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Measurement of Continuous-Time Σ ∆ Modulators: Implications of Using Spectrum Analyzer

By Ahmed Ashry, Ahmed K. El-shennawy, Mohammad Elbadry, Ayman Elsayed and Hassan Aboushady

Abstract

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 Σ ∆ 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 4 th order bandpass continuous-time Σ ∆ modulator

Topics: Fig. 1
Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.352.4893
Provided by: CiteSeerX
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