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AD8056ARM-REEL

更新时间： 2024-02-13 14:25:31
品牌 Logo 应用领域
亚德诺 - ADI 消费电路商用集成电路音频放大器视频放大器光电二极管
页数 文件大小 规格书
11页 208K
描述
Low Cost, 300 MHz Voltage Feedback Amplifiers

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中文翻译

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AD8056ARM-REEL 技术参数

是否无铅： 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：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：1.6
放大器类型：OPERATIONAL AMPLIFIER最大平均偏置电流 (IIB)：1.2 µA
标称共模抑制比：82 dB最大输入失调电压：10000 µV
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
标称负供电电压 (Vsup)：-5 V功能数量：2
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
认证状态：Not Qualified座面最大高度：1.75 mm
标称压摆率：840 V/us子类别：Operational Amplifier
供电电压上限：13.2 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)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：30宽度：3.9 mm
Base Number Matches：1

AD8056ARM-REEL 数据手册

 浏览型号AD8056ARM-REEL的Datasheet PDF文件第5页浏览型号AD8056ARM-REEL的Datasheet PDF文件第6页浏览型号AD8056ARM-REEL的Datasheet PDF文件第7页浏览型号AD8056ARM-REEL的Datasheet PDF文件第8页浏览型号AD8056ARM-REEL的Datasheet PDF文件第10页浏览型号AD8056ARM-REEL的Datasheet PDF文件第11页 
AD8055/AD8056  
APPLICATIONS  
Four-Line Video Driver  
The gain of this circuit from the input to Amp 1 output is RF/RI,  
while the gain to the output of Amp 2 is –RF/RI. The circuit  
thus creates a balanced differential output signal from a single-  
ended input. The advantage of this circuit is that the gain can be  
changed by changing a single resistor and still maintain the  
balanced differential outputs.  
The AD8055 is a useful low cost circuit for driving up to four  
video lines. For such an application, the amplifier is configured  
for a noninverting gain of 2 as shown in Figure 33. The input  
video source is terminated in 75 Ω and applied to the high  
impedance noninverting input.  
R
F
Each output cable is connected to the op amp output via a 75 Ω  
series back termination resistor for proper cable termination.  
The terminating resistors at the other ends of the lines will  
divide the output signal by two, which is compensated for by  
the gain-of-two of the op amp stage.  
402⍀  
+5V  
10␮F  
0.1␮F  
R
402⍀  
I
8
3
2
V
IN  
49.9⍀  
+V  
OUT  
1
AMP1  
For a single load, the differential gain error of this circuit was  
measured to be 0.01%, with a differential phase error of  
0.02 degrees. The two load measurements were 0.02% and  
0.03 degrees, respectively. For four loads, the differential gain  
error is 0.02%, while the differential phase increases to 0.1  
degrees.  
402⍀  
402⍀  
402⍀  
AD8056  
402⍀  
75⍀  
V
OUT1  
+5V  
75⍀  
75⍀  
402⍀  
6
5
49.9⍀  
–V  
OUT  
7
AMP2  
75⍀  
10␮F  
10␮F  
0.1␮F  
4
V
402⍀  
75⍀  
OUT2  
75⍀  
2
7
10␮F  
6
0.1␮F  
AD8055  
–5V  
3
V
4
IN  
75⍀  
75⍀  
V
V
OUT3  
Figure 34. Single-Ended to Differential Line Driver  
0.1␮F  
75⍀  
75⍀  
Low Noise, Low Power Preamp  
–5V  
The AD8055 makes a good low cost, low noise, low power  
preamp. A gain of 10 preamp can be made with a feedback  
resistor of 909 ohms and a gain resistor of 100 ohms as shown  
in Figure 35. The circuit has a –3 dB bandwidth of 20 MHz.  
OUT4  
Figure 33. Four-Line Video Driver  
Single-Ended to Differential Line Driver  
909⍀  
Creating differential signals from single-ended signals is  
required for driving balanced, twisted pair cables, differential  
input A/D converters and other applications that require differen-  
tial signals. This is sometimes accomplished by using an inverting  
and a noninverting amplifier stage to create the complementary  
signals.  
+5V  
+
0.1␮F  
10␮F  
100⍀  
2
3
7
6
V
OUT  
AD8055  
4
R
S
The circuit shown in Figure 34 shows how an AD8056 can be  
used to make a single-ended to differential converter that offers  
some advantages over the architecture mentioned above. Each  
op amp is configured for unity gain by the feedback resistors  
from the outputs to the inverting inputs. In addition, each out-  
put drives the opposite op amp with a gain of –1 by means of the  
crossed resistors. The result of this is that the outputs are comple-  
mentary and there is high gain in the overall configuration.  
10␮F  
0.1␮F  
–5V  
Figure 35. Low Noise, Low Power Preamp with G = 10  
and BW = 20 MHz  
With a low source resistance (<approximately 100 Ω), the major  
contributors to the input referred noise of this circuit are the  
input voltage noise of the amplifier and the noise of the 100 Ω  
resistor. These are 6 nV/√Hz and 1.2 nV/√Hz, respectively.  
These values yield a total input referred noise of 6.1 nV/√Hz.  
Feedback techniques similar to a conventional op amp are used  
to control the gain of the circuit. From the noninverting input  
of Amp 1 to the output of Amp 2, is an inverting gain. Between  
these points a feedback resistor can be used to close the loop.  
As in the case of a conventional op amp inverting gain stage, an  
input resistor is added to vary the gain.  
REV. B  
–9–  
1...67891011

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