SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
PIN DESCRIPTIONS
No.
1.27
2.3
4
5
6
7
8
9
10
12.13
14,16
15
17.18
19
20
21
22
23
25.26
28
11.24
Pin Name
LPGND
LOUT-
MUTE
SHUTDOWN
BYPASS
GND
VOLUME
SE/BTL
HP/LINE
ROUT-
RPGND
RPV
DD
ROUT+
RHPIN
RLINEIN
V
DD
LLINEIN
LHPIN
LOUT+
LPV
DD
NC
I/O
-
O
I
I
I
-
I
I
I
O
-
-
O
I
I
-
I
I
O
-
Left channel power ground
Function
Left channel negative audio output
Places the amplifier in mute mode if a TTL logic low is placed on this
terminal
Places the amplifier in shutdown mode if a TTL logic low is placed on
this terminal
Tap to voltage divider for internal midsupply bias generator used for
analog reference.
Power ground
Terminal for dc volume control. DC voltage range is 0V to 5V
Output MUX control. When this terminal is high, SE outputs are
selected. When this terminal is low, BTL outputs are selected.
Input MUX control. When logic high, RHPIN and LHPIN inputs are
selected. When logic low, RLINEIN and LLINEIN inputs are selected.
Right channel negative audio output
Right channel power ground
Supply voltage terminal for right power stage
Right channel positive audio output
Right channel input, selected when HP/LINE is held high
Right channel input, selected when HP/LINE is held low
Supply voltage terminal
Left channel input, selected when HP/LINE is held low
Left channel input, selected when HP/LINE is held high
Left channel positive audio output
Supply voltage terminal for left power stage
No connection
Page 2
V.0.2 April 03,2007