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參數(shù)資料
| 型號： | LM4850MTX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
| 封裝： | 4.40 MM, PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 1273K |
| 代理商： | LM4850MTX/NOPB |
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
32
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 LM4850LD,
LM4850MM, and LM4850MT.
Key Specifications
n
Output Power at 1% THD+N, 1kHz:
n
LM4850LD 3
BTL
1.9W (typ)
n
LM4850LD 4
BTL
1.7W (typ)
n
LM4850MM, MT 4
BTL
1.5W (typ)
n
LM4850LD, MM, MT 8
BTL
1.1W (typ)
n
LM4850LD, MM, MT 4
SE
300mW (typ)
n
LM4850LD, MM, MT 32
SE
95mW (typ)
n
THD+N at 1kHz, 95mW into 32
SE
1% (typ)
n
Single Supply Operation
2.4 to 5.5V
n
Shutdown Current
44A (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
February 2001
LM4850
Mono
1.
5
W
/
Stereo
300
mW
Power
Amplifier
2001 National Semiconductor Corporation
DS200010
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4851ITL/NOPB | 1.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| LM4851LQ/NOPB | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| LM4852LQ/NOPB | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| LM4852ITL/NOPB | 1.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| LM4854MT/NOPB | 0.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4851 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Integrated Audio Amplifier System |
| LM48510 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Boosted Class D Audio Power Amplifier |
| LM48510_0710 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Boosted Class D Audio Power Amplifier |
| LM48510SD | 功能描述:音頻放大器 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 |
| LM48510SD/NOPB | 功能描述:音頻放大器 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 |
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