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MF5CN Datasheet, PDF (6/16 Pages) National Semiconductor (TI) – MF5 Universal Monolithic Switched Capacitor Filter
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1 0 Definition of Terms (Continued)
TL H 5066–11
(a)
(b)
FIGURE 4 2nd-Order Notch Response
HN(s)
e
HON(s2 a 0o2)
s2
a
s0o
Q
a
0o2
Q e fo
fH b fL
fo e 0fLfH
 0  J J b1
fL e fo
a
2Q
12
a1
2Q
 0  J J 1
fH e fo
a
2Q
12
a1
2Q
TL H 5066 – 12
 J HOAP
s2
b
s0o
Q
a
0o2
HAP(s) e
s2
a
s0o
Q
a
0o2
TL H 5066–13
(a)
(b)
FIGURE 5 2nd-Order All-Pass Response
TL H 5066 – 14
(a) Bandpass
(b) Low-Pass
(c) High-Pass
(d) Notch
(e) All-Pass
FIGURE 6 Responses of various 2nd-order filters
as a function of Q Gains and center frequencies
are normalized to unity
6
TL H 5066 – 15
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