PAM8007 Datasheet, PDF (1/16 Pages) Power Analog Micoelectronics – Filterless 3W Class-D Stereo Audio Amplifier with DC Volume Control and Headphone Output

PAM8007
Filterless 3W Class-D Stereo Audio Amplifier
with DC Volume Control and Headphone Output
Key Features
n 3W Output at 10% THD with a 4Ω Load and
5V Power Supply
n Filterless, Low Quiescent Current and Low
EMI
n Low THD+N
n 64-step DC Volume Control
n Headphone Output Function
n Superior Low Noise
n Low pop noise
n Efficiency up to 92%
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 VoIP/Speaker Phones
General Description
The PAM8007 is a 3W, class-D audio amplifier
with headphone amplifier. Advanced 64-step DC
volume control minimizes external components
and allows speaker volume control and
headphone volume control. It offers low THD+N,
to produce high-quality sound reproduction. The
new filterless architecture allows the device to
drive the speaker directly, without low-pass output
filters, which will save 30% system cost and 75%
PCB area.
With the same numbers of external components,
the efficiency of the PAM8007 is muc h better than
class-AB cousins. It can extend the battery life
thus be ideal for portable applications.
The PAM8007 is available in a SSOP-24 and SOP-
24 package.
Typical Application
INL
INR
ON
SHDN
ON
MUTE
DC Volume
VDD
PVDDL _{10 μF}
1μF
5
0.47μF ₈
INL
PVDDL
0.47μF ₉
EarInL
2
PGNDL
0.47μF ₁₇
INR
0.47μF ₁₆
EarInR
19
SHDN
PA M 8 0 0 7
3
PGNDL
4
+OUTL
-O- UTL ¹
21
+OUTR
24
-O- UTR
1μF
1μF
6
MUTE
11
V OLUME
7
VDD
13
EarOutR
2 2 0μF
+-
220μF _{+ -}
12
EarOutL
Headphone
10
VDC
14
VREF
15
Line/Ear
PVDDR PGNDR PGNDR GND
20
22
23
18
1μF
H: Headphone
L: Class D
(de fault)
10μF
Power Analog Microelectronics, Inc
www.poweranalog.com
1
01/2012 Rev1.2