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參數(shù)資料
| 型號(hào)： | LM4873 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| 中文描述： | 雙2.1W音頻功率放大器加立體聲耳機(jī)功能 |
| 文件頁數(shù)： | 6/19頁 |
| 文件大?。?/td> | 532K |
| 代理商： | LM4873 |
External Components Description
(Figure 1 )
Components
1.
R
i
Inverting input resistance which sets the closed-loop gain in conjunction with R
f
. This resistor also forms a
high pass filter with C
i
at f
c
= 1/(2
π
R
i
C
i
).
2.
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 an explanation of how to determine the value of C
i
.
3.
R
f
Feedback resistance which sets the closed-loop gain in conjunction with R
i
.
4.
C
s
Supply bypass capacitor which provides power supply filtering. Refer to the
Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
5.
C
B
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
.
Functional Description
Typical Performance Characteristics
MTE (20 pin)Specific Characteristics
Note 20:
These curves show the thermal dissipation ability of the LM4873MTE at different ambient temperatures given these conditions:
500LFPM + JEDEC board:
The part is soldered to a 1S2P 20-lead exposed-DAP TSSOP test board with 500 linear feet per minute of forced-air flow across
it.
Board information
- copper dimensions: 74x74mm, copper coverage: 100% (buried layer) and 12% (top/bottom layers), 16 vias under the exposed-DAP.
500LFPM + 2.5in
2
:
The part is soldered to a 2.5in
2
, 1 oz. copper plane with 500 linear feet per minute of forced-air flow across it.
2.5in
2
:
The part is soldered to a 2.5in
2
, 1oz. copper plane.
Not Attached:
The part is not soldered down and is not forced-air cooled.
LM4873MTE
THD+N vs Output Power
DS100993-33
LM4873MTE
THD+N vs Frequency
DS100993-34
LM4873MTE
THD+N vs Frequency
DS100993-36
LM4873MTE
Power Dissipation vs Power Output
DS100993-90
LM4873MTE
(Note 20)
Power Derating Curve
DS100993-95
L
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6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4873_02 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| LM4873IBL | 功能描述:IC AMP AUDIO PWR 3W STER 20USMD RoHS:否 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) |
| LM4873LQ | 制造商:Rochester Electronics LLC 功能描述:DUAL 1.1W AUDIO AMPLIFIER - Bulk |
| LM4873LQ/NOPB | 功能描述:IC AMP AUDIO PWR 3W STER 24LLP 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) |
| LM4873LQX | 功能描述:IC AMP AUDIO PWR 3W STER 24LLP 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) |
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