July 2017
Beginner
484 pages
13h 26m
English
Content preview from Op Amps for Everyone, 5th Edition
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16.5. Band-Pass Filter Design
In Section 16.4, a high-pass response was generated by replacing the term S in the low-pass transfer function with the transformation 1/S. Likewise, a band-pass characteristic is generated by replacing the S term with the transformation:
(16.7)In this case, the passband characteristic of a low-pass filter is transformed into the upper passband half of a band-pass filter. The upper passband is then mirrored at the mid frequency, fm (Ω = 1), into the lower passband half (See Fig. 16.31).
The corner frequency of the low-pass filter transforms to the lower and upper −3 dB frequencies of the band-pass, Ω1 and Ω
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