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Noise Diodes Randomize Quantization Errors in A/D Converters

ABSTRACT: An A/D converter’s finite resolution produces quantization errors as the analog input is partitioned into 2n discrete ranges during an n-bit conversion. All analog values within a given range are represented by the same digital code, which is assigned the midrange value. This produces an inherent quantization uncertainty of ±1/2 LSB in addition to the actual conversion errors.