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參數資料
| 型號： | LM4899MM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 Watt Fully Differential Audio Power Amplifier With Shutdown Select and Fixed 6dB Gain |
| 中文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封裝： | MSOP-10 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 593K |
| 代理商： | LM4899MM |
LM4899
1 Watt Fully Differential Audio Power Amplifier With
Shutdown Select and Fixed 6dB Gain
General Description
The LM4899 is a fully differential audio power amplifier
primarily designed for demanding applications in mobile
phones and other portable communication device applica-
tions. It is capable of delivering 1 watt of continuous average
power to an 8
load with less than 1% distortion (THD+N)
from a 5V
DC power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The LM4899 does not require output
coupling capacitors or bootstrap capacitors, and therefore is
ideally suited for mobile phone and other low voltage appli-
cations where minimal power consumption is a primary re-
quirement.
The LM4899 features a low-power consumption shutdown
mode. To facilitate this, Shutdown may be enabled by either
logic high or low depending on mode selection. Driving the
shutdown mode pin either high or low enables the shutdown
select pin to be driven in a likewise manner to enable Shut-
down. Additionally, the LM4899 features an internal thermal
shutdown protection mechanism.
The LM4899 contains advanced pop & click circuitry which
virtually eliminates noises which would otherwise occur dur-
ing turn-on and turn-off transitions.
The LM4899 has an internally fixed gain of 6dB.
Key Specifications
j Improved PSRR at 217Hz
83dB
j Power Output at 5.0V & 1% THD
1.0W(typ.)
j Power Output at 3.3V & 1% THD
400mW(typ.)
j Shutdown Current
0.1A(typ.)
Features
n
Fully differential amplification
n
Internal-gain-setting resistors
n
Available in space-saving packages micro SMD, MSOP
and LLP
n
Ultra low current shutdown mode
n
Can drive capacitive loads up to 500pF
n
Improved pop & click circuitry which virtually eliminates
noises during turn-on and turn-off transitions
n
2.4 - 5.5V operation
n
No output coupling capacitors, snubber networks or
bootstrap capacitors required
n
Shutdown high or low selectivity
Applications
n
Mobile phones
n
PDAs
n
Portable electronic devices
Connection Diagrams
9 Bump micro SMD Package
9 Bump micro SMD Marking
200645A0
Top View
Order Number LM4899ITL, LM4899ITLX
See NS Package Number TLA09AAA
200645C7
X - Date Code
T - Die Run Traceability
G - Boomer Family
C1 - LM4899ITL
Boomer is a registered trademark of National Semiconductor Corporation.
July 2003
LM4899
1
W
att
Fully
Differential
Audio
Power
Amplifier
W
ith
Shutdown
Select
and
Fixed
6dB
Gain
2003 National Semiconductor Corporation
DS200645
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4899MM/NOPB | 功能描述:IC AMP AUDIO PWR 1.4W AB 10MSOP 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) |
| LM4899MMBD | 功能描述:BOARD EVALUATION LM4899MM RoHS:否 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:- |
| LM48W | 制造商:BEAVERSWOOD 功能描述:MARKER MAG WHITE 40X80MM PK100 |
| LM4900 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode |
| LM4900BG33G100SNY | 制造商:DENSITRON 功能描述:LCD MODULE GRAPHIC 33X100 |
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