PAM8303D Datasheet, PDF (1/17 Pages) Power Analog Micoelectronics – Ultra Low EMI, 3W Filterless Mono Class-D Audio Power Amplifier

PAM8303D
Ultra Low EMI, 3W Filterless
Mono Class-D Audio Power Amplifier
Key Features
General Description
n Ultra Low EMI, -20dB Better Than FCC
Class-B @ 300MHz
n High Efficiency up to 90% @1W with an 8Ω
Speaker
n Shutdown Current <1μA
n 3W@10% THD Output with a 4Ω Load at 5V
Supply
n Demanding Few External Components
n Superior Low Noise without Input
n Supply Voltage from 2.8V to 5.5 V
n Short Circuit Protection
n Thermal Shutdown
n Available in Space Saving Packages:
1.45mmx1.45mm WCSP9, MSOP-8, DFN 3x3
n Pb-Free Package
Applications
The PAM8303D is a 3W mono filterless class-D
amplifier with high PSRR and differential input
that eliminate noise and RF rectification.
Features like 90% efficiency and small PCB area
make the PAM8303D class-D amplifier ideal for
cellular handsets. The filterless architecture
requires no external output filter, fewer external
components, less PCB area and lower system
costs, and simplifies application design.
The PAM8303D features short circuit protection
and thermal shutdown.
The PAM8303D is available in 9-ball WCSP,
MSOP-8 and DFN 3x3 8-pin packages.
n Cellular Phones/Smart Phones
n MP4/MP3
n GPS
n Digital Photo Frame
n Electronic Dictionary
n Portable Game Machines
Level (dBuV/m)
80
FCC Class B
70
60
50
40
30
20
10
0
30.00 100.00
200.00
300.00
400.00 500.00 600.00 700.00
(MHz)
EMI vs Frequency
800.00
900.00 1000.00
Typical Application Circuit
Power in
to PVDD pin
1μF
1μF
to VDD pin
10μF
1μF
1μF
Ci Ri
IN
Single-ended
Input
Ci Ri
ON
OFF
VDD PVDD
IN-
OUT-
PAM8303D
IN+
OUT+
SD
GND
Ci Ri
IN-
Differential
Input
Ci
Ri
IN+
ON
OFF
VDD PVDD
IN-
OUT-
PAM8303D
IN+
OUT+
SD
GND
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.4