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AD8138ARM PDF预览

AD8138ARM

更新时间： 2024-02-29 08:42:52
品牌 Logo 应用领域
亚德诺 - ADI 线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
16页 535K
描述
Low Distortion Differential ADC Driver

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中文翻译

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AD8138ARM 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：0.78
差分输出：YES驱动器位数：1
输入特性：DIFFERENTIAL接口集成电路类型：LINE DRIVER
接口标准：GENERAL PURPOSEJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1标称负供电电压：-5 V
功能数量：1端子数量：8
最高工作温度：85 °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
最大接收延迟：座面最大高度：1.75 mm
最大供电电压：5.5 V最小供电电压：1.4 V
标称供电电压：5 V表面贴装：YES
技术：BIPOLAR温度等级：INDUSTRIAL
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

AD8138ARM 数据手册

 浏览型号AD8138ARM的Datasheet PDF文件第10页浏览型号AD8138ARM的Datasheet PDF文件第11页浏览型号AD8138ARM的Datasheet PDF文件第12页浏览型号AD8138ARM的Datasheet PDF文件第14页浏览型号AD8138ARM的Datasheet PDF文件第15页浏览型号AD8138ARM的Datasheet PDF文件第16页 
AD8138  
3 V OPERATION  
The circuit was tested with a –0.5 dBFS signal at various frequen-  
cies. Figure 8 shows a plot of the total harmonic distortion (THD)  
vs. frequency at signal amplitudes of 1 V and 2 V differential  
drive levels.  
The circuit in Figure 7 shows a simplified front end connection  
for an AD8138 driving an AD9203, a 10-bit, 40 MSPS A/D con-  
verter that is specified to work on a single 3 V supply. The ADC  
works best when driven differentially to make the best use of the  
signal swing available within the 3 V supply. The appropriate  
outputs of the AD8138 are connected to the appropriate differen-  
tial inputs of the AD9203 via a low-pass filter.  
–40  
–45  
–50  
The AD8138 is configured for unity gain for a single-ended  
input to differential output. The additional 23 W at the input to  
–IN is to balance the impedance of the 50 W source and its 50 W  
termination that drives the noninverting input.  
–55  
AD8138–2V  
–60  
The signal generator has ground-referenced, bipolar output,  
i.e., it can drive symmetrically above and below ground. Even  
though the AD8138 has ground as its negative supply, it can  
still function as a level-shifter with such an input signal.  
–65  
AD8138–1V  
–70  
–75  
–80  
The output common mode is raised up to midsupply by the  
voltage divider that biases VOCM. In this way, the AD8138 pro-  
vides dc coupling and level-shifting of a bipolar signal, without  
inverting the input signal.  
0
5
10  
15  
20  
25  
FREQUENCY – MHz  
Figure 8. AD9203 THD @ –0.5 dBFS AD8138  
The low-pass filter between the AD8138 and the AD9203 pro-  
vides filtering that helps to improve the signal-to-noise ratio.  
Lower noise can be realized by lowering the pole frequency, but  
the bandwidth of the circuit will be lowered.  
Figure 9 shows the signal to noise plus distortion (SINAD)  
under the same conditions as above. For the smaller signal  
swing, the AD8138 performance is quite good, but its performance  
degrades when trying to swing too close to the supply rails.  
+3V  
+3V  
65  
63  
61  
0.1␮F  
0.1␮F  
499⍀  
0.1␮F  
10k⍀  
499⍀  
49.9⍀  
AVDD DRVDD  
AINN  
+
59  
20pF  
DIGITAL  
49.9⍀  
AD9203  
AD8138  
OUTPUTS  
57  
AD8138–1V  
AINP  
AVSS DRVSS  
523⍀  
49.9⍀  
55  
20pF  
0.1␮F  
10k⍀  
AD8138–2V  
53  
499⍀  
51  
49  
47  
45  
Figure 7. AD8138 Driving an AD9203, a 10-Bit, 40 MSPS  
A/D Converter  
0
5
10  
15  
20  
25  
FREQUENCY – MHz  
Figure 9. AD9203 SINAD @ –0.5 dBFS AD8138  
REV. E  
–13–  
1...10111213141516

中文翻译

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AD8138ARM 替代型号

型号 品牌 替代类型 描述 数据表
AD8138ARMZ-REEL7 ADI

类似代替

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AD8138ARMZ ADI

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 		Low Distortion Differential ADC Driver

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