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MC3403 Single Supply Quad Operational Amplifiers ON-Semiconductor
ON Semiconductor ON-Semiconductor
MC3403 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
MC3403, MC3303
R
R
C1
R2
Vin
For: fo = 1.0 kHz
Q = 10
TBP = 1
TN = 1
C
1/2
MC3403
+
C
1/2
MC3403
+
Vref
100 k
Vref
R2
Bandpass
R1 Output
Where: TBP = center frequency gain
TN = passband notch gain
R3
1/2
MC3403
+
Vref
Figure 13. BiQuad Filter
100 k
1/2
MC3403
+
Vref
C1
fo =
1
2pRC
R1 = QR
R2 = R1
TBP
R3 = TNR2
C1 = 10 C
Vref =
1
2
VCC
R = 160 kW
C = 0.001 mF
R1 = 1.6 MW
R2 = 1.6 MW
R3 = 1.6 MW
Notch Output
Vref =
1
2
VCC
Triangle Wave
Vref
Output
+
1/2
R3
MC3403
75 k
R1
100 k
C
Vref
Rf
f=
R1 +RC
4 CRf R1
if
R3 =
R2 R1
R2 +R1
R2
300 k
+
1/2
MC3403
Figure 14. Function Generator
VCC
C
R3
R1
C
Vin
1/2
MC3403
R2
+
CO
VO
CO = 10 C
Square Wave
Output
Given:
Vref
fo = center frequency
A(fo) = gain at center frequency
Vref =
1
2
VCC
Choose value fo, C
Then: R3 = Q
p fo C
R1 = R3
2 A(fo)
R2 =
R1 R5
4Q2 R1 −R5
For less than 10% error from operational amplifier
where fo and BW are expressed in Hz.
Oo fo
BW
< 0.1
If source impedance varies, filter may be preceded with
voltage follower buffer to stabilize filter parameters.
Figure 15. Multiple Feedback Bandpass Filter
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