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