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參數(shù)資料
| 型號(hào)： | OP413 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Noise, Low Drift Single-Supply Operational Amplifiers(低噪聲,低漂移,單電源運(yùn)算放大器) |
| 中文描述： | 低噪聲，低漂移單電源運(yùn)算放大器（低噪聲，低漂移，單電源運(yùn)算放大器） |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 438K |
| 代理商： | OP413 |
OP113/OP213/OP413
REV. B
–5–
OP213 Die Size 0.062 X 0.097 inch, 6,014 sq. mils.
Substrate (Die Backside) Is Connected to V+.
Transistor Count, 132.
OP413 Die Size 0.106 X 0.106 inch, 10,176 sq. mils.
Substrate (Die Backside) Is Connected to V+.
Transistor Count, 256.
APPLIC AT IONS
T he OP113, OP213 and OP413 form a new family of high
performance amplifiers that feature precision performance in
standard dual supply configurations, and, more importantly,
maintain precision performance when a single power supply is
used. In addition to accurate dc specifications, it is the lowest
noise single supply amplifier available with only 4.7 nV/
√
Hz
typical noise density.
Single supply applications have special requirements due to the
generally reduced dynamic range of the output signal. Single
supply applications are often operated at voltages of +5 volts or
+12 volts, compared to dual supply applications with supplies of
±
12 volts or
±
15 volts. T his results in reduced output swings.
Where a dual supply application may often have 20 volts of sig-
nal output swing, single supply applications are limited to at
most the supply range, and more commonly several volts below
the supply. In order to attain the greatest swing the single supply
output stage must swing closer to the supply rails than in dual
supply applications.
T he OP113 family has a new patented output stage that allows
the output to swing closer to ground, or the negative supply,
than previous bipolar output stages. Previous op amps had out-
puts that could swing to within about ten millivolts of the nega-
tive supply in single supply applications. However the OP113
family combines both a bipolar and a CMOS device in the out-
put stage, enabling it to swing to within a few hundred micro-
volts of ground.
When operating with reduced supply voltages, the input range is
also reduced. T his reduction in signal range results in reduced
signal-to-noise ratio, for any given amplifier. T here are only two
ways to improve this; increase the signal range or reduce the
noise. T he OP113 family addresses both of these parameters.
Input signal range is from the negative supply to within one volt of
the positive supply over the full supply range. Competitive parts
have input ranges that are a half a volt to five volts less than this.
Noise has also been optimized in the OP113 family. At 4.7 nV/
√
Hz
, it is less than one fourth that of competitive devices.
Phase Reversal
T he OP113 family is protected against phase reversal as long as
both of the inputs are within the supply ranges. However, if there
is a possibility of either input going below the negative supply
(or ground in the single supply case), then the inputs should be
protected with a series resistor to limit input current to 2 mA.
OP113 Offset Adjust
T he OP113 has the facility for external offset adjustment, using
the industry standard arrangement. Pins 1 and 5 are used in
conjunction with a potentiometer of 10 k
total resistance, con-
nected with the wiper to V– (or ground in single supply applica-
tions). T he total adjustment range is about
±
2 mV using this
configuration.
Adjusting the offset to zero has minimal effect on offset drift
(assuming the potentiometer has a tempco of less than 1000 ppm/
°
C). Adjustment away from zero, however, (like all bipolar am-
plifiers) will result in a T CV
OS
of approximately 3.3
μ
V/
°
C for
every millivolt of induced offset.
It is, therefore, not generally recommended that this trim be
used to compensate for system errors originating outside of the
OP113. T he initial offset of the OP113 is low enough that
external trimming is almost never required, but if necessary, the
2 mV trim range may be somewhat excessive. Reducing the
trimming potentiometer to a 2 k
value will give a more reason-
able range of
±
400
μ
V.
7
4
5
6
1/2
OP-213
R1
17.2k
0.1%
OUTPUT
0
→
10V
F.S.
350
LOAD
CELL
8
1
2
3
+15V
+10.000V
2N2219A
R5
1k
1
2
4
AD588BD
16
14
15
8
10
6
11 12 13
9
3
–15V
7
10μF
CMRR TRIM
10-TURN
T.C. LESS THAN 50PPM/°C
–15V
R1
301
0.1%
R3
17.2k
0.1%
R4
500
+10.000V
100mV
FS
A2
1/2
OP-213
A1
Figure 1. Precision Load Cell Scale Amplifier
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OP113 | Low Noise, Low Drift Single-Supply Operational Amplifiers(低噪聲,低漂移,單電源運(yùn)算放大器) |
| OP213 | Low Noise, Low Drift Single-Supply Operational Amplifiers(低噪聲,低漂移,單電源運(yùn)算放大器) |
| OP450 | CMOS Single-Supply Rail-to-Rail Input/Output Operational Amplifiers |
| OP450GRU | CMOS Single-Supply Rail-to-Rail Input/Output Operational Amplifiers |
| OP450GS | CMOS Single-Supply Rail-to-Rail Input/Output Operational Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OP413ARC/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OP413AY/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OP413BY/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| OP413EP | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Noise, Low Drift Single-Supply Operational Amplifiers |
| OP413ES | 制造商:Analog Devices 功能描述:OP Amp Quad GP 制造商:Rochester Electronics LLC 功能描述:QUAD LO-NOISE LO-DRIFT IC - Bulk 制造商:Analog Devices 功能描述:IC OP-AMP LOW NOISE |
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