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參數(shù)資料
| 型號： | LM363 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運動控制電子 |
| 英文描述： | LM363 Precision Instrumentation Amplifier |
| 中文描述： | LM363精密儀表放大器 |
| 文件頁數(shù)： | 14/22頁 |
| 文件大?。?/td> | 452K |
| 代理商： | LM363 |
Application Hints
(Continued)
If power supply rejection is critical, frequently only the nega-
tive PSRR need be adjusted, since the positive PSRR is
more tightly specified. Any or all of the trim schemes of
Figure 10 can be combined as desired. As long as the cen-
ter tap of the 100k trimpot is returned to a voltage 200 mV
below V
a
, the trim schemes shown will not greatly affect
TL/H/5609–17
V
OS
. Both the gain and DC CMRR trims can degrade posi-
tive PSRR; the positive PSRR can then be nulled out if de-
sired. The correct order of trimming from first to last is bias
current, gain, CMRR, negative PSRR, positive PSRR and
V
OS
.
Top Trace: Cable Shield Grounded
Bottom Trace: Cable Shield Bootstrapped
TL/H/5609–18
FIGURE 9. Improved Response using Shield Drivers
TL/H/5609–19
FIGURE 10. Other Trims for 16-Pin Package
14
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