參數(shù)資料
型號(hào)： ML2111
廠商： Fairchild Semiconductor Corporation
英文描述： Universal Dual High Frequency Filter(通用雙通道高頻濾波器)
中文描述： 通用雙高頻濾波器（通用雙通道高頻濾波器）
文件頁(yè)數(shù)： 22/26頁(yè)
文件大?。?/td> 440K
代理商： ML2111
ML2111
22
Figure 33. Cascading Two Sections in Mode 1d, Each with Q =1, (Independent of Resistor Ratios) to Create a Sharper 4th
Order Lowpass Filter.
Figure 34. Notch Filter with Q = 50 and f
0
= 130kHz. This Circuit Uses Side A in Mode 1d and the Side B Op Amp to
Create a Notch Whose Depth is Controlled by R31. The Notch is Created by Subtracting the Bandpass from V
IN
. The
Bandpass of Side A is Subtracted Using the Op Amp of Side B.
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
LP
A
BP
A
HP
A
INV
A
S1
A
S
A/B
V
A
+
V
D
+
LSh
CLK
A
LP
B
BP
B
HP
B
INV
B
S1
B
AGND
V
A
-
V
D
-
50/100
CLK
B
R11
R21
R12
R22
V
IN
1V
p-p
5V
Clock 7.51MHz
5V
-5V
V
OUT
RESISTOR VALUES
R11 = R21 = R12 = R22 = 2.0k
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
LP
A
BP
A
HP
A
INV
A
S1
A
S
A/B
V
A
+
V
D
+
LSh
CLK
A
LP
B
BP
B
HP
B
INV
B
S1
B
AGND
V
A
-
V
D
-
50/100
CLK
B
R31
R24
R32
R21
V
IN
2.82V
p-p
5V
Clock 6.5MHz
5V
-5V
V
OUT
1% RESISTOR VALUES
R21 = R22 = R23 = R24 = 2k
R31 = 80k
R32 = 4.9k
R34 = 100
R22
R23
R34
10
0
–10
–20
–30
–40
3–50
–60
–70
V
O
/
I
FREQUENCY (Hz)
10k
100k
1M
166,224Hz
–3.121dB
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
V
O
/
I
FREQUENCY (kHz)
127
133
130
129,070Hz
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