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參數(shù)資料
| 型號： | LM4682SQ/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC48 |
| 封裝： | LEAD FREE, LLP-48 |
| 文件頁數(shù)： | 1/22頁 |
| 文件大小： | 1033K |
| 代理商： | LM4682SQ/NOPB |
April 21, 2008
LM4682
10 Watt Stereo CLASS D Audio Power Amplifier with Stereo
Headphone Amplifier and DC Volume Control
General Description
The LM4682 is a fully integrated single supply, high efficiency
audio power amplifier solution. The LM4682 utilizes a propri-
etary balanced pulse-width modulation technique that lowers
output noise and THD and improves PSRR when compared
to conventional pulse width modulators.
The LM4682 also features a stereo headphone amplifier that
delivers 60mW into a 32
headset with less than 0.5% THD.
The LM4682's DC volume control has a +30dB to –48dB
range when speakers are driven and a range of +13dB to –
65dB when headphones are connected. All amplifiers are
protected by thermal shutdown. Additionally, all amplifiers in-
corporate output current limiting function to protect their out-
puts from short circuit.
The LM4682 features a low-power consumption shutdown
mode. And its efficiency reaches 85% for a 10W output power
with an 8
load. External heatsink is not required when play-
ing music. The IC features click and pop reduction circuitry
that minimizes audible popping during device turn-on and
turn-off. The LM4682 is available in a 48-lead LLP package,
ideal for portable and desktop computer applications.
Key Specifications
■ P
O at THD+N = 10%, VDD = 14V
10W (typ)
■ THD+N at 1kHz at 6W into 8 (Power Amp) 0.2% (typ)
■ Efficiency at 7W into 8
84% (typ)
■ Total quiescent power supply current
52mA (typ)
■ Total shutdown power supply current
0.1mA (typ)
■ THD+N 1kHz, 20mW, 32 (Headphone)
0.02% (typ)
■ Single supply range
8.5V to 15V
Features
■ Pulse-width modulator.
■ DC Volume Control
■ Stereo headphone amplifier.
■ “Click and pop” suppression circuitry.
■ Micropower shutdown mode.
■ 48 lead LLP package (No heatsink required).
Applications
■ Flat Panel Displays
■ Televisions
■ Multimedia Monitors
Boomer is a registered trademark of National Semiconductor Corporation.
2008 National Semiconductor Corporation
201196
www.national.com
LM4682
10
Watt
Stereo
CLASS
D
Audio
Power
Amplifier
with
Stereo
Headphone
Amplifier
and
DC
Volume
Control
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4682SQX/NOPB | 功能描述:IC AMP AUDIO PWR 10W STER 48LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4684LD/NOPB | 制造商:Texas Instruments 功能描述: |
| LM4700 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Overture⑩ Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes |
| LM4700T | 功能描述:IC AMP AUDIO PWR 30W AB TO220-11 RoHS:否 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Overture™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(fù)載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4700T/NOPB | 制造商:Texas Instruments 功能描述: |
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