SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
APPLICATION INFORMATION
The figure is schematic diagrams of typical notebook computer application circuits.
Right
Speaker
1
Cs
2
3
Ci
Ci
Ci
V
DD
Cs
Ci
Left Line
Audio Source
Left HP
Audio Source
Power Supply
PGND
ROUT-
PV
DD
RHPIN
RLINEIN
RIN
V
DD
LIN
LLINEIN
LHPIN
PV
DD
LOUT-
ROUT+
SE/BTL
HP/LINE
VOLUME
SEDIFF
SEMAX
AGND
BYPASS
FADE
SHUTDOWN
LOUT+
PGND
24
23
22
21
20
19
18
17
16
V
DD
100kΩ
100kΩ
Cc
Power Supply
Right HP
Audio Source
Right Line
Audio Source
4
5
6
7
8
9
10
11
1kΩ
In From DAC
or
Potentiometer
(DC Voltage)
Headphones
C
(BYP)
1kΩ
Ci
Ci
Cc
15
14
13
System
Control
Cs
12
Left
Speaker
Figure 1. SM7511 Application Circuit Using Single-Ended Inputs and Input MUX
Page 8
V.1.3 Revised April 02,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
