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參數(shù)資料
| 型號(hào)： | 5962F9553602VXA |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | OP-AMP, 7000 uV OFFSET-MAX, 200 MHz BAND WIDTH, CDSO10 |
| 封裝： | CERAMIC, SOIC-10 |
| 文件頁(yè)數(shù)： | 10/24頁(yè) |
| 文件大小： | 797K |
| 代理商： | 5962F9553602VXA |
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Power Supply Bypassing
Bypassing the power supply is necessary to maintain low
power supply impedance across frequency. Both positive and
negative power supplies should be bypassed individually by
placing 0.01
μF ceramic capacitors directly to power supply
pins and 2.2
μF tantalum capacitors close to the power supply
pins.
20159511
FIGURE 2. Power Supply Bypassing
Termination
In high frequency applications, reflections occur if signals are
not properly terminated. Figure 3 shows a properly terminated
signal while Figure 4 shows an improperly terminated signal.
20159517
FIGURE 3. Properly Terminated Signal
20159518
FIGURE 4. Improperly Terminated Signal
To minimize reflection, coaxial cable with matching charac-
teristic impedance to the signal source should be used. The
other end of the cable should be terminated with the same
value terminator or resistor. For the commonly used cables,
RG59 has 75
Ω characteristic impedance, and RG58 has
50
Ω characteristic impedance.
Driving Capacitive Loads
Amplifiers driving capacitive loads can oscillate or have ring-
ing at the output. To eliminate oscillation or reduce ringing, an
isolation resistor can be placed as shown below in Figure 5.
The combination of the isolation resistor and the load capac-
itor forms a pole to increase stability by adding more phase
margin to the overall system. The desired performance de-
pends on the value of the isolation resistor; the bigger the
isolation resistor, the more damped the pulse response be-
comes. For LM7171, a 50
Ω isolation resistor is recommended
for initial evaluation. Figure 6 shows the LM7171 driving a 150
pF load with the 50
Ω isolation resistor.
20159512
FIGURE 5. Isolation Resistor Used
to Drive Capacitive Load
www.national.com
18
LM7171QML
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 5962F9560401QPA | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| 5962F9560401VPA | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| 5962F9560401VXA | 制造商:Texas Instruments 功能描述:SPACE LEVEL RAD (LM6172AMWG) |
| 5962F9560402VXA | 制造商:Texas Instruments 功能描述:DUAL HIGH SPEED, LOW POWER, LOW DISTORTI - Bulk |
| 5962F9563002QYC | 制造商:Intersil Corporation 功能描述: |
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