SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
PIN DESCRIPTIONS
No.
1.13
2
3.11
4
5
6
7
8
9
10
12
14
15
16
17
18
19
20
21
22
23
24
Pin Name
PGND
ROUT-
PV
DD
RHPIN
RLINEIN
RIN
V
DD
LIN
LLINEIN
LHPIN
LOUT-
LOUT+
SHUTDOWN
FADE
BYPASS
AGND
SEMAX
SEDIFF
VOLUME
HP/LINE
SE/BTL
ROUT+
I/O
-
O
-
I
I
I
-
I
I
I
O
O
I
I
I
-
I
I
I
I
I
O
Power ground
Right channel negative audio output
Supply voltage terminal for power stage
Right channel headphone input,selected when HP/LINE is held high
Right channel line input, selected when HP/LINE is held low
Common right channel input for fully defferential input. AC ground for
single-ended inputs.
Supply voltage terminal
Common left channel input for fully differential input. AC ground for
single-ended inputs.
Left channel line input, selected when HP/LINE is held low
Left channel headphone input,selected when HP/LINE is held high.
Left channel negative audio output
Left channel positive audio output.
Places the amplifier in shutdown mode if a TTL logic low is placed on
this terminal.
Places the amplifier in fade mode if a logic low is placed on this
termnal; normal operation if a logic high is placed on this terminal.
Tap to voltage divider for internal midsupply bias generator used for
analog reference.
Analog power supply ground
Sets the maximum volume for single ended operation.DC voltage
range is 0 to V
DD
Sets the difference between BTL volume and SE volme. DC voltage
range is 0 to V
DD
Terminal for dc volume control. DC voltage range is 0 to V
DD
Input MUX control. When logic high,RHPIN and LHPIN inputs are
selected. When logic low,RLINEIN and LLINEIN inputs are selected
Output MUX control. When this terminal is high,SE outputs are
selected.When this terminal is low, BTL outputs are selected
Right channel positive audio output.
Function
Page 2
V.1.3 Revised April 02,2007
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
