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參數(shù)資料
| 型號(hào)： | INA155U |
| 元件分類： | 測(cè)量放大器 |
| 英文描述： | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| 中文描述： | 單電源，軌至軌，低成本儀表放大器 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 140K |
| 代理商： | INA155U |
9
INA155
APPLICATIONS INFORMATION
Figure 1 shows the basic connections required for operation
of the INA155. Applications with noisy or high impedance
power supplies may require decoupling capacitors close to
the device pins as shown.
The output is referred to the output reference terminal, Ref,
which is normally set to V
S
/2. This must be a low-imped-
ance connection to ensure good common-mode rejection. A
resistance of 200
in series with the Ref pin will cause a
typical device to degrade to approximately 80dB CMRR.
In addition, for the G = 50 configuration, the connection
between pins 1 and 8 must be low-impedance. A connection
impedance of 20
can cause a 0.2% shift in gain error.
OPERATING VOLTAGE
The INA155 is fully specified and guaranteed over the supply
range +2.7V to +5.5V, with key parameters guaranteed over
the temperature range of –55
°
C to +125
°
C. Parameters that
vary significantly with operating voltages, load conditions or
temperature are shown in the Typical Performance Curves.
The INA155 can be operated from either single or dual
power supplies. By adjusting the voltage applied to the
reference terminal, the input common-mode voltage range
and the output range can be adjusted within the bounds
shown in the Typical Performance Curves. Figure 2 shows
a bridge amplifier circuit operated from a single +5V power
supply. The bridge provides a relatively small differential
voltage on top of an input common-mode voltage near 2.5V.
FIGURE 1. Basic Connections.
FIGURE 2. Single-Supply Bridge Amplifier.
Bridge
Sensor
INA155
V
REF(1)
+5V
3
2
4
5
7
6
V
OUT
= 0.01V to 4.99V
(2)
NOTES: (1) V
should be adjusted for the desired output level,
keeping in mind that the value of V
affects the common-mode
input range. See Typical Performance Curve. (2) For best
performance, the common-mode input voltage should be kept away
from the transition range of (V+) – 1.8V to (V+) –0.8V.
1
8
V
IN
+
V
IN
–
Ref
22.2k
200k
5k
Gain Pins Open:
G = 10
External Resistor R
G
:
10 < G < 50
Gain Pins Connected:
G = 50
5k
200k
22.2k
4
3
2
5
7
1
8
V–
0.1
μ
F
Dual Supply
Single Supply
Also drawn in simplified form:
V+
INA155
INA155
6
1
3
8
2
V
OUT
6
7
4
5
Ref
0.1
μ
F
V+
V–
DESIRED GAIN
(V/V)
R
G
(
)
10
20
30
40
50
Open
30k
10k
3.3k
Short
G = 10 +
400k
10k
+ R
G
V
IN
–
V
IN
+
A1
A2
V
IN
+
V
IN
–
V
OUT
= (V
IN
– V
IN
) G + V
REF
+
–
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|---|---|
| INA155EA | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| INA155UA | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| INA156 | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| INA156A | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| INA156E | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA155U/2K5 | 功能描述:儀表放大器 Single-Sply R-to-R Output CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補(bǔ)償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| INA155U/2K5G4 | 功能描述:儀表放大器 Single-Sply R-to-R Output CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補(bǔ)償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| INA155U2K5 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single-Supply, Rail-to-Rail Output, CMOS INSTRUMENTATION AMPLIFIER |
| INA155U2K5G4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single-Supply, Rail-to-Rail Output, CMOS INSTRUMENTATION AMPLIFIER |
| INA155UA | 功能描述:儀表放大器 Single-Sply R-to-R Output CMOS RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補(bǔ)償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
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