JAJSEY1C April 2019 – March 2022 ADC12DJ5200RF
Throughout the DDC, rounding and saturation is used. Samples are rounded to the nearest output code. If the sample is exactly between two output codes, it is rounded to the even output code (convergent rounding). This method introduces no bias or statistical DC offset to the rounded result.
In the FIR filters, rounding only occurs on the filter output. No intermediate rounding should be done.