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LM324A ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 9 Page - ON Semiconductor

๋ถ€ํ’ˆ๋ช… LM324A
์ƒ์„ธ๋‚ด์šฉ  Single Supply Quad Operational Amplifiers
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์ œ์กฐ์‚ฌ  ONSEMI [ON Semiconductor]
ํ™ˆํŽ˜์ด์ง€  http://www.onsemi.com
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LM324A ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 9 Page - ON Semiconductor

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LM324, LM324A, LM324E, LM224, LM2902, LM2902E, LM2902V, NCV2902
www.onsemi.com
9
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
p fo C
R3
R1 =
2 A(fo)
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 16. Function Generator
Figure 17. 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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