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參數(shù)資料
| 型號(hào)： | LM148 |
| 廠商： | RAYTHEON SEMICONDUCTOR |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Low Power Quad 741 Operational Amplifier(低功耗、四通道741型運(yùn)算放大器) |
| 中文描述： | QUAD OP-AMP, 6000 uV OFFSET-MAX, 1 MHz BAND WIDTH, PDIP14 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 97K |
| 代理商： | LM148 |
PRODUCT SPECIFICATION
LM148
11
Applications Discussion
(continued)
Figure 26. 3 Amplifier Bi-Quad Notch Filter
Figure 27. 4th Order 1 KHz Elliptic Filter (4 Poles, 4 Zeros)
65-148-28
LM148
A
OUT(S)
V
IN(S)
V
R6
R8
R2
C2
R7
R3
R4
R1
C1
Q =
R8
R7
R1C1
R3C2R2C1
Fo =
1
2
p
R8
R7
1
R2R3C1C2
F
NOTCH=
1
2
p
R6
R3R5R7C1C2
Necessary condition for notch :
1
R6
=
R1
R4R7
Examples: F
NOTCH
= 3 kHz, Q = 5, R1 = 270K, R2 = R3 = 20K, R4 = 27K, R5 = 20K, R6 = R8 = 10K, R7 = 100K.
C1 = C2 = 0.001
μ
F.
Better noise performance than the state-space approach.
,
,
LM148
B
LM148
C
3
2
1
6
5
7
9
10
8
R5
65-148-29
LM148
A
LM148
C
LM148
D
IN
H
L
F
OUT
V
V
R3
R6
R0
R4
R'6
R'0
R'4
R'1
R'5
H
R
R1
R
L
R'
R'2
C'2
R'
R'
100K
C2
R2
R5
100K
C1
F (Hz)
A
V
0
-10
-20
-30
-40
-50
-60
-70
100
1K
10K
100K
Gain vs Frequency
F = 1 kHz, F = 2 kHz, F = 0.543. F = 2.14, Q = 0.841, F' = 0.987, F' = 4.92.
Q' = 4.403 normalized to ripple BW.
F =
1
2
p
R6
R5
1
t
, F =
1
2
p
R
R
H
L
1
t
, Q =
1 + R4/R3 + R4/R0
1 + R6/R5
R6
R5
, Q' =
R'6
R'5
x
1 + R'4/R'0
1 + R'6/R'5 + R'6/R
P
S
P
P
L
L
R
=
R R
R + R
Use the B'P outputs to tune Q, Q', tune the 2 sections separately.
R1 = R2 = 92.6K, R3 = R4 = R5 = 100K, R6 = 10K, R0 = 107.8K, R = 100K, R = 155.1K,
R'1 = R'2 = 50.9K, R'4 = R'5 = 100K, R'6 = 10K, R'0 = 5.78K, R' = 100K, R' = 248.12K,
All capacitors are 0.001
μ
F.
C'1
BP'
BP
R' = 100K.
LM148
B
LM148
A
3
2
1
3
2
1
LM148
B
LM148
C
5
6
7
10
9
8
12
13
14
10
9
8
5
6
7
x
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM148 MD8 | 制造商:Texas Instruments 功能描述:QUAD 741 OP AMP DIE - Gel-pak, waffle pack, wafer, diced wafer on film |
| LM148/883 | 制造商:National Semiconductor Corporation 功能描述: 制造商:Texas Instruments 功能描述: |
| LM148_02 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD BIPOLAR OPERATIONAL AMPLIFIERS |
| LM148_06 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE OPERATIONAL AMPLIFIERS |
| LM148D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:FOUR UA741 QUAD BIPOLAR OPERATIONAL AMPLIFIERS |
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