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INA117KU PDF预览

INA117KU

更新时间: 2024-01-27 12:21:47
品牌 Logo 应用领域
德州仪器 - TI 运算放大器放大器电路光电二极管
页数 文件大小 规格书
17页 312K
描述
High Common-Mode Voltage DIFFERENCE AMPLIFIER

INA117KU 技术参数

生命周期:Obsolete包装说明:GREEN, METAL, TO-99, 8 PIN
Reach Compliance Code:unknown风险等级:5.66
Is Samacsys:N放大器类型:OPERATIONAL AMPLIFIER
标称共模抑制比:80 dB最大输入失调电压:1000 µV
JESD-30 代码:O-MBCY-W8JESD-609代码:e4
功能数量:1端子数量:8
最高工作温度:125 °C最低工作温度:-55 °C
封装主体材料:METAL封装代码:TO-99
封装形状:ROUND封装形式:CYLINDRICAL
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
标称压摆率:2.6 V/us供电电压上限:22 V
标称供电电压 (Vsup):15 V表面贴装:NO
温度等级:MILITARY端子面层:GOLD
端子形式:WIRE端子位置:BOTTOM
处于峰值回流温度下的最长时间:NOT SPECIFIEDBase Number Matches:1

INA117KU 数据手册

 浏览型号INA117KU的Datasheet PDF文件第3页浏览型号INA117KU的Datasheet PDF文件第4页浏览型号INA117KU的Datasheet PDF文件第5页浏览型号INA117KU的Datasheet PDF文件第7页浏览型号INA117KU的Datasheet PDF文件第8页浏览型号INA117KU的Datasheet PDF文件第9页 
APPLICATION INFORMATION  
Figure 1 shows the basic connections required for operation.  
V–  
V+  
Applications with noisy or high-impedance power-supply lines  
may require decoupling capacitors close to the device pins.  
4
7
380kΩ  
380kΩ  
380kΩ  
The output voltage is equal to the differential input volt-  
age between pins 2 and 3. The common mode input  
voltage is rejected.  
2
3
V2  
6
Internal circuitry connected to the compensation pin 8 can-  
cels the parasitic distributed capacitance between the feed-  
back resistor, R2, and the IC substrate. For specified dy-  
namic performance, pin 8 should be grounded or connected  
through a 0.1µF capacitor to an AC ground such as V+.  
VO = V3 V2  
V3  
21.1kΩ  
20kΩ  
+15V  
8
1
5
100kΩ  
15V  
+15V  
50kΩ  
±1.5mV  
Range  
15V  
(a)  
10Ω  
1µF  
Tantalum  
1µF  
Tantalum  
4
R1  
7
R2  
380kΩ  
V–  
V+  
380kΩ  
2
3
4
7
In = V2  
380kΩ  
380kΩ  
R3  
2
3
6
380kΩ  
V2  
VO = V3 V2  
+In = V3  
6
380kΩ  
R5  
R4  
20kΩ  
V
= V V  
O
3
2
21.1kΩ  
V3  
8
1
5
V+  
21.1kΩ  
20kΩ  
100µA  
1/2 REF200  
8
1
5
FIGURE 1. Basic Power and Signal Connections.  
100Ω  
100Ω  
COMMON-MODE REJECTION  
±10mV  
OPA27  
(b)  
Common-mode rejection (CMR) of the INA117 is depend-  
ent on the input resistor network, which is laser-trimmed for  
accurate ratio matching. To maintain high CMR, it is impor-  
tant to have low source impedances driving the two inputs.  
A 75resistance in series with pin 2 or 3 will decrease CMR  
from 86dB to 72dB.  
10kΩ  
Offset adjustment is regulated—  
insensitive to power supply variations.  
100µA  
1/2 REF200  
Resistance in series with the reference pins will also degrade  
CMR. A 4resistance in series with pin 1 or 5 will decrease  
CMRR from 86dB to 72dB.  
V–  
Most applications do not require trimming. Figures 2 and 3  
show optional circuits that may be used for trimming offset  
voltage and common-mode rejection.  
FIGURE 2. Offset Voltage Trim Circuits.  
Some applications, however, apply voltages to the reference  
terminals (pins 1 and 5). A more complete transfer function  
is:  
TRANSFER FUNCTION  
Most applications use the INA117 as a simple unity-gain  
difference amplifier. The transfer function is:  
VO = V3 – V2 + 19 • V5 – 18 • V1  
V5 and V1 are the voltages at pins 5 and 1.  
VO = V3 – V2  
V3 and V2 are the voltages at pins 3 and 2.  
INA117  
6
SBOS154A  

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