SAMHOP Microelectronics Corp.

3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL

Application circuit using the SM7497 in an LCD monitor with 16Ω speaker outputs and volume control

APPLICATION INFORMATION

Figure 1. Typical Bridge-Tied-Load(BTL) audio amplifier application circuit for an LCD monitor

Page 6

V.0.1 Sep 11,2007

1

2

3

3

2

1

D

C

B

A

0.1 uf

1.0 uf

1.0 uf

0.1 uf

1 uf

5K

8

SE / BTL

SHUTDOWN

5

10

9

ROUT +

PVDD / VDD

ROUT -

LOUT -

LOUT +

3

4

6

BYPASS

2 , 12

11

1

RLINEIN

LLINEIN

VDD

VDD

7

VOLUME

Right Audio Input

Left Audio Input

SM7498HL

+

10 uf

SM7497

Figure 1. Typical Bridge-Tied-Load(BTL) audio amplifier application circuit for an LCD monitor