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AD8073JRZ PDF预览

AD8073JRZ

更新时间： 2024-01-05 23:06:44
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER 放大器PC光电二极管商用集成电路
页数 文件大小 规格书
13页 861K
描述
3 CHANNEL, VIDEO AMPLIFIER, PDSO14, SOIC-14

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中文翻译

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AD8073JRZ 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：14
Reach Compliance Code：unknown风险等级：5.15
Is Samacsys：N其他特性：IT CAN ALSO OPERATE WITH 5V TO 12V SINGLE SUPPLY
标称带宽：100000 kHz商用集成电路类型：VIDEO AMPLIFIER
JESD-30 代码：R-PDSO-G14JESD-609代码：e3
长度：8.65 mm湿度敏感等级：1
信道数量：3功能数量：1
端子数量：14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：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：COMMERCIAL座面最大高度：1.75 mm
最大供电电压 (Vsup)：6 V最小供电电压 (Vsup)：2.5 V
表面贴装：YES温度等级：COMMERCIAL
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宽度：3.9 mm
Base Number Matches：1

AD8073JRZ 数据手册

 浏览型号AD8073JRZ的Datasheet PDF文件第7页浏览型号AD8073JRZ的Datasheet PDF文件第8页浏览型号AD8073JRZ的Datasheet PDF文件第9页浏览型号AD8073JRZ的Datasheet PDF文件第11页浏览型号AD8073JRZ的Datasheet PDF文件第12页浏览型号AD8073JRZ的Datasheet PDF文件第13页 
AD8072/AD8073  
APPLICATIONS  
Overdrive Recovery  
On the other hand, the bandwidth of a current feedback ampli-  
fier can be decreased by increasing the feedback resistance. This  
can sometimes be useful where it is desired to reduce the noise  
bandwidth of a system. As a practical matter, the maximum  
value of feedback resistor was found to be 2 kΩ. Figure 5 shows  
the frequency response of an AD8072/AD8073 at a gain of two  
with both feedback and gain resistors equal to 2 kΩ.  
Overdrive of an amplifier occurs when the output and/or input  
range are exceeded. The amplifier must recover from this overdrive  
condition and resume normal operation. As shown in Figure 4,  
the AD8072 and AD8073 recover within 75 ns from positive  
overdrive and 30 ns from negative overdrive.  
Capacitive Load Drive  
When an op amp output drives a capacitive load, extra phase shift  
due to the pole formed by the op amp’s output impedance and  
the capacitor can cause peaking or even oscillation. The top trace  
of Figure 6, RS = 0 Ω, shows the output of one of the amplifiers of  
the AD8072/AD8073 when driving a 50 pF capacitor as shown in  
the schematic of Figure 7.  
V
IN  
V
OUT  
The amount of peaking can be significantly reduced by adding  
a resistor in series with the capacitor. The lower trace of Figure 6  
shows the same capacitor being driven with a 25 Ω resistor  
in series with it. In general, the resistor value will have to be  
experimentally determined, but 10 Ω to 50 Ω is a practical range  
of values to experiment with for capacitive loads of up to a few  
hundred pF.  
1V  
25ns  
Figure 4. Overload Recovery; VS = 5 V, VIN = 8 V p-p,  
RF = 1 kΩ, RL = 150 Ω, G = +2  
R
= 0Ω  
S
Bandwidth vs. Feedback Resistor Value  
R
= 25Ω  
S
The closed-loop frequency response of a current feedback amplifier  
is a function of the feedback resistor. A smaller feedback resistor  
will produce a wider bandwidth response. However, if the feed-  
back resistance becomes too small, the gain flatness can be  
affected. As a practical consideration, the minimum value of  
feedback resistance for the AD8072/AD8073 was found to be  
649 Ω. For resistances below this value, the gain flatness will be  
affected and more significant lot-to-lot variations in device per-  
formance will be noticed. Figure 5 shows a plot of the frequency  
response of an AD8072/AD8073 at a gain of two with both feed-  
back and gain resistors equal to 649 Ω.  
50mV  
20ns  
Figure 6. Capacitive Low Drive  
6.1  
6.0  
5.9  
5.8  
5.7  
7
1k⍀  
1k⍀  
6
R
S
5
4
3
2
R
= 649⍀  
F
V
= 100mV p-p  
C
R
L
1k⍀  
IN  
L
50pF  
50⍀  
0.1 dB  
DIV  
V
A
R
= ؎5V  
= 2  
= 150⍀  
= 0.2V p-p  
S
Figure 7. Capacitive Load Drive Circuit  
V
L
5.6  
5.5  
5.4  
1 dB  
DIV  
V
O
1
0
R
= 2k⍀  
F
0.1  
1
10  
FREQUENCY – MHz  
100  
500  
Figure 5. Frequency Response vs. RF  
–9–  
REV. D  
1...78910111213

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