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參數(shù)資料
| 型號(hào)： | LM4890 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 1 Watt Audio Power Amplifier |
| 中文描述： | 1瓦音頻功率放大器 |
| 文件頁數(shù)： | 1/31頁 |
| 文件大?。?/td> | 1208K |
| 代理商： | LM4890 |
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LM4890
1 Watt Audio Power Amplifier
General Description
The LM4890 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 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 LM4890 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 LM4890 features a low-power consumption shutdown
mode, which is achieved by driving the shutdown pin with
logic low. Additionally, the LM4890 features an internal ther-
mal shutdown protection mechanism.
The LM4890 contains advanced pop & click circuitry which
eliminates noises which would otherwise occur during
turn-on and turn-off transitions.
The LM4890 is unity-gain stable and can be configured by
external gain-setting resistors.
Key Specifications
j
PSRR at 217Hz, V
DD
= 5V (Fig. 1)
j
Power Output at 5.0V & 1% THD
j
Power Output at 3.3V & 1% THD
j
Shutdown Current
62dB(typ.)
1W(typ.)
400mW(typ.)
0.1μA(typ.)
Features
n
Available in space-saving packages: micro SMD, MSOP,
SOIC, and LLP
n
Ultra low current shutdown mode
n
BTL output can drive capacitive loads
n
Improved pop & click circuitry eliminates noises during
turn-on and turn-off transitions
n
2.2 - 5.5V operation
n
No output coupling capacitors, snubber networks or
bootstrap capacitors required
n
Thermal shutdown protection
n
Unity-gain stable
n
External gain configuration capability
Applications
n
Mobile Phones
n
PDAs
n
Portable electronic devices
Connection Diagrams
8 Bump micro SMD
8 bump micro SMD Marking
20019223
Top View
Order Number LM4890IBP, LM4890IBPX
See NS Package Number BPA08DDB
20019270
Top View
X - Date Code
T - Die Traceability
G - Boomer Family
E - LM4890IBP
Boomer
is a registered trademark of National Semiconductor Corporation.
May 2003
L
2003 National Semiconductor Corporation
DS200192
www.national.com
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| LM4893 | 1.1 Watt Audio Power Amplifier |
| LM4893ITL | 1.1 Watt Audio Power Amplifier |
| LM4893ITLX | 1.1 Watt Audio Power Amplifier |
| LM4893MA | 1.1 Watt Audio Power Amplifier |
| LM4893MM | 1.1 Watt Audio Power Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM48901 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Audio Power Amplifier Series |
| LM48901RL | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Audio Power Amplifier Series |
| LM48901RL/NOPB | 功能描述:音頻放大器 Quad Class D Spatial Array RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM48901RLX | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Audio Power Amplifier Series |
| LM48901RLX/NOPB | 功能描述:音頻放大器 Quad Class D Spatial Array RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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