SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
GENERAL DESCRIPTION
The SM7512 is a stereo audio power amplifier that
drives 3 W/channel of continuous RMS power into
a 3-Ω load. Advanced dc volume control minimizes
external components and allows BTL (speaker)
volume control and SE (headphone) volume
control. Notebook and pocket PCs benefit from the
integrated feature set that minimizes external
components without sacrificing functionality.
To simplify design, the speaker volume level is
adjusted by applying a dc voltage to the VOLUME
terminal.
FEATURES
* Advanced DC Volume Control With 2-dB Steps
From -40 dB to 20 dB
- Maximum Volume Setting for SE Mode
- Adjustable SE Volume control
Referenced to BTL Volume Control
* 3 W Into 3-Ω Speakers
APPLICATIONS
* Notebook PC
* LCD Monitors
* Portable DVD Player
PIN ASSIGNMENTS (TOP VIEW)
* Digital photo frame
ROUT-
RPV
DD
RLINEIN
V
DD
LLINEIN
LPV
DD
LOUT-
LPGND
1
2
3
4
5
6
7
8
Thermal
Pad
16
15
14
13
12
11
10
9
RPGND
ROUT+
SE/BTL
VOLUME
GND
BYPASS
SHUTDOWN
LOUT+
SM7512
16PIN
Page 1
V.1.4 Revised May 28,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
