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Certain applications do not allow for feedback in delta-sigma converters due to circuit topologies and/or practical problems inherent to feedback loops. As a result, this paper presents the analysis and implementation of a digital microphone utilizing a feed-forward only sigma delta A/D converter comprising of a Schmitt trigger, capacitor and sampling D-FF to digitize data. The system is analyzed...
As negative feedback in control systems is often not applicable and/or produces undesirable effects, this paper presents an analysis and simulation of a finite impulse response (FIR) sigma delta A/D converter comprising of a voltage controlled oscillator (VCO) and D-flip-flop to digitize data. The FIR sigma delta modulator (SDM) is analyzed in terms of performance and simulation results are given...
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