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| 型号： | OP4177ARZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 1.3MHZ QUAD 14SOIC |
| 标准包装： | 1,000 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 转换速率： | 0.7 V/µs |
| 增益带宽积： | 1.3MHz |
| 电流 - 输入偏压： | 500pA |
| 电压 - 输入偏移： | 15µV |
| 电流 - 电源： | 400µA |
| 电流 - 输出 / 通道： | 10mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 36 V，±2.5 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 带卷 (TR) |
OP1177/OP2177/OP4177
Rev. G | Page 20 of 24
0
26
27
-0
65
200
500
4.37k
100
20
4.12k
5k
49.9k
ADR421
+15V
0.1F
V+
100
RTD
1/2
OP2177
7
6
5
1/2
OP2177
1
8
2
3
4
V–
VOUT
where δ = ΔR/R is the fractional deviation of the RTD resistance
with respect to the bridge resistance due to the change in temper-
ature at the RTD.
For δ << 1, the preceding expression becomes
δ
+
+
=
+
δ
REF
O
V
R2
R1
R2
R1
R
R2
R1
R
R1
V
R
R2
V
1
With VREF constant, the output voltage is linearly proportional
to δ with a gain factor of
+
+
R2
R1
R2
R1
R
R2
V
REF
1
0
2627
-0
66
R
R(1+δ)
ADR421
15V
0.1F
OP1177
6
7
4
2
3
V+
V–
RF
VOUT
Figure 65. Low Power Linearized RTD Circuit
SINGLE OPERATIONAL AMPLIFIER BRIDGE
The low input offset voltage drift of the OP1177 makes it very
effective for bridge amplifier circuits used in RTD signal condi-
tioning. It is often more economical to use a single bridge
operational amplifier as opposed to an instrumentation amplifier.
In the circuit shown in Figure 66, the output voltage at the
operational amplifier is
Figure 66. Single Bridge Amplifier
()
δ
+
+
+
δ
=
1
R2
R1
R
R1
V
R
R2
V
REF
O
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP4177ARZ-REEL71 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Low Noise, Low Input Bias Current Operational Amplifiers |
| OP41AJ | 制造商:AD 制造商全称:Analog Devices 功能描述:Low-Bias-Current, High-Stability JFET Operational Amplifier |
| OP-41AJ | 制造商:AD 制造商全称:Analog Devices 功能描述:LOW-BIAS-CURRENT, HIGH-STABILITY JFET OPERATIONAL AMPLIFIER |
| OP41AJ/883C | 制造商:Analog Devices 功能描述: |
| OP41BIFJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Operational Amplifier |
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