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MC3503P Datasheet(PDF) 7 Page - STMicroelectronics

Part No. MC3503P
Description  LOW POWER QUAD BIPOLAR OPERATIONAL AMPLIFIERS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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MC3503P Datasheet(HTML) 7 Page - STMicroelectronics

 
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MC3403
eo
V
CC
C
O
C
O
= 10C
C
R3
R2
R1
e I
V(ref)
V(ref)
1
2
V
CC
=
C
Given
fo = Center frequency ; choose values fo, C then
R3
=
Q
πfoC
A (fo) = Gain at center frequency
R1
=
R3
2A
( fo )
R2
=
R1 R5
4Q
2 R1
− R5•
For less than 10% error from operational amplifier
Qofo
BW
< 0.1 where fo and BW are expressed in Hz
If source impedance varies, filter may be preceded with voltage follower buffer to stabilize filter parameters
MULTIPLE FEEDBACK BANDPASS FILTER
1/4
MC3403
V(ref)
V(ref)
1
2
V
CC
=
Triangle wave output
C
1/4
MC3403
R2
300k
Square wave output
R3
75k
R1
100k
V(ref)
R1 + R2
4 CR R1
f =
f
if R3 =
R2 R1
R2 + R1
R f
APPLICATION INFORMATION (continued)
FUNCTION GENERATOR
MC3303 - MC3403 - MC3503
7/11


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