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參數(shù)資料
| 型號(hào)： | LM4850MT |
| 廠(chǎng)商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | Mono 1.5 W / Stereo 300 mW Power Amplifier |
| 中文描述： | 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| 封裝： | 4.40 MM, PLASTIC, TSSOP-14 |
| 文件頁(yè)數(shù)： | 1/20頁(yè) |
| 文件大?。?/td> | 1112K |
| 代理商： | LM4850MT |
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LM4850
Mono 1.5 W / Stereo 300 mW Power Amplifier
General Description
The LM4850 is an audio power amplifier capable of deliver-
ing 1.5W (typ) of continuous average power into a mono 4
bridged-tied load (BTL) with 1% THD+N or 95mW per chan-
nel
of
continuous
average
power
into
stereo
single-ended (SE) loads with 1% THD+N, using a 5V power
supply.
The LM4850 can automatically switch between mono BTL
and stereo SE modes utilizing a headphone sense pin. It is
ideal for any system that provides both a monaural speaker
output and a stereo line or headphone output
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. Since the LM4850 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems.
The LM4850 features an externally controlled, micropower
consumption shutdown mode and thermal shutdown protec-
tion. The unity-gain stable LM4850’s gain is set by external
gain-setting resistors
Note 1:
An LM4850LD that has been properly mounted to a circuit board will
deliver 1.9W into 3
(at 1% THD+N). The other package options for the
LM4850 will deliver 1.1W into 8
(at 1% THD+N). See
Application Infor-
mation
sections
for
further
information
concerning
the
LM4850MM, and LM4850MT.
32
LM4850LD,
Key Specifications
n
Output Power at 1% THD+N, 1kHz:
n
LM4850LD 3
BTL
n
LM4850LD 4
BTL
n
LM4850MM, MT 4
BTL
n
LM4850LD, MM, MT 8
BTL
n
LM4850LD, MM, MT 8
SE
n
LM4850LD, MM, MT 32
SE
n
THD+N at 1kHz, 95mW into 32
SE
n
Single Supply Operation
n
Shutdown Current
1.9W (typ)
1.7W (typ)
1.5W (typ)
1.1W (typ)
300mW (typ)
95mW (typ)
1% (typ)
2.4 to 5.5V
44μA (typ)
Features
n
Mono 1.5W BTL or stereo 300mW output
n
Headphone sense
n
“Click and pop” suppression circuitry
n
No bootstrap capacitors required
n
Thermal shutdown protection
n
Unity-gain stable
n
LLP, TSSOP, and MSOP packaging
Applications
n
Portable computers
n
Desktop computers
n
PDA’s
n
Handheld games
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
20001031
FIGURE 1. Typical Audio Amplifier Application Circuit
July 2002
L
2002 National Semiconductor Corporation
DS200010
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4850MT/NOPB | 功能描述:IC AMP AUDIO PWR 1.9W AB 14TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線(xiàn)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(lèi)型:H 類(lèi) 輸出類(lèi)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(lèi)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) |
| LM4850MTX/NOPB | 功能描述:IC AMP AUDIO PWR 1.9W AB 14TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線(xiàn)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(lèi)型:H 類(lèi) 輸出類(lèi)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(lèi)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) |
| LM4851 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Integrated Audio Amplifier System |
| LM48510 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Boosted Class D Audio Power Amplifier |
| LM48510_0710 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Boosted Class D Audio Power Amplifier |
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