Integrated switched-capacitor low-pass filter with combined anti-aliasing decimation filter for low frequencies
1982; Institute of Electrical and Electronics Engineers; Volume: 17; Issue: 6 Linguagem: Inglês
10.1109/jssc.1982.1051856
ISSN1558-173X
AutoresD.C. von Grungen, R.P. Sigg, M. Ludwig, U.W. Brugger, G.S. Moschytz, H. Melchior,
Tópico(s)Advanced Adaptive Filtering Techniques
ResumoA 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.
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