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參數資料
| 型號： | LM4858 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Mono 1.5 W / Stereo 300mW Power Amplifier |
| 中文描述： | 單聲道1.5瓦/ 300mW的立體聲功率放大器 |
| 文件頁數： | 1/17頁 |
| 文件大小： | 683K |
| 代理商： | LM4858 |
LM4858
Mono 1.5 W / Stereo 300mW Power Amplifier
General Description
The LM4858 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 LM4858 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 LM4858 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems.
The LM4858 features an externally controlled, micropower
consumption shutdown mode and thermal shutdown protec-
tion. The unity-gain stable LM4858’s gain is set by external
gain-setting resistors
Key Specifications
n
Output Power at 1% THD+N, 1kHz:
n
LM4858LD 3
BTL
n
LM4858LD 4
BTL
n
LM4858MM 4
BTL
n
LM4858MM,LD 8
BTL
n
LM4858MM,LD 8
SE
n
LM4858MM,LD 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
18μA (typ)
Features
n
Mono 1.5W BTL or stereo 300mW output
n
Logic controlled headphone sense
n
“Click and pop” suppression circuitry
n
No bootstrap capacitors required
n
Thermal shutdown protection
n
Unity-gain stable
n
Available in space-saving MSOP and LLP packaging
Applications
n
Portable computers
n
Desktop computers
n
PDA’s
n
Handheld games
Connection Diagrams
20064729
Top View
10 Lead MSOP
Order Number LM4858MM
See NS Package Number MUB10A
20064728
Top View
14 Lead LLP
Order Number LM4858LD
See NS Package Number LDA14A
Boomer
is a registered trademark of National Semiconductor Corporation.
May 2003
L
2003 National Semiconductor Corporation
DS200647
www.national.com
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|---|---|
| LM4858LD | Mono 1.5 W / Stereo 300mW Power Amplifier |
| LM4888SQ | Dual 2.1W Audio Amplifier Plus Stereo Headphone & 3D Enhancement |
| LM4888 | Dual 2.1W Audio Amplifier Plus Stereo Headphone & 3D Enhancement |
| LM4898LD | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
| LM4898 | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM48580 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver |
| LM48580TL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver |
| LM48580TL/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM48580TLBD/NOPB | 功能描述:音頻 IC 開發工具 LM48580 EVAL BOARD RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| LM48580TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver |
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