参数资料
型号: SC224NG
厂商: ON Semiconductor
文件页数: 14/14页
文件大小: 0K
描述: IC OP AMP QUAD LOW PWR 14-DIP
标准包装: 500
电流 - 输入偏压: 3nA
电压 - 输入偏移: 2000µV
电压 - 电源,单路/双路(±): 3 V ~ 32 V,±1.5 V ~ 16 V
安装类型: 通孔
封装/外壳: 14-DIP(0.300",7.62mm)
供应商设备封装: 14-PDIP
包装: 管件
LM324, LM324A, LM224, LM2902, LM2902V, NCV2902
http://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
VO
CO = 10 C
CO
1/4
LM324
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