Influence of the oscillation frequency value on the efficiency of oscillation-based tests

Arbet, Daniel; Stopjaková, Viera

doi:10.1109/ae.2014.7011657

Cited by 1 publication

(2 citation statements)

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“…By opening the switch S 1 and closing the switch S 2 , the filter network will be converted into an oscillator. The characteristic equation of the resulting oscillator can be described as: (15) Where oscillation parameter b is given by:…”

Section: 1tow-thomas Filter To Bandpass Oscillatormentioning

confidence: 99%

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Oscillation-Based DFT for Second-Order Bandpass OTA-C Filters

Hasan

Yanqing

Sun

2017

Circuits Syst Signal Process

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This paper describes a design for testability technique for second-order bandpass operational transconductance amplifier and capacitor filters using an oscillation-based test topology. The oscillation-based test structure is a vectorless output test strategy easily extendable to built-in self-test. The proposed methodology converts filter under test into a quadrature oscillator using very simple techniques and measures the output frequency. Using feedback loops with nonlinear block, the filter-to-oscillator conversion techniques easily convert the bandpass OTA-C filter into an oscillator. With a minimum number of extra components, the proposed scheme requires a negligible area overhead. The validity of the proposed method has been verified using comparison between faulty and faultfree simulation results of Tow-Thomas and KHN OTA-C filters. Simulation results in 0.25μm CMOS technology show that the proposed oscillation-based test strategy for OTA-C filters is suitable for catastrophic and parametric faults testing and also effective in detecting single and multiple faults with high fault coverage.

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Section: 1tow-thomas Filter To Bandpass Oscillatormentioning

confidence: 99%

“…In the external tester, the oscillation is achieved by an external feedback loop network which is normally implemented as part of a dedicated tester. The OBT technique has been applied to various kinds of analogue and mixed-signal circuits [6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%