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參數(shù)資料
| 型號： | 5962-8872101PA |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運算放大器 |
| 英文描述： | DUAL OP-AMP, 175 uV OFFSET-MAX, 5 MHz BAND WIDTH, CDIP8 |
| 封裝： | HERMETIC SEALED, CERDIP-8 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 1708K |
| 代理商： | 5962-8872101PA |
REV. B
OP270
–10–
RS – SOURCE RESISTANCE ( )
100
1k
10k
100k
TOT
A
L
N
O
ISE
–
nV/
Hz
1
10
RESISTOR
NOISE ONLY
OP200
OP270
Figure 4. Total Noise vs Source Resistance (In-
cluding Resistor Noise) at 10Hz
RS – SOURCE RESISTANCE ( )
1000
100
1k
10k
100k
PEAK-T
O-PEAK
NOISE
–
nV
10
100
RESISTOR
NOISE ONLY
OP200
OP270
Figure 5. Peak-To-Peak Noise (0.1Hz To 10Hz)
vs Source Resistance (Includes Resistor Noise)
Figure 5 shows peak-to-peak noise versus source resistance over the
0.1 Hz to 10Hz range. Once again, at low values of RS, the voltage
noise of the OP270 is the major contributor to peak-to-peak
noise with current noise the major contributor as RS increases.
The crossover point between the OP270 and the OP200 for
peak-to-peak noise is at RS =17 k
W.
The OP271 is a higher speed version of the OP270, with a slew
rate of 8V/
ms. Noise of the OP271 is slightly higher than the
OP270. Like the OP270, the OP271 is unity-gain stable.
For reference, typical source resistances of some signal sources
are listed in Table I.
TABLE I
SOURCE
DEVICE
IMPEDANCE
COMMENTS
Strain gauge
<500
W
Typically used in low
frequency applications.
Magnetic
<1500
W
Low IB very important to
tapehead,
reduce self-magnetization
microphone
problems when direct
coupling is used. OP270 IB
can be neglected.
Magnetic
<1500
W
Similar need for low IB in
phonograph
direct coupled applications.
cartridge
OP270 will not introduce any
self-magnetization problem.
Linear variable <1500
W
Used in rugged servo-feedback
differential
applications. Bandwidth of
transformer
interest is 400 Hz to 5 kHz.
For further information regarding noise calculations, see “Minimi-
zation of Noise in Op-Amp Applications”, Application Note AN15.
R1
5
R2
5
OP270
DUT
–
+
R3
1.24k
OP27E
–
+
R4
200
R5
909
C1
2 F
R6
600
R8
10k
D1, D2
1N4148
OP27E
–
+
R9
306k
C2
0.032 F
R10
65.4k
R11
65.4k
C4
0.22 F
C3
0.22 F
OP42E
–
+
R12
10k
R13
5.9k
R14
4.99k
C5
1 F
eOUT
GAIN = 50,000
VS = 15V
Figure 6. Peak-To-Peak Voltage Noise Test Circuit (0.1 Hz To 10Hz)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 5962-8872101V2A | 制造商:Analog Devices 功能描述:DUAL,LOW-NOISE IC - Rail/Tube |
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| 5962-88724013A | 制造商:Atmel Corporation 功能描述:SMD MKD AT22V10L-25LM/883 |
| 59628872401LA | 制造商:ATMEL 功能描述:New |
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