an12940aa Panasonic Corporation of North America, an12940aa Datasheet - Page 2

• Manufacturer Part Number: an12940aa
• Description: Audio Signal Processing Ic For Notebook Pc
• Manufacturer: Panasonic Corporation of North America

AN12940AA
■ Application Circuit Example
2
HP amp. L-ch.
AGC-On
Level change
Monophonic input
(from modem)
Monophonic input
(from beep)
V
L-ch. in
CC
V
Audio control
volume
CC
AGC
on/off
0.47 µF
4 Ω ~ 8 Ω
0.47 µF
1 µF
SP save
on/off
Out-L
0.47 µF
1 µF
V
10 µF
0.47 µF
0.47 µF
22 kΩ
4.7 µF
CC
0.47 µF
100 kΩ
0.47 µF
20 kΩ
GND
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
V
GND
REF
SP GND
V
V
REF
Control
CC
_SP
Beep
AGC
Mute
Offset
Cancel
SDC00044AEB
Power
Save
Signal
Save
CTL
Det.
Det.
Alarm
AGC
Mute
REG
Standby
V
V
REF
CC
Signal
on/off
V
SP GND
_SP
REF
(SP)
V
GND
GND
CC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
Supply voltage 5 V
1
9
8
7
6
5
4
3
2
0.47 µF
0.47 µF
20 kΩ
0.47 µF
0.047 µF
10 µF
4.7 µF
10 µF
1 mF
47 kΩ
4 Ω ~ 8 Ω
0.47 µF
Audio
control
volume
0.47 µF
Signal
on/off
Out-R
STB
V
CC
Audio automatic detection
on/off control
Automatic detection
output
Audio signal detection
sensitivity
Monophonic input
(from alarm)
Monophonic input
(from PCcard)
HP amp. R-ch.
R-ch. in