PAM8302A
2.5W Filterless Class-D Mono Audio Amplifier
Key Features
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2.5W Output at 10% THD with a 4 Ω Load
and 5V Power Supply
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Filterless, Low Quiescent Current and Low
EMI
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High Efficiency up to 88%
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Superior Low Noise
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Short Circuit Protection
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Thermal Shutdown
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Few External Components to Save Space
and Cost
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MSOP-8, SOP-8 and DFN3x3 Packages
Available
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Pb-Free Package
General Description
The PAM8302A is a 2.5W class-D mono audio
amplifier. Its low THD+N feature offers high-
quality sound reproduction. The new filterless
architecture allows the device to drive speaker
directly instead of using low-pass output filters,
therefore save system cost and PCB area.
With the same number of external components,
the efficiency of the PAM8302A is much better
than that of class-AB cousins. It can optimize
battery life thus is ideal for portable applications.
The PAM8302A is available in MSOP-8, SOP-8
and DFN3x3 packages.
Applications
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PMP/MP4
GPS
Portable Speakers
Walkie Talkie
Handsfree phones/Speaker Phones
Cellular Phones
Typical Application
1μF
6
VDD
Ci
IN-
Differential
Input
Ci
IN+
ON
OFF
Ri
Ri
4
IN-
VO-
8
3
1
PAM8302A
IN+
VO+
/SD
GND
5
7
Power Analog Microelectronics
,
Inc
www.poweranalog.com
1
09/2008 Rev 1.2
PAM [ POWER ANALOG MICOELECTRONICS ]
