ZXF103 Datasheet, PDF (3/9 Pages) Zetex Semiconductors – VARIABLE Q FILTER

Filter Configurations and Responses
Notch Filter
ZXF103
AC Filter Performance
0
-8
-16
-24
-32
-40
10K
270
100K
1M
Frequency (Hz)
225
180
135
90
4510K
100K
1M
Frequency (Hz)
ISSUE 1 - APRIL 2002
10M
10M
3
1
Fo = _{2 πRC}
where R=R1=R2
and C=C1=C2
R4
Q ∝ _R3
where R1,R2,R3 and R4 ജ2kΩ
and C1 and C2 ജ 50pF
See “Designing for a value of Q”
for more details.