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參數(shù)資料
| 型號： | LMC6494AEM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運算放大器 |
| 英文描述： | CMOS Rail-to-Rail Input and Output Operational Amplifier |
| 中文描述： | QUAD OP-AMP, 3800 uV OFFSET-MAX, 1.5 MHz BAND WIDTH, PDSO14 |
| 封裝： | PLASTIC, SOP-14 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大小： | 705K |
| 代理商： | LMC6494AEM |
Application Notes
(Continued)
The designer should be aware that when it is inappropriate
to lay out a PC board for the sake of just a few circuits, there
is another technique which is even better than a guard ring
on a PC board: Don’t insert the amplifier’s input pin into the
board at all, but bend it up in the air and use only air as an in-
sulator. Air is an excellent insulator. In this case you may
have to forego some of the advantages of PC board con-
struction, but the advantages are sometimes well worth the
effort of using point-to-point up-in-the-air wiring. See Figure
8
Application Circuits
DS012049-13
FIGURE 6. Examples of Guard
Ring in PC Board Layout
DS012049-14
Inverting Amplifier
DS012049-15
Non-Inverting Amplifier
DS012049-16
Follower
FIGURE 7. Typical Connections of Guard Rings
DS012049-17
(Input pins are lifted out of PC board and soldered directly to components.
FIGURE 8. Air Wiring
DC Summing Amplifier (V
IN
≥
0V
DC
and V
O
≥
V
DC
DS012049-18
Where: V
0
= V
1
+ V
2
V
3
– V
4
(V
1
+ V
2
≥
(V
3
+ V
4
) to keep V
0
>
0V
DC
www.national.com
13
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMC6494AEM/NOPB | 功能描述:運算放大器 - 運放 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 |
| LMC6494AEMX | 功能描述:運算放大器 - 運放 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 |
| LMC6494AEMX/NOPB | 功能描述:運算放大器 - 運放 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 |
| LMC6494AEN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:CMOS Rail-to-Rail Input and Output Operational Amplifier |
| LMC6494BEM | 功能描述:運算放大器 - 運放 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 |
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