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參數資料
| 型號： | LM4856LQ/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| 封裝： | LLP-24 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 1321K |
| 代理商： | LM4856LQ/NOPB |
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
2C 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
1.0% (typ)
n
THD+N at 1kHz, 60mW into 32
SE
0.5% (typ)
n
Single Supply Operation
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
2C 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
LM4856
Integrated
Audio
Amplifier
System
2004 National Semiconductor Corporation
DS200607
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4856ITL/NOPB | 1.1 W, 3 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| LM4857GR/NOPB | SPECIALTY CONSUMER CIRCUIT, PBGA49 |
| LM4858MM/NOPB | 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4858LD/NOPB | 1.7 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO14 |
| LM4860MDA | 1.15 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4857 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4857_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4857GR | 功能描述:IC AUDIO SUBSYSTEM W/3D 49UBGA RoHS:否 類別:集成電路 (IC) >> 線性 - 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:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機，2-通道（立體聲） 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4857ITL | 制造商:Texas Instruments 功能描述:1.2W STEREO SUBSYST 3D SMD 4857 |
| LM4857ITL/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 |
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