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參數(shù)資料
| 型號： | LMC835V |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻控制 |
| 英文描述： | LMC835 Digital Controlled Graphic Equalizer |
| 中文描述： | 1 CHANNEL(S), EQUALIZER CIRCUIT, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 474K |
| 代理商： | LMC835V |
Application Hints
(Continued)
MODEL
TL/H/6753–21
RESULT
TL/H/6753–22
FIGURE 15. Effect of R
LEAK
REDUCING EXTERNAL COMPONENTS
The typical application shown in Figure 7 is switching noise
free. The DC-coupled circuit in Figure 16 is also switching
noise free, except at 12 dB/6 dB switch turn ON/OFF. This
switching noise is caused by the I
bias
and V
offset
of the op
amps. Selecting a low I
bias
and V
offset
op amp can minimize
the switching noise due to the 12 dB/6 dB switch. The DC-
coupled application can also eliminate the R
F
e
100k resis-
tors with only a 0.5 dB gain error at 12 dB boost or cut.
AC COUPLING
TL/H/6753–23
DC COUPLING
TL/H/6753–24
FIGURE 16. Reducing External Components
15
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