Published:2009/7/24 14:03:00 Author:Jessie | From:SeekIC
This circuit is an 8th-order 1-dB ripple Chebyshev bandpass, which functions as both an 1170-Hz originate filter, and a 2125-Hz answer filter. Only one clock is required, and overall gain is 22 dB. National Semiconductor, Linear Applications Handbook, 1991, p. 912.
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