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參數(shù)資料
| 型號： | LM7131BMDC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 13/26頁 |
| 文件大?。?/td> | 591K |
| 代理商： | LM7131BMDC |
Using the LM7131 (Continued)
D/A Output Amplifier
The LM7131 can be used as an output amplifier for fast
digital-to-analog converters. When using the LM7131 with
converters with an output voltage range which may exceed
the differential input voltage limit of ±2V, it may be necessary
to add protection diodes to the inputs. See
Figure 15. For
high speed applications, it may be useful to consider low ca-
pacitance schottky diodes. Additional feedback capacitance
may be needed to control ringing due to the additional input
capacitance from the D/A and protection diodes. When used
with current output D/As, the input bias currents may pro-
duce a DC offset in the output. This offset may be canceled
by a resistor between the positive input and ground.
Spice Macromodel
A SPICE macromodel of the LM7131 and many other Na-
tional Semiconductor op amps is available at no charge from
your National Semiconductor representative.
DS012313-24
FIGURE 15. D/A Ouput Amplifier
www.national.com
20
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