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参数资料
| 型号： | LM4897MM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | MSOP-10 |
| 文件页数： | 1/14页 |
| 文件大小： | 612K |
| 代理商： | LM4897MM/NOPB |
LM4897
1.1 Watt Audio Power Amplifier with Fade-In and
Fade-Out
General Description
The LM4897 is an audio power amplifier primarily designed
for demanding applications in mobile phones and other por-
table communication device applications. It is capable of
delivering 1.1W of continuous average power to an 8
BTL
load with less than 1% distortion (THD+N) from a +5V
DC
power supply.
The LM4897 contains advanced pop and click circuitry that
eliminate noises which would otherwise occur during turn-on
and turn-off transitions. It also contains a fade-in/fade-out
feature that eliminates unnatural sound generated by
asserting/de-asserting the SHUTDOWN pin. The LM4897 is
unity-gain stable and can be configured by external gain-
setting resistors.
The LM4897 features a low-power consumption global shut-
down mode, which is achieved by driving the shutdown pin
with logic low. Additionally, the LM4897 features an internal
thermal shutdown protection mechanism.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The LM4897 does not require output
coupling capacitors or bootstrap capacitors, and therefore is
ideally suited for lower-power portable applications where
minimal space and power consumption are primary require-
ments.
Key Specifications
j Improved PSRR at 5V, 3V, & 217Hz
62dB (typ)
j Higher PO at 5V, THD+N = 1%
1.1W (typ)
j Higher PO at 3V, THD+N = 1%
350mW (typ)
j Shutdown Current
0.1A (typ)
Features
n
No output coupling capacitors, snubber networks or
bootstrap capacitors required
n
Unity gain stable
n
Ultra low current shutdown mode
n
Fade-In/Fade-Out
n
BTL output can drive capacitive loads up to 100pF
n
Advanced pop and click circuitry eliminates noises
during turn-on and turn-off transitions
n
2.6V - 5.5V operation
n
Available in a space-saving SO package
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Connection Diagrams
Mini Small Outline (MSOP) Package
MSOP Marking
20050930
Top View
Order Number LM4897MM
See NS package Number MUB10A
200509D0
Top View
G - Boomer Family
97 - LM4897MM
Boomer is a registered trademark of National Semiconductor Corporation.
May 2003
LM4897
1.1
W
att
Audio
Power
Amplifier
with
Fade-In
and
Fade-Out
2003 National Semiconductor Corporation
DS200509
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4897MMX | 功能描述:IC AMP AUDIO PWR 1.1W AB 10MSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4898 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
| LM4898ITL | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 1W Class-AB 9-Pin uSMD T/R |
| LM4898ITL/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4898ITLBD | 功能描述:BOARD EVALUATION LM4898ITL RoHS:否 类别:编程器，开发系统 >> 评估板 - 音频放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
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