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參數(shù)資料
| 型號(hào)： | LM4873MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.1 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| 封裝： | WAFER |
| 文件頁(yè)數(shù)： | 1/29頁(yè) |
| 文件大小： | 1019K |
| 代理商： | LM4873MWC |
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LM4873
Dual 2.1W Audio Amplifier Plus Stereo Headphone
Function
General Description
The LM4873 is a dual bridge-connected audio power ampli-
fier which, when connected to a 5V supply, will deliver 2.1W
toa4
than 1.0% THD+N. In addition, the headphone input pin
allows the amplifiers to operate in single-ended mode when
driving stereo headphones. A MUX control pin allows selec-
tion between the two stereo sets of amplifier inputs. The
MUX control can also be used to select two different
closed-loop responses.
Boomer audio power amplifiers were designed specifically to
provide high quality output power from a surface mount
package while requiring few external components. To sim-
plify audio system design, the LM4873 combines dual bridge
speaker amplifiers and stereo headphone amplifiers on one
chip.
The LM4873 features an externally controlled, low-power
consumption shutdown mode, a stereo headphone amplifier
mode, and thermal shutdown protection. It also utilizes cir-
cuitry to reduce “clicks and pops” during device turn-on.
Note 1:
An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been
properly mounted to a circuit board will deliver 2.1W into 4
. The other
package options for the LM4873 will deliver 1.1W into 8
. See the Applica-
tion
Information
sections
for
further
information
concerning
the
LM4873MTE-1, LM4873MTE, and the LM4873LQ.
Note 2: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been prop-
erly mounted to a circuit board and forced-air cooled will deliver 2.4W into 3
.
Key Specifications
j PO at 1% THD+N
LM4873LQ, 3
,4 loads
2.4W(typ), 2.1W(typ)
LM4873MTE-1, 3
,4 loads 2.4W(typ), 2.1W(typ)
LM4873IBL, 8
load
1.1W(typ)
LM4873MTE, 4
1.9W(typ)
LM4873, 8
1.1W(typ)
j Single-ended mode THD+N
at 75mW into 32
0.5%(max)
j Shutdown current
0.7A(typ)
j Supply voltage range
2V to 5.5V
Features
n
Input mux control and two separate inputs per channel
n
Stereo headphone amplifier mode
n
“Click and pop” suppression circuitry
n
Thermal shutdown protection circuitry
n
PCB area-saving micro SMD and thin micro SMD
packages
n
TSSOP and exposed-DAP TSSOP and LLP packages
Applications
n
Multimedia monitors
n
Portable and desktop computers
n
Portable audio systems
Typical Application
10099331
Note: Pin out shown for the 28-pin Exposed-DAP TSSOP package. Refer to the Connection Diagrams for the pin out of the 20-pin Exposed-DAP TSSOP,
Exposed-DAP LLP, and micro SMD packages.
Boomer is a registered trademark of National Semiconductor Corporation.
July 2002
LM4873
Dual
2.1W
Audio
Amplifier
Plus
Stereo
Headphone
Function
2002 National Semiconductor Corporation
DS100993
www.national.com
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| LM4876MDC | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM4876MWC | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4874 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
| LM4874MH | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
| LM4874MH/NOPB | 功能描述:IC AMP AUDIO PWR 2.6W AB 20TSSOP 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(jī)，2-通道（立體聲） 在某負(fù)載時(shí)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(diǎn):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) |
| LM4875 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch |
| LM4875M | 功能描述:音頻放大器 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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