Integrated switched-capacitor low-pass filter with combined anti-aliasing decimation filter for low frequencies

Integrated switched-capacitor low-pass filter with combined anti-aliasing decimation filter for low frequencies

A new combined antialiasing decimation filter is presented which allows the implementation of a low-frequency switched-capacitor filter on a single chip. Experimental results are presented for a CMOS second-order low-pass filter with 1 dB passband ripple, a cutoff frequency of 2 Hz, and a dynamic ra...

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Veröffentlicht in:IEEE journal of solid-state circuits 1982-12, Vol.17 (6), p.1024-1029
Hauptverfasser: von Grungen, D.C., Sigg, R., Ludwig, M., Brugger, U.W., Moschytz, G.S., Melchior, H.
Format: Artikel
Sprache:eng
Schlagworte:
Active filters
Band pass filters
Capacitors
Circuits
Clocks
Frequency
Low pass filters
Passband
Resistors
Sampling methods
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Beschreibung
Zusammenfassung:A new combined antialiasing decimation filter is presented which allows the implementation of a low-frequency switched-capacitor filter on a single chip. Experimental results are presented for a CMOS second-order low-pass filter with 1 dB passband ripple, a cutoff frequency of 2 Hz, and a dynamic range of 84 dB. The decimation filter converts the input clock of 16 kHz into an output clock of 250 Hz. The integrated anti-aliasing filter has a low pole frequency of about 3 kHz.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.1982.1051856