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參數(shù)資料
| 型號(hào)： | LM4901 |
| 文件頁(yè)數(shù)： | 14/22頁(yè) |
| 文件大?。?/td> | 1177K |
| 代理商： | LM4901 |
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Application Information
(Continued)
The LM4901 is unity-gain stable and requires no external
components besides gain-setting resistors, an input coupling
capacitor, and proper supply bypassing in the typical appli-
cation. However, if a closed-loop differential gain of greater
than 10 is required, a feedback capacitor (C4) may be
needed as shown in Figure 2 to bandwidth limit the amplifier.
This feedback capacitor creates a low pass filter that elimi-
nates possible high frequency oscillations. Care should be
taken when calculating the -3dB frequency in that an incor-
rect combination of R
and C
will cause rolloff before
20kHz. A typical combination of feedback resistor and ca-
pacitor that will not produce audio band high frequency rolloff
is R
= 20k
and C
= 25pf. These components result in a
-3dB point of approximately 320 kHz.
20019824
FIGURE 2. HIGHER GAIN AUDIO AMPLIFIER
L
www.national.com
14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4901IBL | AUDIO AMPLIFIER|SINGLE|BGA|9PIN|PLASTIC |
| LM4901IBLX | AUDIO AMPLIFIER|SINGLE|BGA|9PIN|PLASTIC |
| LM4901IBP | AUDIO AMPLIFIER|SINGLE|BGA|8PIN|PLASTIC |
| LM4901IBPX | AUDIO AMPLIFIER|SINGLE|BGA|8PIN|PLASTIC |
| LM4901LD | AUDIO AMPLIFIER|SINGLE|LLCC|10PIN|PLASTIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4901AUL WAF | 制造商:Texas Instruments 功能描述: |
| LM4901IBL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AUDIO AMPLIFIER|SINGLE|BGA|9PIN|PLASTIC |
| LM4901IBLX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AUDIO AMPLIFIER|SINGLE|BGA|9PIN|PLASTIC |
| LM4901IBP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AUDIO AMPLIFIER|SINGLE|BGA|8PIN|PLASTIC |
| LM4901IBPX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AUDIO AMPLIFIER|SINGLE|BGA|8PIN|PLASTIC |
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