SAMHOP Microelectronics Corp.

3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL

APPLICATION INFORMATION

Application circuit using the SM7497 in an LCD monitor with 8Ω speaker outputs and volume control

Page 7

V.0.1 Sep 11,2007

1

2

3

3

2

1

0.1 uf

1.0 uf

1.0 uf

0.1 uf

1 uf

5K

8

SE / BTL

PVDD / VDD

SHUTDOWN

5

10

9

ROUT +

ROUT -

LOUT -

LOUT +

3

4

6

BYPASS

2 , 12

11

1

RLINEIN

LLINEIN

VDD

VDD

7

VOLUME

Right Audio Input

Left Audio Input

470 uf

470 uf

+

10 uf

Figure2. Typical Single-Ended (SE) audio amplifier application circuit for an LCD monitor

SM7497