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參數(shù)資料
| 型號： | LM4808 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual 105 mW Headphone Amplifier |
| 中文描述： | 雙105毫瓦耳機(jī)放大器 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 674K |
| 代理商： | LM4808 |
External Components Description
(Figure 1)
Compo-
nents
Functional Description
1. R
i
Inverting input resistance which sets the closed-loop gain in conjuction with R
f
. This resistor also
forms a high pass filter with C
i
at f
c
= 1 / (2
π
R
i
C
i
).
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
i
at f
c
= 1 / (2
π
R
i
C
i
). Refer to the section,
Proper Selection of External
Components,
for and explanation of how to determine the value of C
i
.
Feedback resistance which sets closed-loop gain in conjuction with R
i
.
Supply bypass capacitor which provides power supply filtering. Refer to the
Application Information
section for proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section,
Proper Selection of
External Components,
for information concerning proper placement and selection of C
B
.
Output coupling capacitor which blocks the DC voltage at the amplifier’s output. Forms a high pass
filter with R
L
at f
O
= 1/(2
π
R
L
C
O
)
Resistor which forms a voltage divider that provides a half-supply DC voltage to the non-inverting
input of the amplifier.
2. C
i
3. R
f
4. C
S
5. C
B
6. C
O
7. R
B
Typical Performance Characteristics
THD+N vs Frequency
DS101276-3
THD+N vs Frequency
DS101276-4
THD+N vs Frequency
DS101276-5
THD+N vs Frequency
DS101276-6
THD+N vs Frequency
DS101276-7
THD+N vs Frequency
DS101276-8
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4808LD | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM4808LD/NOPB | 功能描述:IC AMP AUDIO PWR .15W STER 8LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4808LDBD | 功能描述:BOARD EVALUATION LM4808LD RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| LM4808LDX/NOPB | 制造商:Texas Instruments 功能描述:Audio Amp Headphone 2-CH Stereo 0.15W Class-AB 8-Pin LLP EP T/R |
| LM4808M | 制造商:Texas Instruments 功能描述:Audio Amp Headphone 2-CH Stereo 0.15W Class-AB 8-Pin SOIC N Rail 制造商:Texas Instruments 功能描述:Power Audio Amplifier,LM4808M SO8 |
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