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Conference Papers Year : 2010

Measurement of continuous-time ΣΔ modulators: Implications of using spectrum analyzer

Ahmed Ashry
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Ahmed K. El-Shennawy
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Mohammad Elbadry
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Ayman Elsayed
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Abstract

In this paper, The difference between getting the output spectrum directly using spectrum analyzer and obtaining the spectrum digitally in measuring clock jitter effect on continuous-time ΣΔ modulator is analyzed. It is shown that clock jitter can be seen as input-referred or output-referred, depending on the nature of the measurement tool. Quantization noise and jitter noise are analyzed and compared graphically using a simple approach. The presented analysis is verified with system-level simulation of a 4th order bandpass continuous-time ΣΔ modulator.

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Electronics
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Dates and versions

hal-00574516 , version 1 (08-03-2011)

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Ahmed Ashry, Ahmed K. El-Shennawy, Mohammad Elbadry, Ayman Elsayed, Hassan Aboushady. Measurement of continuous-time ΣΔ modulators: Implications of using spectrum analyzer. IEEE International Conference on Microelectronics (ICM'10), Dec 2010, Cairo, Egypt. pp.9-12, ⟨10.1109/ICM.2010.5696216⟩. ⟨hal-00574516⟩
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