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Realization of Cascade of Resonators with Distributed Feed-Back Sigma-Delta
Linköping University, Department of Electrical Engineering.
Linköping University, Department of Electrical Engineering.
2009 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The Sigma Delta Modulator (SDM) based analog to digital conversion is cost effective and have the advantages as higher reliability, increased functionality, and reduction in chip cost.

The thesis work includes the modeling of SDM with the signal flow graph in Matlab, optimization of the coefficients to improve the noise transfer function and signal transfer function. A procedure to find the maximum stable input range for the design. Scaling the inputs of the integrator so that the maximum output signal can be obtained according to the operational transconductance amplifier (OTA) output range. Further we derived error bound for the design. Then step by step realization of the SDM form the signal flow graph (SFG) to a fully differential switched-capacitor (SC) network is shown. The work also includes complete differential transistor level realization for 3-bit flash analog to digital converter (ADC), thermometric to binary encoder, a switch-capacitor digital to analog converter (DAC) circuit and an on-chip circuit realization of the non-overlapping clock generation circuitry.

Place, publisher, year, edition, pages
2009. , 64 p.
Keyword [en]
sigma-delta modulator, operational transconductance amplfier, analog to digital converter, digital to analog converter, signal flow graph
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-20289ISRN: LiTH-ISY-EX--09/4314--SEOAI: diva2:233769
Subject / course
Electronics Systems
2009-08-14, Nolstallet, Linkoping university, Linkoping, 10:00 (English)
Available from: 2009-09-03 Created: 2009-09-02 Last updated: 2011-07-08Bibliographically approved

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Saleem, JawadMalik, Abdul Mateen
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