Published:2009/7/7 19:58:00 Author:May | From:SeekIC
DG508 eight-channel CMOS multiplexer is used in comb filter having fundamental frequency of 1 kHz. Sampling action provides response at each harmonic multiple except at 8 and 16 kHz (no response at Nf0 or 2Nf0). Used in selective filtering of periodic signals from background of nonperiodic noise interference, 7493 TTL binary counter provides necessary 3-bit binary count sequence from 8-kHz clock. Q is 50.- Analog Switches and Their Applications, Siliconix, Santa Clara, CA, 1976, p 5-17-5-18.
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