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AD8227ARMZ PDF预览

AD8227ARMZ

更新时间: 2024-02-08 10:16:02
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器放大器电路光电二极管PC
页数 文件大小 规格书
24页 521K
描述
Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier

AD8227ARMZ 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.65
放大器类型:INSTRUMENTATION AMPLIFIER最大平均偏置电流 (IIB):0.027 µA
标称带宽 (3dB):0.25 MHz最小共模抑制比:110 dB
最大输入失调电流 (IIO):0.0015 µA最大输入失调电压:100 µV
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:4.9 mm湿度敏感等级:1
负供电电压上限:-18 V标称负供电电压 (Vsup):-15 V
最大非线性:0.015%功能数量:1
端子数量:8最高工作温度:125 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):225电源:+-1.5/+-18/2.2/36 V
认证状态:Not Qualified座面最大高度:1.75 mm
标称压摆率:0.8 V/us子类别:Instrumentation Amplifier
最大压摆率:0.6 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:AUTOMOTIVE端子面层:MATTE TIN
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL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:5
宽度:3.9 mmBase Number Matches:1

AD8227ARMZ 数据手册

 浏览型号AD8227ARMZ的Datasheet PDF文件第18页浏览型号AD8227ARMZ的Datasheet PDF文件第19页浏览型号AD8227ARMZ的Datasheet PDF文件第20页浏览型号AD8227ARMZ的Datasheet PDF文件第21页浏览型号AD8227ARMZ的Datasheet PDF文件第22页浏览型号AD8227ARMZ的Datasheet PDF文件第24页 
AD8227  
Option 2 shows a circuit for driving higher frequency signals.  
It uses a precision op amp ꢁAD8616) with relatively high band-  
width and output drive. This amplifier can drive a resistor and  
capacitor with a much higher time constant and is, therefore,  
suited for higher frequency applications.  
DRIVING AN ADC  
Figure 66 shows several different methods for driving an ADC.  
The ADC in the ADuC7026 microcontroller was chosen for  
this example because it has an unbuffered charge sampling  
architecture that is typical of most modern ADCs. This type of  
architecture typically requires an RC buffer stage between the  
ADC and the amplifier to work correctly.  
Option 3 is useful for applications where the AD8227 needs to  
run off a large voltage supply but drives a single-supply ADC.  
In normal operation, the AD8227 output stays within the ADC  
range, and the AD8616 simply buffers it. However, in a fault  
condition, the output of the AD8227 may go outside the supply  
range of both the AD8616 and the ADC. This is not an issue in  
the circuit, because the 10 kΩ resistor between the two amplifiers  
limits the current into the AD8616 to a safe level.  
Option 1 shows the minimum configuration required to drive  
a charge sampling ADC. The capacitor provides charge to the  
ADC sampling capacitor, and the resistor shields the AD8227  
from the capacitance. To keep the AD8227 stable, the RC time  
constant of the resistor and capacitor needs to stay above 5 μs.  
This circuit is mainly useful for lower frequency signals.  
OPTION 1: DRIVING LOW FREQUENCY SIGNALS  
3.3V  
3.3V  
AV  
DD  
ADC0  
100Ω  
AD8227  
REF  
100nF  
ADuC7026  
OPTION 2: DRIVING HIGH FREQUENCY SIGNALS  
3.3V  
3.3V  
AD8227  
10Ω  
REF  
ADC1  
AD8616  
10nF  
OPTION 3: PROTECTING ADC FROM LARGE VOLTAGES  
+15V  
AD8227  
–15V  
3.3V  
10kΩ  
10Ω  
REF  
AD8616  
ADC2  
AGND  
10nF  
Figure 66. Driving an ADC  
Rev. 0 | Page 23 of 24  
 
 

AD8227ARMZ 替代型号

型号 品牌 替代类型 描述 数据表
AD8227ARMZ ADI

当前型号

Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
AD8227BRMZ-R7 ADI

类似代替

Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
AD8227BRMZ ADI

类似代替

Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
AD8227ARMZ-R7 ADI

类似代替

Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier

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