: This paper introduces a new digital filter utilizing a SINC filter used in ΔΣ A/D converters and featuring 50/60 Hz power-line noise rejection. Compared with a simple series connection of the SINC filter and a noise suppression filter for the power-line, this digital filter reduces the number of gates by approximately 40% and enables the attenuation of 50 Hz and 60 Hz elements by approximately 55 dB.
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