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參數(shù)資料
| 型號(hào)： | INA141 |
| 元件分類(lèi)： | 測(cè)量放大器 |
| 英文描述： | Precision, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER |
| 中文描述： | 精密低功耗G \u003d 10，100款儀表放大器 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大小： | 190K |
| 代理商： | INA141 |
INA141
8
APPLICATION INFORMATION
Figure 1 shows the basic connections required for operation
of the INA141. 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 (Ref) terminal
which is normally grounded. This must be a low-impedance
connection to assure good common-mode rejection. A resis-
tance of 8
in series with the Ref pin will cause a typical
device to degrade to approximately 80dB CMR (G = 1).
SETTING THE GAIN
Gain is selected with a jumper connection as shown in
Figure 1. G = 10V/V with no jumper installed. With a
jumper installed, G = 100V/V. To preserve good gain
accuracy, this jumper must have low series resistance. A
resistance of 0.5
in series with the jumper will decrease the
gain by 0.1%.
Internal resistor ratios are laser trimmed to assure excellent
gain accuracy. Actual resistor values can vary by approxi-
mately
±
25% from the nominal values shown.
Gains between 10 and 100 can be achieved by connecting an
external resistor to the jumper pins. This is not recom-
mended, however, because the
±
25% variation of internal
resistor values makes the required external resistor value
uncertain. A companion model, INA128, features accurately
trimmed internal resistors so that gains from 1 to 10,000 can
be set with an external resistor.
DYNAMIC PERFORMANCE
The typical performance curve “Gain vs Frequency” shows
that, despite its low quiescent current, the INA141 achieves
wide bandwidth, even at G = 100. This is due to the current-
feedback topology of the INA141. Settling time also re-
mains excellent at G = 100.
NOISE PERFORMANCE
The INA141 provides very low noise in most applications.
Low frequency noise is approximately 0.2
μ
Vp-p measured
from 0.1 to 10Hz (G = 100). This provides dramatically
improved noise when compared to state-of-the-art chopper-
stabilized amplifiers.
FIGURE 1. Basic Connections.
A
1
A
2
A
3
6
40k
40k
40k
40k
7
4
3
8
1
2
V
IN
V
IN
V+
V–
INA141
–
+
5
Ref
Over-Voltage
Protection
25k
25k
Over-Voltage
Protection
Load
V
O
= G (V
IN
– V
IN
)
+
–
0.1μF
0.1μF
+
–
V
O
Also drawn in simplified form:
INA141
Ref
V
O
V
IN
–
V
IN
+
G = 10
(no connection)
or
G = 100
(connect jumper)
252
5050
252
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| INA141P | Precision, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER |
| INA141PA | Precision, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER |
| INA141U | Precision, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER |
| INA141UA | Precision, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER |
| INA145 | Programmable Gain DIFFERENCE AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA141P | 制造商:Texas Instruments 功能描述: |
| INA141PA | 制造商:Rochester Electronics LLC 功能描述:8 LD. PDIP INST. AMP - Bulk |
| INA141U | 功能描述:儀表放大器 Precision Lo-Power G = 10 100 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 |
| INA141U | 制造商:Texas Instruments 功能描述:IC AMP INSTRUMENTATION SOIC8 141 |
| INA141U/2K5 | 功能描述:儀表放大器 Precision Lo-Power G = 10 100 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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