Area-Efficient Decimation Filter with 50/60Hz Power-Line Noise Suppression for ΔΣ A/D Converters

Area-Efficient Decimation Filter with 50/60Hz Power-Line Noise Suppression for ΔΣ A/D Converters

This paper introduces a new digital filter utilizing a SINC filter used in ΔΣ A/D converters and featuring 50/60Hz 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 gate...

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Veröffentlicht in:SICE Journal of Control, Measurement, and System Integration Measurement, and System Integration, 2017, Vol.10(3), pp.165-169
Hauptverfasser: KURIBAYASHI, Hideki, KAJITA, Tetsuya
Format: Artikel
Sprache:eng
Schlagworte:
Analog to digital converters
Noise
Noise reduction
notch filter
Power lines
power-line noise
SINC filter
ΔΣ ADC
δσ adc
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Beschreibung
Zusammenfassung:This paper introduces a new digital filter utilizing a SINC filter used in ΔΣ A/D converters and featuring 50/60Hz 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 50Hz and 60Hz elements by approximately 55dB.
ISSN:1882-4889
1884-9970
DOI:10.9746/jcmsi.10.165