The performance of oversampled sigma delta modulators can be predicted by modeling of the quantization errors as additive white noise. The theoretically achievable performance depends on several parameters such as the oversampling ratio, the order of the loop filter and the resolution of the quantizer. Deterministic effects such as pattern noise and dead zones, as well as a non-ideal implementation affect the actual performance of an SDM.
KeywordsQuantization Noise High Order Modulator Loop Filter Input Amplitude Sigma Delta Modulator
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