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PAM8404 参数 Datasheet PDF下载

PAM8404图片预览
型号: PAM8404
PDF下载: 下载PDF文件 查看货源
内容描述: 3W / CH立体声无滤波器D类音频放大器 [3W/CH Filterless Stereo Class-D Audio Amplifier]
分类和应用: 音频放大器
文件页数/大小: 18 页 / 347 K
品牌: PAM [ POWER ANALOG MICOELECTRONICS ]
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PAM8404
3W/CH Filterless Stereo Class-D Audio Amplifier
Features
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3W Output at 10% THD with a 4 Ω Load and
5V Supply
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Supply Voltage from 2.5V to 5.5 V
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Efficiency Up to 89%
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Superior Low Noise without Input
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Few External Components to Save the Space
and Cost
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Short Circuit Protection
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Thermal Shutdown
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Space Saving Packages :
2mm X 2mm WCSP
4mm X 4mm Thin QFN
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Pb-Free Packages
Description
The PAM8404 is a 3W high efficiency filterless
class-D audio amplifier in 4mmX4mm QFN and
2mmX2mm wafer chip scale (WCSP) packages
that requires few external components.
Features like 89% efficiency, -63dB PSRR,
improved RF-rectification immunity, and very
small PCB area make the PAM8404 class-D
amplifier ideal for cellular handset and PDA
applications.
In cellular handsets, the earpiece, speaker phone,
and melody ringer can each be driven by the
PAM8404 . The PAM8404 allows independent gain
by summing signals from seperate sources, and
has as low as 43 μ V A-weighted noise floor.
PAM8404 is available in QFN 4mmx4mm and
WCSP 2mmx2mm packages.
Applications
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n
n
n
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LCD Monitor / TV Projector
Notebook Computers
Portable Speakers
Portable DVD Players, Game Machines
Cellular Phones/Speaker Phones
Typical Application Circuit
VDD
10μF
1μF
PVDD
0.22μF
INR+
PGND
OUTR+
INR+
INR-
0.22μF
ON
Radiated Emissions
INR-
OUTR-
FCC Class B Limit
SDR
G1
G1
G0
OFF
ON
OFF
0.22μF
INL+
PAM8404
SDL
G0
OUTL+
INL+
INL-
0.22μF
INL-
AVDD
AGND
OUTL-
1μF
10μF
VDD
Power Analog Microelectronics
,
Inc
www.poweranalog.com
03/2009 Rev 1.1
1