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Sigma Delta A/D Converter SamplerModulator Decimation Filter x(t) x[n]y[n] Analog Digital fsfs fsfs 2 f o 16 bits e[n] Over Sampling Ratio = 2f o is Nyquist. - ppt download
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A scalable decimation filter ASIC for high resolution digital magnetometer with sigma-delta modulator feedback loop - ScienceDirect
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