ZXF103Q16 Zetex Semiconductors, ZXF103Q16 Datasheet - Page 5

• Manufacturer Part Number: ZXF103Q16
• Description: VARIABLE Q FILTER
• Manufacturer: Zetex Semiconductors

AC Filter Performance
ISSUE 1 - APRIL 2002
Filter Configurations and Responses (Continued)
Inverse Notch Filter (with attenuating skirts)
-10
-20
-180
-270
-360
-450
-540
30
20
10
-90
0
10K
10K
100K
Frequency (Hz)
100K
Frequency (Hz)
1M
1M
5
10M
10M
Fo
Q
where R=R1=R2
and
where R1,R2,R3 and R4
and C1 and C2
See “Designing for a value of Q”
for more details.
The skirt ‘roll off’ away from the
peak is -20dB/Decade regardless
of chosed Q.
Typical responses from the
circuit with component values
derived from the diagram.
2 RC
R4
R3
C=C1=C2
1
50pF
ZXF103
2k