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ADC resolution

Question asked by yan_ucom on Sep 3, 2016
Latest reply on Sep 6, 2016 by Vinod

In AGC section of UG, it mentions that the ADC is a sigma-delta ADC. I wonder if there is a minimal over-sampling ratio requirement to guarantee the 12-bit resolution. I understand that the maximal oversampling ratio is 48 which is decided by DEC3/HB2/HB1/FIR (3x2x2x4). Then, for a fixed final sampling rate, does higher oversampling ratio give an advantage to quantization noise?