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參數資料
| 型號： | LM4856 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運動控制電子 |
| 英文描述： | Integrated Audio Amplifier System |
| 中文描述： | 集成音頻放大器系統 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 1321K |
| 代理商： | LM4856 |
LM4856
Integrated Audio Amplifier System
General Description
The LM4856 is an audio power amplifier system capable of
delivering 1.1W (typ) of continuous average power into a
mono 8
bridged-tied load (BTL) with 1% THD+N and
60mW (typ) per channel of continuous average power into
stereo 32
single-ended (SE) loads with 0.5% THD+N, us-
ing a 5V power supply.
The LM4856 features a 32 step digital volume control and
eight distinct output modes. The digital volume control and
output modes are programmed through a two-wire I
2
C com-
patible control interface, that allows flexibility in routing and
mixing audio channels.
The LM4856 is designed for cellular phone, PDA, and other
portable handheld applications. It delivers high quality output
power from a surface-mount package and requires only
eight external components.
The industry leading micro SMD package only utilizes 2mm
x 2.3mm of PCB space, making the LM4856 the most space
efficient audio sub system available today.
Key Specifications
n
THD+N at 1kHz, 1.1W into 8
BTL
n
THD+N at 1kHz, 60mW into 32
SE
n
Single Supply Operation
1.0% (typ)
0.5% (typ)
2.6 to 5.0V
Features
n
1.1W (typ) output power with 8
mono BTL load
n
60mW (typ) output power with stereo 32
SE loads
n
I
2
C programmable 32 step digital volume control
n
Eight distinct output modes
n
micro-SMD and LLP surface mount packaging
n
"Click and Pop" suppression circuitry
n
Thermal shutdown protection
n
Low shutdown current (0.1uA, typ)
Applications
n
Moblie Phones
n
PDAs
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
20060732
FIGURE 1. Typical Audio Amplifier Application Circuit
May 2004
L
2004 National Semiconductor Corporation
DS200607
www.national.com
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| LM4856LQ | Integrated Audio Amplifier System |
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| LM4861 | 1.1W Audio Power Amplifier with Shutdown Mode |
| LM4861M | 1.1W Audio Power Amplifier with Shutdown Mode |
相關代理商/技術參數 |
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|---|---|
| LM48560 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Voltage Class H Ceramic Speaker Driver with Automatic Level Control |
| LM48560TL | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Voltage Class H Ceramic Speaker Driver with Automatic Level Control |
| LM48560TL/NOPB | 功能描述:音頻放大器 Hi Vltg Class H Cer Speaker Driver 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 |
| LM48560TLEVAL | 功能描述:音頻 IC 開發工具 LM48560TL EVAL BRD 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 |
| LM48560TLEVAL/NOPB | 功能描述:BOARD EVAL FOR LM48560TL RoHS:是 類別:編程器，開發系統 >> 評估板 - 音頻放大器 系列:Boomer® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
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