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参数资料
| 型号： | LM4873MTE/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封装： | 6.50 X 4.40 MM, 0.90 MM HEIGHT, TSSOP-20 |
| 文件页数： | 1/25页 |
| 文件大小： | 963K |
| 代理商： | LM4873MTE/NOPB |
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
Connection Diagrams
10099330
Top View
Order Number LM4873MTE-1
See NS Package Number MXA28A for Exposed-DAP
TSSOP
10099302
Top View
Order Number LM4873MT, LM4873MTE
See NS Package Number MTC20 for TSSOP
See NS Package Number MXA20A for Exposed-DAP
TSSOP
Boomer is a registered trademark of National Semiconductor Corporation.
October 2002
LM4873
Dual
2.1W
Audio
Amplifier
Plus
Stereo
Headphone
Function
2002 National Semiconductor Corporation
DS100993
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LM4873MTEX-1/NOPB | 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 |
| LM4873MT/NOPB | 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| LM4873MTX/NOPB | 1.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| LM4873ITL/NOPB | 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA20 |
| LM4873ITLX/NOPB | 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4873MTEX | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4873MTEX/NOPB | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4873MTEX-1 | 功能描述:IC AMP AUDIO PWR 3W STER 28TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4873MTX | 功能描述:IC AMP AUDIO PWR 3W STER 20TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4874 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:2.1W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdown |
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