LCI
Newbie level 5
What is the overloading point of a double loop 2nd 3-level SDM overloading point?
In my simulation, it seem to be 90% of full scale (≈-1dB). But many paper say a double loop 2nd SDM only have 70% (≈-3dB). It this correct to use the Vref reference as the SDM Full scale? or we need to reference the SDM Full Scale to the quantizer overload region (e.g. 3 level: 1.5*vref)?
In my simulation, it seem to be 90% of full scale (≈-1dB). But many paper say a double loop 2nd SDM only have 70% (≈-3dB). It this correct to use the Vref reference as the SDM Full scale? or we need to reference the SDM Full Scale to the quantizer overload region (e.g. 3 level: 1.5*vref)?