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LMC6062AIM-NOPB

LMC6062AIM-NOPB首页预览图
型号: LMC6062AIM-NOPB
PDF文件:
  • LMC6062AIM-NOPB PDF文件
  • LMC6062AIM-NOPB PDF在线浏览
功能描述: LMC6062 Precision CMOS Dual Micropower Operational Amplifier
PDF文件大小: 1175.13 Kbytes
PDF页数: 共21页
制造商: TI1[Texas Instruments]
制造商LOGO: TI1[Texas Instruments] LOGO
制造商网址: http://www.ti.com
捡单宝LMC6062AIM-NOPB
PDF页面索引
120%
LMC6062
www.ti.com
SNOS631D NOVEMBER 1994REVISED MARCH 2013
Figure 27. Example of Guard Ring in P.C. Board Layout
(a) Inverting Amplifier
(b) Non-Inverting Amplifier
(c) Follower
Figure 28. Typical Connections of Guard Rings
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 insulator. Air is an
excellent insulator. In this case you may have to forego some of the advantages of PC board construction, but
the advantages are sometimes well worth the effort of using point-to-point up-in-the-air wiring. See Figure 29.
Latchup
CMOS devices tend to be susceptible to latchup due to their internal parasitic SCR effects. The (I/O) input and
output pins look similar to the gate of the SCR. There is a minimum current required to trigger the SCR gate
lead. The LMC6062 and LMC6082 are designed to withstand 100 mA surge current on the I/O pins. Some
resistive method should be used to isolate any capacitance from supplying excess current to the I/O pins. In
addition, like an SCR, there is a minimum holding current for any latchup mode. Limiting current to the supply
pins will also inhibit latchup susceptibility.
Copyright © 1994–2013, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Links: LMC6062
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