Datasheet

MC3303 - MC3403 - MC3503
7/10
MULTIPLE FEEDBACK BANDPASS FILTER
TYPICAL PERFORMANCE CURVES
1/4
MC3403
e
o
V
CC
C
O
C
O
= 10C
C
R3
R2
R1
e
I
V
(ref)
V
(ref)
1
2
V
CC
=
C
Given f = center frequency ; chosse valuesf,Cthan
A (f ) = gain at center frequency
For less than 10% error from operational amplifier
QF
BW
If source impedance varies, filter may be preceded with voltage
follower buffer to stabilize filter parameters
o o
o
oo
< 0.1 where f and BW are expressed in Hz
o
R3 =
R1 =
R2 =
Q
fCp
o
R3
2A (f )
o
R1 R5
4Q R1-R5
2