SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
GENERAL DESCRIPTION
The SM7498HL is a stereo Class AB audio power
amplifier that drives 3 W/channel of continuous
RMS power into a 16-Ω load. Advanced dc volume
control minimizes external components.TV and
monitor benefit from the integrated feature set that
minimizes external components without sacrificing
functionality.
FEATURES
* 32-step DC volume control
* Mute and shutdown mode
* Short circuit and thermal protection
* SE and BTL selector
* 3 W Into 16 -Ω Speakers
* Input MUX
* Depop circuitry
APPLICATIONS
PIN ASSIGNMENTS (TOP VIEW)
LPGND
LOUT-
LOUT-
MUTE
SHUTDOWN
BYPASS
GND
1
2
3
4
5
6
7
28
27
26
25
24
23
22
LPV
DD
LPGND
LOUT+
LOUT+
NC
LHPIN
LLINEIN
* Small panel LCD TV
* LCD Monitors
* Portable DVD
* Mini speaker
* Digital broadcast system
VOLUME
SE/BTL
HP/LINE
NC
ROUT-
ROUT-
RPGND
8
9
10
11
12
13
14
21
20
19
18
17
16
15
V
DD
RLINEIN
RHPIN
ROUT+
ROUT+
RPGND
RPV
DD
SM7498HL
28PIN
Page 1
V.0.2 April 03,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
