參數(shù)資料
型號： OP470FY
廠商： PRECISION MONOLITHICS INC
元件分類： 運動控制電子
英文描述： Very Low Noise Quad Operational Amplifier
中文描述： QUAD OP-AMP, 1000 uV OFFSET-MAX, 6 MHz BAND WIDTH, CDIP14
封裝： HERMETIC SEALED, DIP-14
文件頁數(shù)： 10/16頁
文件大小： 687K
代理商： OP470FY
REV. A
OP470
–10–
Figure 6 shows peak-to-peak noise versus source resistance over
the 0.1 Hz to 10 Hz range. Once again, at low values of R
S
, the
voltage noise of the OP470 is the major contributor to peak-to-peak
noise with current noise the major contributor as R
S
increases.
The crossover point between the OP470 and the OP400 for
peak-to-peak noise is at R
S
= 17 k
W
.
The OP471 is a higher speed version of the OP470, with a slew
rate of 8 V/
m
s. Noise of the OP471 is only slightly higher than
the OP470. Like the OP470, the OP471 is unity-gain stable.
RS – SOURCE RESISTANCE –
1000
10
100
100k
P
100
10k
1k
OP11
OP400
OP471
OP470
RESISTOR
NOISE ONLY
Figure 6. Peak-To-Peak Noise (0.1 Hz to 10 Hz) vs. Source
Resistance (Includes Resistor Noise)
For reference, typical source resistances of some signal sources
are listed in Table I.
R1
5
R3
1.24k
OP470
DUT
R2
5
R5
909
OP27E
R4
200
C1
2 F
R6
600k
R9
306k
OP15E
R8
10k
D1
1N4148
D2
1N4148
C2
0.032 F
R10
65.4k
R11
65.4k
C3
0.22 F
OP15E
C4
0.22 F
R13
5.9k
R12
10k
R14
4.99k
C5
1 F
e
OUT
GAIN = 50,000
V
S
= 5V
Figure 7. Peak-To-Peak Voltage Noise Test Circuit (0.1 Hz to 10 Hz)
TABLE I.
Device
Impedance
<500
W
Source
Comments
Strain gauge
Typically used in
low frequency applications.
Magnetic
tapehead
<1500
W
Low I
B
very important to reduce
self-magnetization problems
when direct coupling is used.
OP470 I
B
can be neglected.
Similar need for low I
B
in direct
coupled applications. OP470
will not introduce any self-
magnetization problem.
Magnetic
phonograph
cartridges
<1500
W
Linear variable <1500
W
differential
transformer
Used in rugged servo-feedback
applications. Bandwidth of
interest is 400 Hz to 5 kHz.
For further information regarding noise calculations, see “Minimization of Noise
in Op Amp Applications,” Application Note AN-15.
NOISE MEASUREMENTS—
PEAK-TO-PEAK VOLTAGE NOISE
The circuit of Figure 7 is a test setup for measuring peak-to-peak
voltage noise. To measure the 200 nV peak-to-peak noise speci-
fication of the OP470 in the 0.1 Hz to 10 Hz range, the following
precautions must be observed:
1. The device must be warmed up for at least five minutes. As
shown in the warm-up drift curve, the offset voltage typi-
cally changes 5
m
V due to increasing chip temperature after
power-up. In the 10-second measurement interval, these
temperature-induced effects can exceed tens of nanovolts.
2. For similar reasons, the device must be well-shielded from
air currents. Shielding also minimizes thermocouple effects.
3. Sudden motion in the vicinity of the device can also “feedthrough”
to increase the observed noise.
相關(guān)PDF資料
PDF描述
OP470 Very Low Noise Quad Operational Amplifier
OP470AY Very Low Noise Quad Operational Amplifier
OP470EY Very Low Noise Quad Operational Amplifier
OP470GP Very Low Noise Quad Operational Amplifier
OP470GS Very Low Noise Quad Operational Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
OP-470FY 制造商:AD 制造商全稱:Analog Devices 功能描述:VERY LOW NOISE QUAD OPERATIONAL AMPLIFIER
OP470G 制造商:Analog Devices 功能描述:
OP-470G 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Low Noise, Precision Operational Amplifiers
OP470GN 功能描述:IC PREC OPAMP LO NOIS QUAD 14DIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:13 V/µs 增益帶寬積:3MHz -3db帶寬:- 電流 - 輸入偏壓:65pA 電壓 - 輸入偏移:3000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件
OP-470GN 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Low Noise, Precision Operational Amplifiers
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