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參數資料
| 型號： | LM4851LQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Integrated Audio Amplifier System |
| 中文描述： | 1.5 W, 3 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| 封裝： | LLP-24 |
| 文件頁數： | 1/22頁 |
| 文件大小： | 1126K |
| 代理商： | LM4851LQ |
LM4851
Integrated Audio Amplifier System
General Description
The LM4851 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
115mW (typ) per channel of continuous average power into
stereo 32
BTL loads with 0.5% THD+N, using a 5V power
supply.
The LM4851 features a 32 step digital volume control and
eight distinct output modes. The digital volume control and
output modes are programmed through a three-wire SPI
serial control interface, that allows flexibility in routing and
mixing audio channels. The LM4851 has 3 inputs: one pair
for a two-channel stereo signal and the third for a single-
channel mono input.
The LM4851 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 five
external components.
The industry leading micro SMD package utilizes only 2mm
x 2.3mm of PCB space, making the LM4851 the most space
efficient audio sub system available today.
Key Specifications
n
THD+N at 1kHz, 1.5W into 4
BTL (LQ)
n
THD+N at 1kHz, 1.1W into 8
BTL
n
THD+N at 1kHz, 115mW into 32
BTL
n
Single Supply Operation
1% (typ)
1% (typ)
0.5% (typ)
2.6 to 5.0V
Features
n
Mono 1.1W (typ) and stereo 115mW (typ) output
n
SPI programmable 32 step digital volume control
(-40.5dB to +6dB)
n
Eight distinct SPI programmable output modes
n
micro-SMD and LLP surface mount packaging
n
“Click and pop” suppression circuitry
n
Thermal shutdown protection
n
Low shutdown current (0.1μA, typ)
Applications
n
Mobile phones
n
PDAs
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
20040831
FIGURE 1. Typical Audio Amplifier Application Circuit
December 2002
L
2002 National Semiconductor Corporation
DS200408
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4851IBL | Integrated Audio Amplifier System |
| LM4851ITL | Integrated Audio Amplifier System |
| LM4856ITL | Integrated Audio Amplifier System |
| LM4856 | Integrated Audio Amplifier System |
| LM4856LQ | Integrated Audio Amplifier System |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4851LQ/NOPB | 功能描述:IC AMP AUDIO PWR 1.5W MONO 24LLP RoHS:是 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) |
| LM4852 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Integrated Audio Amplifier System |
| LM48520 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum |
| LM48520TL | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 2-CH Stereo 1.3W Class-D 25-Pin uSMD T/R |
| LM48520TL/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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