Characterization of a High-Resolution Analog-to-Digital Converter With a Josephson AC Voltage Source

Ihlenfeld, W. G. Kurten; Mohns, E.; Behr, R.; Williams, Jonathan M. J.; Patel, P.; Ramm, G.; Bachmair, Hans

doi:10.1109/tim.2004.843064

Cited by 44 publications

(17 citation statements)

References 8 publications

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“…A visual comparison of the agreement between the points and the ellipse offers qualitative support for the model of a gain error and an exponential settling time. The plot does not support a model dominated by hysteresis, as has been proposed elsewhere [12]. Hysteresis would result in a rectangular rather than an elliptical figure and our data show no evidence of this.…”

Section: Initial Results and Simple Interpretationcontrasting

confidence: 68%

“…In contrast to previous work [12], employing a triangular waveform, the piecewise sinusoid used here has the advantage that the discrete Fourier transform (DFT) can be readily interpreted to extract gain error and settling time and exclude differential nonlinearity (DNL), the deviation between two analogue values corresponding to adjacent digital values .…”

Section: Initial Results and Simple Interpretationmentioning

confidence: 99%

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Application of a Josephson quantum voltage source to the measurement of microsecond timescale settling time on the Agilent 3458A 8$\frac{1}{2}$ digit voltmeter

Henderson

Williams

Yamada

2012

Meas. Sci. Technol.

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The voltage waveform measurement characteristics due to finite settling time on the microsecond timescale are investigated for the Agilent 3458A 8 digit voltmeter in DCV mode. A quantum-accurate voltage synthesizer based on the Josephson effect produces a change in test voltage in less than 1 μs and the voltage reported by the voltmeter is measured as a function of two timing parameters, aperture delay and duration. A model is presented and the level of agreement is discussed in the context of optimizing the configuration of the instrument for both high measurement throughput and accuracy.

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Section: Initial Results and Simple Interpretationcontrasting

confidence: 68%

Section: Initial Results and Simple Interpretationmentioning

confidence: 99%

Application of a Josephson quantum voltage source to the measurement of microsecond timescale settling time on the Agilent 3458A 8$\frac{1}{2}$ digit voltmeter

Henderson

Williams

Yamada

2012

Meas. Sci. Technol.

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“…The use of multiple ADCs working in parallel with the same master clock may allow noise reduction even further, as the use of numerical signal processing to improve accuracy. It is envisaged to conduct detailed ADCcharacterization with low-distortion waveforms (singletone and multi-tone) in order examine the characterizations against the PTB Josephson waveform synthesizer JWS [6]- [8]. Further developments and detailed measurement results will be presented at the conference.…”

Section: Further Improvements and Measurementsmentioning

confidence: 99%

A sampling system based on Σ–Δ analog-to-digital converters

Iuzzolino

Ihlenfeld

Brendel³

et al. 2008

2008 Conference on Precision Electromagnetic Measurements Digest

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This paper describes advances in the hardware design of a system for characterizing and investigating highresolution sigma-delta analog-to-digital converters. This work is being done in the frame of a Ph.D. study program in electrical engineering at the TU-BS, focusing the characterization and modeling of such converters with the help of sinusoidal and the PTB Josephson waveform synthesizers. An effective resolution of 18-19 bits at a sampling rate of 64 kHz has been attained.

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“…For example, the PJVS is used to generate an accurate quantum dc voltage for measuring the induced voltage of a coil that is moving at a constant velocity in the dynamic phase measurement of the watt balance [4][5][6][7][8]. Moreover, it is also used to synthesize stepwise-approximated waveforms [3] in quantum power standard calibration [9], dynamic behavior characterization of analog to digital converters (ADCs) [10], fast-reversed dc comparison [11,12], and high-accuracy ac-dc difference measurement [13,14].…”

Section: Introductionmentioning

confidence: 99%

Precision square waves synthesized by programmable Josephson voltage standards for induced voltage compensation in a Joule balance

Wang

Zhang

et al. 2015

Meas. Sci. Technol.

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A programmable Josephson voltage standard (PJVS) can be used to generate a precision square wave for induced voltage compensation to measure the mutual inductance between the coils in a joule balance. In this paper, the influence of the transitions between quantized voltages in the synthesized square waves is analyzed in detail. The ratio of the time-integrated value of the transitions to the total waveform is reduced to several parts in 104 to improve the measurement accuracy. The influence of different configurations of the integrating digitizer is discussed. The result shows that when the voltages are in a quantum state, the time-integrated agreement between the measured and theoretical differences for two PJVS systems is within 4 × 10−9 V s V−1 s−1. For the total time integration of a voltage waveform larger than 2 V s, the combined relative uncertainty is less than 5.9 × 10−8 V s V−1 s−1. The result confirms the capability of the PJVS to generate a precision square wave for the joule balance.

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Characterization of a High-Resolution Analog-to-Digital Converter With a Josephson AC Voltage Source

Cited by 44 publications

References 8 publications

Application of a Josephson quantum voltage source to the measurement of microsecond timescale settling time on the Agilent 3458A 8$\frac{1}{2}$ digit voltmeter

Application of a Josephson quantum voltage source to the measurement of microsecond timescale settling time on the Agilent 3458A 8$\frac{1}{2}$ digit voltmeter

A sampling system based on Σ–Δ analog-to-digital converters

Precision square waves synthesized by programmable Josephson voltage standards for induced voltage compensation in a Joule balance

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