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AD8014 PDF预览

AD8014

更新时间: 2024-01-29 22:17:48
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
10页 152K
描述
400 MHz Low Power High Performance Amplifier

AD8014 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:ROHS COMPLIANT, MS-012AA, SOIC-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.31.00.01风险等级:5.12
Is Samacsys:N放大器类型:OPERATIONAL AMPLIFIER
架构:CURRENT-FEEDBACK最大平均偏置电流 (IIB):15 µA
25C 时的最大偏置电流 (IIB):15 µA标称共模抑制比:57 dB
频率补偿:YES最大输入失调电压:6000 µV
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:4.9 mm低-偏置:NO
低-失调:NO微功率:NO
湿度敏感等级:1负供电电压上限:-6.3 V
标称负供电电压 (Vsup):-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封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
包装方法:TAPE AND REEL峰值回流温度(摄氏度):260
功率:NO电源:5/+-5 V
可编程功率:NO认证状态:Not Qualified
座面最大高度:1.75 mm标称压摆率:4600 V/us
子类别:Operational Amplifier最大压摆率:1.3 mA
供电电压上限:6.3 V标称供电电压 (Vsup):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
宽带:YES宽度:3.9 mm
Base Number Matches:1

AD8014 数据手册

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AD8014  
Figure 21 shows the circuit that was used to imitate a photo-  
diode preamp. A photodiode for this application is basically a  
high impedance current source that is shunted by a small ca-  
pacitance. In this case, a high voltage pulse from a Picosecond  
Pulse Labs Generator that is ac-coupled through a 20 kresis-  
tor is used to simulate the high impedance current source of a  
photodiode. This circuit will convert the input voltage pulse into  
a small charge package that is converted back to a voltage by the  
AD8014 and the feedback resistor.  
In this case the feedback resistor chosen was 1.74 k, which is a  
compromise between maintaining bandwidth and providing  
sufficient gain in the preamp stage. The circuit preserves the  
pulse shape very well with very fast rise time and a minimum of  
overshoot as shown in Figure 22.  
Figure 19. Large Signal Step Response; VS = ±5 V,  
VO = 4 V Step  
1.74k⍀  
+5V  
0.1F  
20k⍀  
INPUT  
49.9OUTPUT  
49.9⍀  
AD8014  
(10
؋
 PROBE)  
(NO LOAD)  
–5V  
Figure 21. AD8014 as a Photodiode Preamp  
TEK RUN: 2.0GS/s ET AVERAGE  
T[  
]
1
INPUT  
20mV/DIV  
Figure 20. Large Signal Step Response; VS = +5 V,  
VO = 2 V Step  
Note: On Figures 19 and 20 RF = 500 , RS = 50 and CL =  
20 pF.  
2
OUTPUT  
500mV/DIV  
CH1 20.0V CH2 500mV M 25.0ns CH4 380mV  
APPLICATIONS  
CD ROM and DVD Photodiode Preamp  
Figure 22. Pulse Response  
High speed Multi-X CD ROM and DVD drives require high  
frequency photodiode preamps for their read channels. To mini-  
mize the effects of the photodiode capacitance, the low imped-  
ance of the inverting input of a current feedback amplifier is  
advantageous. Good group delay characteristics will preserve the  
pulse response of these pulses. The AD8014, having many ad-  
vantages, can make an excellent low cost, low noise, low power,  
and high bandwidth photodiode preamp for these applications.  
–8–  
REV. B  

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