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參數(shù)資料
| 型號： | LM4808MDC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.15 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 835K |
| 代理商： | LM4808MDC |
External Components Description (Figure 1)
Components
Functional Description
1. R
i
The inverting input resistance, along with R
f, set the closed-loop gain. Ri, along with Ci, form a high
pass filter with f
c = 1/(2πRiCi).
2. C
i
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i, along with Ri,
create a highpass filter with f
C = 1/(2πRiCi). Refer to the section, Selecting Proper External
Components, for an explanation of determining the value of C
i.
3. R
f
The feedback resistance, along with R
i, set closed-loop gain.
4. C
S
This is the supply bypass capacitor. It provides power supply filtering. Refer to the Application
Information section for proper placement and selection of the supply bypass capacitor.
5. C
B
This is the half-supply bypass pin capacitor. It provides half-supply filtering. Refer to the section,
Selecting Proper External Components, for information concerning proper placement and selection
of C
B.
6. C
O
This is the output coupling capacitor. It blocks the DC voltage at the amplifier’s output and forms a high
pass filter with R
L at fO = 1/(2πRLCO)
7. R
B
This is the resistor which forms a voltage divider that provides 1/2 V
DD to the non-inverting input of the
amplifier.
Typical Performance
Characteristics
THD+N vs Frequency
10127603
10127604
THD+N vs Frequency
10127605
10127606
LM4808
www.national.com
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4808MM | 制造商:Texas Instruments 功能描述:Audio Amp Headphone 2-CH Stereo 0.15W Class-AB 8-Pin MSOP T/R |
| LM4808MM/NOPB | 功能描述:音頻放大器 LM4808 Dual 105 Mw Headphone Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4808MMX | 制造商:Texas Instruments 功能描述:Audio Amp Headphone 2-CH Stereo 0.15W Class-AB 8-Pin MSOP T/R |
| LM4808MMX/NOPB | 功能描述:音頻放大器 LM4808 Dual 105 Mw Headphone Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4808MX | 制造商:Texas Instruments 功能描述:Audio Amp Headphone 2-CH Stereo 0.15W Class-AB 8-Pin SOIC N T/R |
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