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參數資料
| 型號： | LM4663 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier |
| 中文描述： | 2瓦特立體聲D類音頻功率放大器的立體聲耳機放大器 |
| 文件頁數： | 1/10頁 |
| 文件大?。?/td> | 606K |
| 代理商： | LM4663 |
LM4663
2 Watt Stereo Class D Audio Power Amplifier with Stereo
Headphone Amplifier
General Description
The LM4663 is a fully integrated single supply, high effi-
ciency Class D audio power amplifier solution. The LM4663
utilizes a continuous time delta-sigma modulation technique
that lowers output noise and THD when compared to con-
ventional pulse width modulators.
The LM4663 also features a stereo headphone amplifier that
delivers 80mW into a 32
headset with less than 0.5% THD.
The LM4663 has two stereo inputs that can be selected to
drive either the headphone amplifier or the Class D amplifier.
All amplifiers are protected with thermal shutdown.
In standby mode, the LM4663 draws an extremely low 2μA
supply current. With a 4
load, the IC’s efficiency for a
250mW power level is 69%, reaching 83% at a power level
of 2W. The IC features click and pop reduction circuitry that
minimizes audible popping during device turn-on and
turn-off. The LM4663 is available in a 24-lead TSSOP pack-
age, ideal for portable and desktop computer applications.
Key Specifications
n
P
O
at THD+N=1%
n
THD+N at 1kHz at 1 Watt into 4
(Power
Amp)
2.1W (typ)
0.2% (typ)
n
Efficiency at 2 Watt into 4
n
Efficiency at 250mW into 4
n
Total quiescent power supply current
n
Total shutdown power supply current
n
THD+N 1kHz, 20mW, 32
(Headphone)
n
Single supply range
83% (typ)
69% (typ)
22mA (typ)
2μA (typ)
0.15% (typ)
4.5V to 5.5V
Features
n
Delta-sigma modulator.
n
Two stereo input selector.
n
“Click and pop” suppression circuitry.
n
Micropower shutdown mode.
n
24 lead TSSOP package (No heatsink required).
n
Stereo headphone amplifier.
Applications
n
Portable computers
n
Desktop computers
n
Multimedia Monitors
Block Diagram
Connection Diagram
BOOMER
is a trademark of National Semiconductor Corporation.
DS101269-1
TSSOP Package
DS101269-2
Top View
Order Number LM4663MT
See NS Package Number MTC24
(TSSOP Package)
January 2000
L
2000 National Semiconductor Corporation
DS101269
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4663MT | 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier |
| LM4766T | Audio Power Amplifier Series Dual 40W Audio Power Amplifier with Mute |
| LM4766 | Audio Power Amplifier Series Dual 40W Audio Power Amplifier with Mute |
| LM4801 | 1W Stereo Audio Amplifier Plus Adjustable LDO |
| LM4801MH | 1W Stereo Audio Amplifier Plus Adjustable LDO |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4663MT | 制造商:Texas Instruments 功能描述:AMP STEREO CLASS D 2W SMD 4663 |
| LM4663MT | 制造商:Texas Instruments 功能描述:AMP STEREO CLASS D 2W SMD 4663 |
| LM4663MT/NOPB | 功能描述:IC AMP AUDIO PWR 2.1W D 24TSSOP 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) |
| LM4663MTX | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM4664 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Filterless High Efficiency 1.1W Switching Audio Amplifier |
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