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參數資料
| 型號： | LM4863 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 音頻放大器 |
| 英文描述： | Dual 2.2W Audio Amplifier Plus Stereo Headphone Function |
| 中文描述： | 雙2.2W的立體聲音頻放大器加上耳機功能 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 513K |
| 代理商： | LM4863 |
LM4863
Dual 2.2W Audio Amplifier Plus Stereo Headphone
Function
General Description
The LM4863 is a dual bridge-connected audio power ampli-
fier which, when connected to a 5V supply, will deliver 2.2W
to a 4
load (Note 1) or 2.5W to a 3
load (Note 2)with less
than 1.0% THD+N. In addition, the headphone input pin al-
lows the amplifiers to operate in single-ended mode to drive
stereo headphones.
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 LM4863 combines dual bridge
speaker amplifiers and stereo headphone amplifiers on one
chip.
The LM4863 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 LM4863MTE which has been properly mounted to the circuit
board will deliver 2.2W into 4
. The other package options for the LM4863
will deliver 1.1W into 8
. See the Application Information section for
LM4863MTE usage information.
Note 2:
An LM4863MTE which has been properly mounted to the circuit
board and forced-air cooled will deliver 2.5W into 3
.
Key Specifications
n
P
O
at 1% THD+N
into 3
(LM4863MTE)
into 4
(LM4863MTE)
into 8
(LM4863)
n
Single-ended mode - THD+N
at 75mW into 32
n
Shutdown current
2.5W(typ)
2.2W(typ)
1.1W(typ)
0.5%(max)
0.7μA(typ)
Features
n
Stereo headphone amplifier mode
n
“Click and pop” suppression circuitry
n
Unity-gain stable
n
Thermal shutdown protection circuitry
n
Exposed-DAP TSSOP, TSSOP, SOIC and DIP
packaging available
Applications
n
Multimedia monitors
n
Portable and desktop computers
n
Portable televisions
Typical Application
Boomer
is a registered trademark of National Semiconductor Corporation.
DS012881-1
*
Refer to the section Proper Selection of External Components, for a detailed discussion of C
B
size.
FIGURE 1. Typical Audio Amplifier Application Circuit
October 1999
L
1999 National Semiconductor Corporation
DS012881
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4863M | Dual 2.2W Audio Amplifier Plus Stereo Headphone Function |
| LM4863MT | Dual 2.2W Audio Amplifier Plus Stereo Headphone Function |
| LM4863MTE | Dual 2.2W Audio Amplifier Plus Stereo Headphone Function |
| LM4863N | Dual 2.2W Audio Amplifier Plus Stereo Headphone Function |
| LM4864 | 300 mW Audio Power Amplifier with Shutdown Mode |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4863_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual 2.2W Audio Amplifier Plus Stereo Headphone Function |
| LM4863A EA WAF | 制造商:Texas Instruments 功能描述: |
| LM4863-D16-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION |
| LM4863LQ | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4863LQ/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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