externally handled by a non-expensive "digital" test equipment.…”

Section: Introductionmentioning

confidence: 99%

A novel DFT technique for testing complete sets of ADCs and DACs in complex SiPs

Kerzérho

Cauvet

Bernard³

et al. 2006

IEEE Des. Test. Comput.

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This paper proposes an original Design-For-Test (DFT) technique allowing the test of a complete set of converters embedded in a complex System-in-Package. The fundamental idea consists in implementing an additional circuitry allowing to interconnect the analogue ouputs of DAC's with the analogue inputs of ADC's. This globally results in an Analogue Network of interconnected Converters (ANC) that can be tested in a fully digital way. It is demonstrated that different configurations of the network can be described through a system of linearly independent equations. Solving the system of equations allows to determine the harmonic contribution of every converter in the network.

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“…1) using the oscillation-test strategy [1,5,6,7]. The test configuration and the feedback network were reported in [2].…”

Section: Bics Operationmentioning

confidence: 99%

A BICS for CMOS opamps by monitoring the supply current peak

Font

Ginard

Isern

et al.

Proceedings of the Eighth IEEE International on-Line Testing Workshop (IOLTW 2002)

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We present a Built-In-Current-Sensor (BICS) based on monitoring the supply current peak of CMOS opamps using the oscillation-test-strategy. The BICS takes a weighed sample of the current through each opamp current branch and monitors the peak value under oscillation. An envelope detector and additional digital circuitry is used to provide a pass/fail flag. Simulation results demonstrate a high defect coverage with a very small impact on the opamp nominal operation.

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Oscillation-Based Test Strategies

Cited by 4 publications

References 21 publications

An Empirical-Mathematical Approach for Calibration and Fitting Cell-Electrode Electrical Models in Bioimpedance Tests

An Empirical-Mathematical Approach for Calibration and Fitting Cell-Electrode Electrical Models in Bioimpedance Tests

A novel DFT technique for testing complete sets of ADCs and DACs in complex SiPs

A BICS for CMOS opamps by monitoring the supply current peak

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