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LM2902D Fiches technique(PDF) 8 Page - ON Semiconductor

No de pièce LM2902D
Description  Single Supply Quad Operational Amplifiers
PDF  12 Pages
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LM2902D Fiches technique(HTML) 8 Page - ON Semiconductor

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LM324, LM324A, LM224, LM2902, LM2902V, NCV2902
http://onsemi.com
8
2
1
For less than 10% error from operational amplifier,
If source impedance varies, filter may be preceded with
voltage follower buffer to stabilize filter parameters.
where fo and BW are expressed in Hz.
Qo fo
BW
< 0.1
Given:fo =center frequency
A(fo)=gain at center frequency
Choose value fo, C
Then:
R3 =
Q
π fo C
R3
R1 = 2 A(f
o)
R1 R3
4Q2 R1 - R3
R2 =
+
-
+
-
Vref =VCC
Vref
f =
R1 + RC
4 CRf R1
R3 =
R2 R1
R2 + R1
R2
300 k
75 k
R3
R1
100 k
C
Triangle Wave
Output
Square
Wave
Output
Vin
Rf
if
Vref
1/4
LM324
1/4
LM324
Figure 15. Function Generator
Figure 16. Multiple Feedback Bandpass Filter
Vref =VCC
1
2
-
+
VCC
R3
R1
R2
Vref
C
C
VO
CO = 10 C
CO
1/4
LM324



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