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參數(shù)資料
| 型號： | LM4663MT/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 1007K |
| 代理商： | LM4663MT/NOPB |
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 2A
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 package,
ideal for portable and desktop computer applications.
Key Specifications
n
P
O at THD+N = 1%
2.1W (typ)
n
THD+N at 1kHz at 1 Watt into 4
(Power
Amp)
0.2% (typ)
n
Efficiency at 2 Watt into 4
83% (typ)
n
Efficiency at 250mW into 4
69% (typ)
n
Total quiescent power supply current
22mA (typ)
n
Total shutdown power supply current
2A (typ)
n
THD+N 1kHz, 20mW, 32
(Headphone)
0.15% (typ)
n
Single supply range
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
10126901
Connection Diagram
TSSOP Package
10126925
Top View
Order Number LM4663MT
See NS Package Number MTC24
(TSSOP Package)
BOOMER is a trademark of National Semiconductor Corporation.
April 2006
LM4663
2
W
att
Stereo
Class
D
Audio
Power
Amplifier
with
Stereo
Headphone
Amplifier
2006 National Semiconductor Corporation
DS101269
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4663MTX/NOPB | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| LM4664ITL/NOPB | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4664ITLX/NOPB | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4665MM/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4665MMX/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| LM4664ITL | 制造商:Texas Instruments 功能描述:AMP FILTERLESS CLASS-A 1.1W 4664 |
| LM4665 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Filterless High Efficiency 1W Switching Audio Amplifier |
| LM4665 WAF | 制造商:Texas Instruments 功能描述: |
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