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AD8138ARMZ

更新时间： 2024-01-05 13:45:42
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
24页 451K
描述
Low Distortion Differential ADC Driver

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中文翻译

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AD8138ARMZ 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

AD8138ARMZ 数据手册

 浏览型号AD8138ARMZ的Datasheet PDF文件第18页浏览型号AD8138ARMZ的Datasheet PDF文件第19页浏览型号AD8138ARMZ的Datasheet PDF文件第20页浏览型号AD8138ARMZ的Datasheet PDF文件第21页浏览型号AD8138ARMZ的Datasheet PDF文件第23页浏览型号AD8138ARMZ的Datasheet PDF文件第24页 
AD8138  
3 V OPERATION  
The circuit in Figure 47 shows a simplified front-end  
The circuit was tested with a −0.5 dBFS signal at various  
frequencies. Figure 48 shows a plot of the total harmonic  
distortion (THD) vs. frequency at signal amplitudes of 1 V and  
2 V differential drive levels.  
connection for an AD8138 driving an AD9203, a 10-bit,  
40 MSPS ADC 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 differential 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 Ω at the input to  
−IN is to balance the impedance of the 50 Ω source and its 50 Ω  
termination that drives the noninverting input.  
–55  
AD8138–2V  
–60  
–65  
AD8138–1V  
The signal generator has ground-referenced, bipolar output,  
that is, 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.  
–70  
–75  
–80  
0
5
10  
15  
20  
25  
The output common mode is raised up to midsupply by the  
voltage divider that biases VOCM. In this way, the AD8138  
provides dc coupling and level-shifting of a bipolar signal,  
without inverting the input signal.  
FREQUENCY (MHz)  
Figure 48. AD9203 THD @ −0.5 dBFS AD8138  
Figure 49 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.  
The low-pass filter between the AD8138 and the AD9203  
provides filtering that helps to improve the signal-to-noise ratio  
(SNR). Lower noise can be realized by lowering the pole  
frequency, but the bandwidth of the circuit is lowered.  
65  
63  
61  
3V  
3V  
0.1µF  
0.1µF  
499Ω  
0.1µF  
10kΩ  
28  
2
3
59  
49.9Ω  
499Ω  
AVDD DRVDD  
+
5
8
2
25  
AINN  
57  
20pF  
DIGITAL  
OUTPUTS  
AD8138–1V  
49.9Ω  
AD9203  
AD8138  
AINP  
523Ω  
49.9Ω  
55  
26  
4
1
AVSS DRVSS  
27  
6
AD8138–2V  
20pF  
1
53  
0.1µF  
10kΩ  
499Ω  
51  
49  
47  
45  
Figure 47. AD8138 Driving an AD9203, a 10-Bit, 40 MSPS A/D Converter  
0
5
10  
15  
20  
25  
FREQUENCY (MHz)  
Figure 49. AD9203 SINAD @ −0.5 dBFS AD8138  
Rev. F | Page 22 of 24  
 
 
 
 
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中文翻译

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AD8138ARMZ 替代型号

型号 品牌 替代类型 描述 数据表
AD8138ARMZ-REEL ADI

类似代替

 		Low Distortion Differential ADC Driver
AD8138ARM-REEL7 ADI

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 		Low Distortion Differential ADC Driver

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AD8138AR-REEL ADI Low Distortion Differential ADC Driver

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AD8138AR-REEL7 ADI Low Distortion Differential ADC Driver

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AD8138ARZ ADI Low Distortion Differential ADC Driver

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AD8138ARZ-R7 ADI Low Distortion Differential ADC Driver

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