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參數資料
| 型號： | LM4843 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Stereo 2W Audio Power Amplifiers with DC Volume Control |
| 中文描述： | 2W的立體聲音頻功率放大器，帶直流音量控制 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 597K |
| 代理商： | LM4843 |
LM4843
Stereo 2W Audio Power Amplifiers
with DC Volume Control
General Description
The LM4843 is a monolithic integrated circuit that provides
DC volume control, and stereo bridged audio power amplifi-
ers capable of producing 2W into 4
(Note 1) with less than
1.0% THD or 2.2W into 3
(Note 2) with less than 1.0%
THD.
Boomer
audio integrated circuits were designed specifically
to provide high quality audio while requiring a minimum
amount of external components. The LM4843 incorporates a
DC volume control with stereo bridged audio power amplifi-
ers making it optimally suited for multimedia monitors, por-
table radios, desktop, and portable computer applications.
The LM4843 features an externally controlled, low-power
consumption shutdown mode, and both a power amplifier
and headphone mute for maximum system flexibility and
performance.
Note 1:
When properly mounted to the circuit board, the LM4843MH will
deliver 2W into 4
. See the Application Information section for LM4843MH
usage information.
Note 2:
LM4843MH that has been properly mounted to the circuit board and
forced-air cooled will deliver 2.2W into 3
.
Key Specifications
n
P
O
at 1% THD+N
n
into 3
n
into 4
n
into 8
n
Shutdown current
2.2W (typ)
2.0W (typ)
1.1W (typ)
0.7μA (typ)
Features
n
Acoustically Enhanced DC Volume Control Taper
n
Stereo bridged power amplifiers
n
“Click and pop” suppression circuitry
n
Thermal shutdown protection circuitry
Applications
n
Portable and Desktop Computers
n
Multimedia Monitors
n
Portable Radios, PDAs, and Portable TVs
Block Diagram
Boomer
is a registered trademark of NationalSemiconductor Corporation.
20038389
FIGURE 1. LM4843 Block Diagram
July 2002
L
2002 National Semiconductor Corporation
DS200383
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4843MH | Stereo 2W Audio Power Amplifiers with DC Volume Control |
| LM4844 | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4845 | Output Capacitor-less Audio Subsystem with Programmable National 3D |
| LM4845ITL | Output Capacitor-less Audio Subsystem with Programmable National 3D |
| LM4850 | Mono 1.5 W / Stereo 300 mW Power Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4843MH | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 2W Audio Power Amplifiers with DC Volume Control |
| LM4843MHX | 功能描述:IC AMP AUDIO PWR 2.2W AB 20TSSOP 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) |
| LM4844 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4844_07 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Stereo 1.2W Audio Sub-System with 3D Enhancement |
| LM4844TL/NOPB | 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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