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To create a 24 dB bandpass filter with
voltage-controlled middle frequency and
bandwidth, put both filters in series (see the
A-122 user examples). For voltage control of
middle frequency and bandwidth, follow the
relevant notch filter instructions. (see Fig. 5).
Fig. 5:
Effect of FCV and BCV on the band pass
filter response.
System A - 100
FCV
BCV
f
Freq.
M
A-123
VCF 4
7