SigmaDeltaWandlung
SigmaDeltaWandlung, also known as Sigma-Delta modulation or Sigma-Delta conversion, is a method used in signal processing to convert analog signals to digital form (and, in some variants, to realize digital-to-analog conversion). The approach achieves high resolution by oversampling the input signal and shaping the quantization noise away from the band of interest.
The core concept involves an oversampled feedback loop in which a loop filter, often consisting of one
Architectures vary from first-order to higher-order designs. A single integrator defines a first-order sigma-delta, while two
Applications are widespread in electronics, especially in audio ADCs, instrumentation, and communication systems. SigmaDeltaWandlung enables high
Historically, sigma-delta techniques emerged in the 1960s and 1970s and have since become mainstream due to