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OPA621KU PDF预览

OPA621KU

更新时间： 2024-02-17 18:14:20
品牌 Logo 应用领域
BB 运算放大器
页数 文件大小 规格书
16页 195K
描述
Wideband Precision OPERATIONAL AMPLIFIER

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中文翻译

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OPA621KU 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：DIP, DIP8,.3Reach Compliance Code：unknown
风险等级：5.58放大器类型：OPERATIONAL AMPLIFIER
架构：VOLTAGE-FEEDBACK最大平均偏置电流 (IIB)：40 µA
25C 时的最大偏置电流 (IIB)：30 µA标称共模抑制比：75 dB
频率补偿：YES (AVCL>=2)最大输入失调电压：1000 µV
JESD-30 代码：R-CDIP-T8JESD-609代码：e0
低-失调：NO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：125 °C最低工作温度：-55 °C
封装主体材料：CERAMIC, METAL-SEALED COFIRED封装代码：DIP
封装等效代码：DIP8,.3封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：+-5 V认证状态：Not Qualified
最小摆率：350 V/us标称压摆率：500 V/us
子类别：Operational Amplifier最大压摆率：30 mA
供电电压上限：7 V标称供电电压 (Vsup)：5 V
表面贴装：NO技术：BIPOLAR
温度等级：MILITARY端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
标称均一增益带宽：500000 kHz最小电压增益：160
Base Number Matches：1

OPA621KU 数据手册

 浏览型号OPA621KU的Datasheet PDF文件第10页浏览型号OPA621KU的Datasheet PDF文件第11页浏览型号OPA621KU的Datasheet PDF文件第12页浏览型号OPA621KU的Datasheet PDF文件第13页浏览型号OPA621KU的Datasheet PDF文件第15页浏览型号OPA621KU的Datasheet PDF文件第16页 
defined as the change in degrees of the closed-loop phase  
over the same output voltage change. Both DG and DP are  
specified at the NTSC sub-carrier frequency of 3.58MHz.  
DG and DP increase with closed-loop gain and output  
voltage transition as shown in the Typical Performance  
Curves. All measurements were performed using a Tektronix  
model VM700 Video Measurement Set.  
60  
55  
50  
Ω
RL = 400  
45  
40  
35  
30  
Ω
RL = 100  
RL = 50Ω  
250Ω  
250Ω  
25  
20  
15  
10  
POUT  
RL  
–
+
DISTORTION  
The OPA621’s Harmonic Distortion characteristics into a  
50Ω load are shown vs frequency and power output in the  
Typical Performance Curves. Distortion can be further  
improved by increasing the load resistance as illustrated in  
Figure 8. Remember to include the contribution of the  
feedback resistance when calculating the effective load  
resistance seen by the amplifier.  
G = +2V/V  
20 30  
0
10  
40  
50  
60  
70  
80  
90  
100  
Frequency (MHz)  
FIGURE 9. Two-Tone Third-Order Intermodulation Inter-  
cept vs Frequency.  
For this case OPI3P = 47dBm, PO = 4dBm, and the third-  
order IMD = 2(47 – 4) = 86dB below either 4dBm tone. The  
OPA621’s low IMD makes the device an excellent choice  
for a variety of RF signal processing applications.  
10MHz HARMONIC DISTORTION  
vs LOAD RESISTANCE  
–40  
VO = 2Vp-p  
–50  
NOISE FIGURE  
–60  
2f  
The OPA621’s voltage and current noise spectral densities  
are specified in the Typical Performance Curves. For RF  
applications, however, Noise Figure (NF) is often the  
preferred noise specification since it allows system noise  
performance to be more easily calculated. The OPA621’s  
Noise Figure vs Source Resistance is shown in Figure 10.  
G = +2V/V  
–70  
G = +5V/V  
–80  
3f  
–90  
0
100  
200  
300  
400  
500  
SPICE MODELS  
Load Resistance (Ω)  
Computer simulation using SPICE is often useful when  
analyzing the performance of analog circuits and systems.  
This is particularly true for Video and RF amplifier circuits  
where parasitic capacitance and inductance can have a major  
effect on circuit performance. A SPICE model using  
MicroSim Corporation’s PSpice is available for the OPA621.  
This simulation model is available through the Burr-Brown  
web site at www.burr-brown.com or by calling the Burr-  
Brown Applications Department.  
FIGURE 8. 10MHz Harmonic Distortion vs Load Resistance.  
Two-tone, third-order intermodulation distortion (IM) is an  
important parameter for many RF amplifier applications.  
Figure 9 shows the OPA621’s two-tone, third-order IM  
intercept vs frequency. For these measurements, tones were  
spaced 1MHz apart. This curve is particularly useful for  
determining the magnitude of the third-order IM products as  
a function of frequency, load resistance, and gain. For  
example, assume that the application requires the OPA621  
to operate in a gain of +2V/V and drive 2Vp-p (4dBm for  
each tone) into 50Ω at a frequency of 10MHz. Referring to  
Figure 9 we find that the intercept point is +47dBm. The  
magnitude of the third-order IM products can now be easily  
calculated from the expression:  
NOISE FIGURE vs SOURCE RESISTANCE  
25  
en2 + (inRS)2  
20  
NFdB = 10log 1 +  
4kTRS  
15  
10  
Third IMD = 2(OPI3P – PO)  
where OPI3P = third-order output intercept, dBm  
PO = output level/tone, dBm/tone  
Third IMD = third-order intermodulation ratio  
below each output tone, dB  
5
0
10k  
100k  
10  
100  
1k  
Source Resistance (Ω)  
FIGURE 10. Noise Figure vs Source Resistance.  
®
14  
OPA621  
1...111213141516

中文翻译

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OPA621KU 替代型号

型号 品牌 替代类型 描述 数据表
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