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AD524S PDF预览

AD524S

更新时间: 2024-01-22 14:37:36
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器
页数 文件大小 规格书
16页 395K
描述
Precision Instrumentation Amplifier

AD524S 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:QLCC包装说明:LCC-20
针数:20Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.31.00.01
风险等级:5.67Is Samacsys:N
放大器类型:INSTRUMENTATION AMPLIFIER最大平均偏置电流 (IIB):0.05 µA
标称带宽 (3dB):1 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:100 µV
JESD-30 代码:S-CQCC-N20JESD-609代码:e0
长度:8.89 mm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:20
最高工作温度:125 °C最低工作温度:-55 °C
封装主体材料:CERAMIC, METAL-SEALED COFIRED封装代码:QCCN
封装等效代码:LCC20,.35SQ封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):NOT SPECIFIED
电源:+-15 V认证状态:Not Qualified
座面最大高度:2.54 mm标称压摆率:0.1 V/us
子类别:Instrumentation Amplifier最大压摆率:5 mA
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:MILITARY
端子面层:Tin/Lead (Sn/Pb)端子形式:NO LEAD
端子节距:1.27 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED最大电压增益:1000
最小电压增益:1标称电压增益:1000
宽度:8.89 mmBase Number Matches:1

AD524S 数据手册

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AD524  
ERROR BUDGET ANALYSIS  
In many applications, differential linearity and resolution are of  
prime importance. This would be so in cases where the absolute  
value of a variable is less important than changes in value. In  
these applications, only the irreducible errors (45 ppm = 0.004%)  
are significant. Furthermore, if a system has an intelligent pro-  
cessor monitoring the A-to-D output, the addition of a auto-  
gain/autozero cycle will remove all reducible errors and may  
eliminate the requirement for initial calibration. This will also  
reduce errors to 0.004%.  
To illustrate how instrumentation amplifier specifications are  
applied, we will now examine a typical case where an AD524 is  
required to amplify the output of an unbalanced transducer.  
Figure 46 shows a differential transducer, unbalanced by 100 ,  
supplying a 0 to 20 mV signal to an AD524C. The output of the  
IA feeds a 14-bit A-to-D converter with a 0 to 2 volt input volt-  
age range. The operating temperature range is –25°C to +85°C.  
Therefore, the largest change in temperature T within the  
operating range is from ambient to +85°C (85°C – 25°C = 60°C).  
+V  
S
+10V  
10k⍀  
350⍀  
350⍀  
350⍀  
350⍀  
RG  
1
14-BIT  
ADC  
0V TO 2V  
F.S.  
G = 100  
AD524C  
RG  
2
–V  
S
Figure 46. Typical Bridge Application  
Table II. Error Budget Analysis of AD524CD in Bridge Application  
Effect on  
Absolute  
Accuracy  
Effect on  
Absolute  
Accuracy  
Effect  
on  
AD524C  
Error Source  
Specifications Calculation  
at TA = +25؇C at TA = +85؇C Resolution  
Gain Error  
Gain Instability  
Gain Nonlinearity  
Input Offset Voltage  
Input Offset Voltage Drift  
±0.25%  
25 ppm  
±0.003%  
±50 µV, RTI  
±0.5 µV/°C  
±0.25% = 2500 ppm  
(25 ppm/°C)(60°C) = 1500 ppm  
±0.003% = 30 ppm  
2500 ppm  
2500 ppm  
1500 ppm  
30 ppm  
±50 µV/20 mV = ±2500 ppm  
(±0.5 µV/°C)(60°C) = 30 µV  
30 µV/20 mV = 1500 ppm  
±2.0 mV/20 mV = 1000 ppm  
(±25 µV/°C)(60°C)= 1500 µV  
1500 µV/20 mV = 750 ppm  
(±15 nA)(100 ) = 1.5 µV  
1.5 µV/20 mV = 75 ppm  
(±100 pA/°C)(100 )(60°C) = 0.6 µV  
0.6 µV/20 mV= 30 ppm  
(±10 nA)(100 ) = 1 µV  
1 µV/20 mV = 50 ppm  
(100 pA/°C)(100 )(60°C) = 0.6 µV  
0.6 µV/20 mV = 30 ppm  
2500 ppm  
2500 ppm  
1500 ppm  
1000 ppm  
Output Offset Voltage*  
Output Offset Voltage Drift* ±25 µV/°C  
±2.0 mV  
1000 ppm  
750 ppm  
75 ppm  
30 ppm  
50 ppm  
30 ppm  
87.5 ppm  
50 ppm  
444 ppm  
Bias Current-Source  
Imbalance Error  
Bias Current-Source  
Imbalance Drift  
Offset Current-Source  
Imbalance Error  
Offset Current-Source  
Imbalance Drift  
Offset Current-Source  
Resistance-Error  
Offset Current-Source  
Resistance-Drift  
Common Mode Rejection  
5 V dc  
±15 nA  
75 ppm  
±100 pA/°C  
±10 nA  
50 ppm  
±100 pA/°C  
±10 nA  
(10 nA)(175 ) = 3.5 µV  
3.5 µV/20 mV = 87.5 ppm  
(100 pA/°C)(175 )(60°C) = 1 µV  
1 µV/20 mV = 50 ppm  
115 dB = 1.8 ppm × 5 V = 8.8 µV  
8.8 µV/20 mV = 444 ppm  
87.5 ppm  
±100 pA/°C  
115 dB  
444 ppm  
Noise, RTI  
(0.1 Hz–10 Hz)  
0.3 µV p-p  
0.3 µV p-p/20 mV = 15 ppm  
15 ppm  
45 ppm  
Total Error  
6656.5 ppm  
10516.5 ppm  
*Output offset voltage and output offset voltage drift are given as RTI figures.  
–14–  
REV. E  

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