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AD8571ARM-REEL

更新时间： 2024-02-02 20:43:43
品牌 Logo 应用领域
亚德诺 - ADI 运算放大器
页数 文件大小 规格书
24页 452K
描述
Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers

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AD8571ARM-REEL 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknown风险等级：5.25
放大器类型：OPERATIONAL AMPLIFIER最大平均偏置电流 (IIB)：0.0015 µA
标称共模抑制比：130 dB最大输入失调电压：10 µV
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
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
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260座面最大高度：1.75 mm
标称压摆率：0.4 V/us子类别：Operational Amplifier
供电电压上限：6 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：CMOS
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：40
标称均一增益带宽：1500 kHz宽度：3.9 mm
Base Number Matches：1

AD8571ARM-REEL 数据手册

 浏览型号AD8571ARM-REEL的Datasheet PDF文件第16页浏览型号AD8571ARM-REEL的Datasheet PDF文件第17页浏览型号AD8571ARM-REEL的Datasheet PDF文件第18页浏览型号AD8571ARM-REEL的Datasheet PDF文件第20页浏览型号AD8571ARM-REEL的Datasheet PDF文件第21页浏览型号AD8571ARM-REEL的Datasheet PDF文件第22页 
AD8571/AD8572/AD8574  
CAPACITIVE LOAD DRIVE  
Table 5. Snubber Network Values for Driving Capacitive Loads  
The AD857x has excellent capacitive load driving capabilities  
and can safely drive up to 10 nF from a single 5 V supply.  
Although the device is stable, capacitive loading limits the  
bandwidth of the amplifier. Capacitive loads also increase the  
amount of overshoot and ringing at the output. An RC snubber  
network, shown in Figure 59, can be used to compensate the  
amplifier against capacitive load ringing and overshoot.  
CLOAD  
Rx  
Cx  
1 nF  
4.7 nF  
10 nF  
200 Ω  
60 Ω  
20 Ω  
1 nF  
0.47 μF  
10 μF  
POWER-UP BEHAVIOR  
On power-up, the AD857x settles to a valid output within  
5 ꢀs. Figure 61 shows an oscilloscope photo of the output of the  
amplifier along with the power supply voltage, and Figure 62  
shows the test circuit. With the amplifier configured for unity  
gain, the device takes approximately 5 ꢀs to settle to its final  
output voltage, hundreds of microseconds faster than many  
other autocorrection amplifiers.  
5V  
AD8571/  
AD8572/  
–
AD8574  
V
OUT  
Rx  
60Ω  
V
IN  
+
C
L
200mV p-p  
4.7nF  
Cx  
0.47µF  
Figure 59. Snubber Network Configuration for Driving Capacitive Loads  
Although the snubber does not recover the loss of amplifier  
bandwidth from the load capacitance, it does allow the amplifier  
to drive larger values of capacitance while maintaining a  
minimum of overshoot and ringing. Figure 60 shows the output  
of an AD857x driving a 1 nF capacitor with and without a  
snubber network.  
V
OUT  
0V  
V+  
0V  
10μs  
WITH  
SNUBBER  
5µs  
1V  
BOTTOM TRACE = 2V/DIV  
TOP TRACE = 1V/DIV  
Figure 61. AD857x Output Behavior on Power-Up  
WITHOUT  
SNUBBER  
V
= 0V TO 5V  
SY  
100kΩ  
100kΩ  
V
= 5V  
LOAD  
S
100mV  
C
= 4.7nF  
V
OUT  
AD8571/  
AD8572/  
AD8574  
Figure 60. Overshoot and Ringing are Substantially  
Reduced Using a Snubber Network  
Figure 62. AD857x Test Circuit for Turn-On Time  
The optimum value for the resistor and capacitor is a function  
of the load capacitance and is best determined empirically since  
actual CLOAD includes stray capacitances and can differ substan-  
tially from the nominal capacitive load. Table 5 shows some  
snubber network values that can be used as starting points.  
Rev. B | Page 19 of 24  
 
 
 
 
 
 
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