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AD625JN

更新时间： 2024-02-21 05:32:22
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER 放大器光电二极管
页数 文件大小 规格书
16页 1146K
描述
INSTRUMENTATION AMPLIFIER, 200uV OFFSET-MAX, 0.65MHz BAND WIDTH, PDIP16, PLASTIC, DIP-16

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中文翻译

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AD625JN 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：DIP
包装说明：PLASTIC, DIP-16针数：16
Reach Compliance Code：unknown风险等级：5.68
放大器类型：INSTRUMENTATION AMPLIFIER最大平均偏置电流 (IIB)：0.05 µA
标称带宽 (3dB)：0.65 MHz最小共模抑制比：70 dB
最大输入失调电流 (IIO)：0.035 µA最大输入失调电压：200 µV
JESD-30 代码：R-PDIP-T16JESD-609代码：e0
长度：19.055 mm湿度敏感等级：NOT APPLICABLE
负供电电压上限：-18 V标称负供电电压 (Vsup)：-15 V
最大非线性：0.01%功能数量：1
端子数量：16最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT APPLICABLE
认证状态：COMMERCIAL座面最大高度：4.32 mm
标称压摆率：5 V/us子类别：Instrumentation Amplifier
供电电压上限：18 V标称供电电压 (Vsup)：15 V
表面贴装：NO温度等级：COMMERCIAL
端子面层：TIN LEAD端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT APPLICABLE最大电压增益：10000
最小电压增益：1标称电压增益：10
宽度：7.62 mmBase Number Matches：1

AD625JN 数据手册

 浏览型号AD625JN的Datasheet PDF文件第7页浏览型号AD625JN的Datasheet PDF文件第8页浏览型号AD625JN的Datasheet PDF文件第9页浏览型号AD625JN的Datasheet PDF文件第11页浏览型号AD625JN的Datasheet PDF文件第12页浏览型号AD625JN的Datasheet PDF文件第13页 
AD625  
RTO NOISE  
RTO OFFSET VOLTAGE  
Any resistors in series with the inputs of the AD625 will degrade  
the noise performance. For this reason the circuit in Figure 26b  
should be used if the gains are all greater than 5. For gains less  
than 5, either the circuit in Figure 26a or in Figure 26c can be  
used. The two 1.4 kΩ resistors in Figure 26a will degrade the  
noise performance to:  
300  
200  
100  
3
2
4kTRext +(4 nV/ Hz)2 = 7.9 nV/ Hz  
10k 20k 30k 40k 50k 60k  
10k 20k 30k 40k 50k 60k  
FEEDBACK RESISTANCE – ꢀ  
FEEDBACK RESISTANCE – ꢀ  
RESISTOR PROGRAMMABLE GAIN AMPLIFIER  
In the resistor-programmed mode (Figure 27), only three exter-  
nal resistors are needed to select any gain from 1 to 10,000.  
Depending on the application, discrete components or a  
pretrimmed network can be used. The gain accuracy and gain  
TC are primarily determined by the external resistors since the  
AD625C contributes less than 0.02% to gain error and under  
5 ppm/°C gain TC. The gain sense current is insensitive to  
common-mode voltage, making the CMRR of the resistor pro-  
grammed AD625 independent of the match of the two feedback  
resistors, RF.  
RTO OFFSET VOLTAGE DRIFT  
6
BANDWIDTH  
1M  
10kꢀ  
5
4
3
2
100k  
10k  
20kꢀ  
50kꢀ  
1
10k 20k 30k 40k 50k 60k  
FEEDBACK RESISTANCE – ꢀ  
1
10  
100  
1k  
FEEDBACK RESISTANCE – ꢀ  
Selecting Resistor Values  
Figure 28. RTO Noise, Offset, Drift and Bandwidth vs.  
Feedback Resistance Normalized to 20 kΩ  
As previously stated each RF provides feedback to the input  
stage and sets the unity gain transconductance. These feedback  
resistors are provided by the user. The AD625 is tested and  
specified with a value of 20 kΩ for RF. Since the magnitude of  
RTO errors increases with increasing feedback resistance, values  
much above 20 kΩ are not recommended (values below 10 kΩ  
for RF may lead to instability). Refer to the graph of RTO noise,  
offset, drift, and bandwidth (Figure 28) when selecting the  
feedback resistors. The gain resistor (RG) is determined by the  
formula RG = 2 RF/(G – l).  
Table I. Common Gains Nominally Within ꢃ0.5% Error  
Using Standard 1% Resistors  
GAIN  
RF  
RG  
1
2
5
10  
20  
20 kΩ  
∞
19.6 kΩ  
20 kΩ  
39.2 kΩ  
10 kΩ  
4.42 kΩ  
2.1 kΩ  
806 Ω  
402 Ω  
205 Ω  
78.7 Ω  
39.2 Ω  
13.3 kΩ  
5.62 kΩ  
2.67 kΩ  
1.27 kΩ  
634 Ω  
316 Ω  
154 Ω  
76.8 Ω  
38.3 Ω  
20 kΩ  
20 kΩ  
19.6 kΩ  
20 kΩ  
2R  
F
G =  
+1  
R
G
50  
R
F
R
R
F
G
+INPUT  
–INPUT  
100  
200  
500  
1000  
4
8
16  
32  
64  
128  
256  
512  
1024  
20.5 kΩ  
19.6 kΩ  
19.6 kΩ  
20 kΩ  
1
16  
+GAIN  
SENSE  
–GAIN  
SENSE  
2
3
4
5
6
7
8
15  
14  
13  
12  
11  
10  
9
RTI NULL  
+V  
RTO  
NULL  
S
19.6 kΩ  
20 kΩ  
RTO  
NULL  
RTI NULL  
A1  
A2  
+GAIN DRIVE  
–GAIN DRIVE  
19.6 kΩ  
20 kΩ  
NC  
10kꢀ  
10kꢀ  
V
OUT  
REF  
20 kΩ  
10kꢀ  
10kꢀ  
A3  
19.6 kΩ  
19.6 kΩ  
19.6 kΩ  
+V  
S
–V  
S
AD625  
Figure 27. AD625 in Fixed Gain Configuration  
A list of standard resistors which can be used to set some com-  
mon gains is shown in Table I.  
SENSE TERMINAL  
The sense terminal is the feedback point for the AD625 output  
amplifier. Normally it is connected directly to the output. If  
heavy load currents are to be drawn through long leads, voltage  
drops through lead resistance can cause errors. In these in-  
stances the sense terminal can be wired to the load thus putting  
For single gain applications, only one offset null adjust is neces-  
sary; in these cases the RTI null should be used.  
REV. D  
–9–  
1...78910111213...16

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