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Power Analog Micoelectronics

PAM8403 Datasheet Preview

PAM8403 Datasheet

Filterless 3W Class-D Stereo Audio Amplifier

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PAM8403
Filterless 3W Class-D Stereo Audio Amplifier
Key Features
n 3W Output at 10% THD with a 4Ω Load and
www.datashee5t4Vu.Pcoomwer Supply
n Filterless, Low Quiescent Current and Low
EMI
n Low THD+N
n Superior Low Noise
n Efficiency up to 90%
n Short Circuit Protection
n Thermal Shutdown
n Few External Components to Save the
Space and Cost
n Pb-Free Package
Applications
n LCD Monitors / TV Projectors
n Notebook Computers
n Portable Speakers
n Portable DVD Players, Game Machines
n Cellular Phones/Speaker Phones
General Description
The PAM8403 is a 3W, class-D audio amplifier. It
offers low THD+N, allowing it to achieve high-
quality sound reproduction. The new filterless
architecture allows the device to drive the speaker
directly, requiring no low-pass output filters,thus
to save the system cost and PCB area.
With the same numbers of external components,
the efficiency of the PAM8403 is much better than
that of class-AB cousins. It can extend the battery
life, ideal for portable applications.
The PAM8403 is available in SOP-16 package.
Typical Application
VDD
PVDD
1μF
1μF
4 70μ F
1μF
0.47μF Ri
I NL
6
VDD
7 INL
4 13
PVDD PVDD
1
+OUT_L
8
VREF
-OUT_L 3
0.1 μF
0. 47μ F
10
INR INR
Ri
PAM8403
-OUT_R 14
SHDN
MUTE
12 SHDN
5 MUTE
+OUT_R 16
GND NC PGNDPGND
11
92
15
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs Output Power
RL=4Ω
RL=8Ω
0.5 1 1.5 2 2.5
Output Pow er(W)
3
Radiated Emissions
FCC Class B Limit
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.3




Power Analog Micoelectronics

PAM8403 Datasheet Preview

PAM8403 Datasheet

Filterless 3W Class-D Stereo Audio Amplifier

No Preview Available !

PAM8403
Filterless 3W Class-D Stereo Audio Amplifier
Block Diagram
www.datasheet4u.com
VDD
VDD/2
INR
PVDD PGND
+
-
DRIVER
MODULATOR
+OUT_R
-OUT_R
MUTE
SHDN
INL +
-
VDD/2
THERMAL
PROTECTION
INTERNAL
OSCILLATOR
BIAS AND
REFERENCES
VREF
OSC
CURRENT
PROTECTION
MODULATOR
DRIVER
+OUT_L
-OUT_L
GND
Pin Configuration & Marking Information
PVDD PGND
Top View
SOP-16
1 16
2 15
X: Internal Code
3 14 A: Assembly Code
T: Testing Code
4 13 Y: Year
WW: Week
5 12 LL: Internal Code
6 11
7 10
89
Power Analog Microelectronics,Inc
www.poweranalog.com
2
09/2008 Rev 1.3


Part Number PAM8403
Description Filterless 3W Class-D Stereo Audio Amplifier
Maker Power Analog Micoelectronics
PDF Download

PAM8403 Datasheet PDF






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