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INA116P

更新时间： 2024-01-03 09:06:11
品牌 Logo 应用领域
BB 仪表放大器放大器电路光电二极管
页数 文件大小 规格书
9页 248K
描述
Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER

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INA116P 技术参数

生命周期：TransferredReach Compliance Code：unknown
风险等级：5.73放大器类型：INSTRUMENTATION AMPLIFIER
标称带宽 (3dB)：0.8 MHz最小共模抑制比：80 dB
最大输入失调电压：4000 µVJESD-30 代码：R-PDSO-G16
负供电电压上限：-18 V标称负供电电压 (Vsup)：-15 V
最大非线性：0.005%功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified标称压摆率：0.8 V/us
供电电压上限：18 V标称供电电压 (Vsup)：15 V
表面贴装：YES温度等级：INDUSTRIAL
端子形式：GULL WING端子位置：DUAL
最大电压增益：1000最小电压增益：1
Base Number Matches：1

INA116P 数据手册

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The 50kΩ term in equation 1 is the sum of the two feedback  
resistors of A1 and A2. These on-chip metal film resistors are  
laser trimmed to accurate absolute values. The accuracy and  
temperature coefficient of these resistors are included in the  
gain accuracy and drift specifications of the INA116.  
APPLICATIONS INFORMATION  
Figure 1 shows the connections required for basic operation  
of the INA116. Applications with noisy or high impedance  
power supplies may require decoupling capacitors close to  
the supply pins as shown.  
The stability and temperature drift of RG also affect gain.  
RG’s contribution to gain accuracy and drift can be directly  
inferred from the gain equation (1). Low resistor values  
required for high gain make wiring resistance important.  
Sockets add to the wiring resistance that will contribute  
additional gain error in gains of approximately 100 or  
greater.  
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 30Ω in series with this connection will cause a  
typical device to degrade to approximately 72dB CMR at  
G = 1.  
SETTING THE GAIN  
OFFSET TRIMMING  
Gain of the INA116 is set by connecting a single external  
resistor, RG, as shown. The gain is—  
The INA116 is laser trimmed for low offset voltage and  
offset voltage drift; most applications require no external  
offset adjustment. Figure 2 shows an optional circuit for  
trimming the output offset voltage. A voltage applied to the  
Ref terminal is summed at the output. Op amp A1 provides  
a low source impedance for the Ref terminal, assuring good  
common-mode rejection.  
50kΩ  
G = 1+  
(1)  
RG  
Commonly used gains and resistor values are shown in  
Figure 1.  
V+  
0.1µF  
13  
4
INA116  
3
Over-Voltage  
Protection  
VI–N  
+1  
A1  
50kΩ  
RG  
2
1
G = 1 +  
R1  
60kΩ  
R2  
60kΩ  
RFB  
25kΩ  
Input Guards  
See Text.  
A3  
VO  
RG  
11  
16  
5
RFB  
25kΩ  
Ref  
A2  
6
7
Over-Voltage  
Protection  
9
VI+N  
R3  
60kΩ  
R4  
60kΩ  
+1  
8
0.1µF  
DESIRED  
GAIN  
RG  
(Ω)  
NEAREST 1% RG  
V–  
(Ω)  
1
2
5
10  
20  
50  
100  
200  
500  
1000  
2000  
5000  
10000  
NC  
NC  
49.9k  
12.4k  
5.62k  
2.61k  
1.02k  
511  
249  
100  
49.9  
24.9  
10  
50.00k  
12.50k  
5.556k  
2.632k  
1.02k  
505.1  
251.3  
100.2  
50.05  
25.01  
10.00  
5.001  
Also drawn in simplified form:  
–
VIN  
INA116  
Ref  
VO  
RG  
+
VIN  
4.99  
NC: No Connection.  
FIGURE 1. Basic Connections.  
®
7
INA116  
1...456789

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