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參數資料
| 型號： | LM4893M |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數： | 1/22頁 |
| 文件大?。?/td> | 687K |
| 代理商： | LM4893M |
LM4893
1.1 Watt Audio Power Amplifier
General Description
The LM4893 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 1.1 watt of continuous average power to an 8
BTL 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 LM4893 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.
The LM4893 features a low-power consumption global shut-
down mode, which is achieved by driving the shutdown pin
with logic low. Additionally, the LM4893 features an internal
thermal shutdown protection mechanism.
The LM4893 contains advanced pop & click circuitry which
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4893 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
j Improved PSRR at 5V, 3V, & 217Hz
62dB (typ)
j Higher Power Output at 5V & 1% THD
1.1W (typ)
j Higher Power Output at 3V & 1% THD
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
Instantaneous turn-on time
n
BTL output can drive capacitive loads up to 100pF
n
Advanced pop & click circuitry eliminates noises during
turn-on and turn-off transitions
n
2.2V - 5.5V operation
n
Available in space-saving SMD, SO, and MSOP
packages
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Typical Application
Boomer is a registered trademark of National Semiconductor Corporation.
20038001
FIGURE 1. Typical Audio Amplifier Application Circuit
August 2002
LM4893
1.1
W
att
Audio
Power
Amplifier
2002 National Semiconductor Corporation
DS200380
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4893MA | 制造商:Texas Instruments 功能描述:AMP, POWER AUDIO, 1.1W, SMD, SOIC8 |
| LM4893MA/NOPB | 功能描述:IC AMP AUDIO PWR 1.1W MONO 8SOIC 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) |
| LM4893MABD | 功能描述:BOARD EVALUATION LM4893MA 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:- |
| LM4893MM | 制造商:Texas Instruments 功能描述:AMP AUDIO POWER 1.1W SMD LLP-10 |
| LM4893MM/NOPB | 功能描述:IC AMP AUDIO PWR 1.1W 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) |
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