Panasonic SB-PM08 - Audio Interface Circuit Schematics; Mic Amp Circuit Details; Headphone;Mic Jack Circuit Details

SCHEMATIC DIAGRAM - 15
IC450
M65853FPE1
DIGITAL ECHO/ MIC MIXING
HEADPHONE/MIC
JACK CIRCUIT
C479
0.22
R458
33K
R457
56K
1
1232 4 5 6 7 8 9 10 11
R456
47K
C463
100P
R463
21K
R464
330K
C471 100P
C473 100P
R462 330K
R460 330K
R459 330K
R465
21K
R467
1K
R455
1K
C454
0.01
R451
10K
R450
10K
C455
50V1
C459
100P
R453
3.3K
C451
50V2.2
C450
50V4.7
R454
6.8K
C456
50V1
C452
4700P
C460
50V2.2
C462
6.3V100
C461
0.22
C458
0.068
C457
1000P
Q450
2SC2712GRT5T
SWITCHING
C474
0.022
C475
0.15
C472
0.1
C480
10V100
C478
1000P
C477
1000P
C476
1000P
C470
50V2.2
C469
25V10
C468
25V10
C467
50V1
C466
50V1
C465
25V10
R469
100
C464
25V10
R468
100
CN450B
MIC AMP CIRCUIT
L
1
1232 4 5 6 7 8 9 10 11
2
1
3
5
L650
C650
100P
H
6
7
5
4
3
2
1
R650
100
R651
100
R652
100
A
B
C
D
IC101
M5218AFPE3
BUFFER AMP
1234
5 6 7 8
Q101
KRC104STA
TUNER MUTE
E
F
G
H
I
K
L
M
N
O
P
R112
22K
C104
0.1
R115
22K
J
R101
4.7K
C107
0.1
C105
22P
R116
56K
R117
33K
C116
22P
R119
56K
R118
33K
CN450A
3
252322
LPFA/ D
1/ 2Vcc
MIC
VOL
MAIN LOGIC
D/ A
LPF
16Kbit
SRAM
ECHO
F.B VOL.
ECHO
VOL.
LRSTEREO (L+R)/ 2
PHASE
SHIFTER
SURROUND
- COM I/ F
MIC SW
GND Vcc
MCLK
VCFIL
24 26 27 28 29 32 3330 31 34 35 36 37
124568 79101112131415161718192021
38 39 40 4141 42
MIC
VOL
ALC ALC
JK651
HEADPHONES
3.5mm
STEREO
6
4
3
1
2
5
7
L651
C654
100P
R656
10K
R655
10K
C652
0.047
C651
0.047
6
7
4
JK650
MIC
3.5mm
6
4
3
1
2
5
7
C653
100P
L653
L652
L654
L656
L655
For [GK] area.
For [GCS] area.
For [GCS] area.
For [GK] area.
For [GCS] area.
For [GCS] area.
For [GK] area.
CN650
W650
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
:AUDIO SIGNAL LINE
:MIC SIGNAL LINE
5.2V
- 7.7V
7.7V
- 7.7V 0V0V0V
0V 0V 0V 7.7V
0V
0.9V
0.9V1.2V2.5V2.5V2.5V2.5V2.5V2.5V2.5V0V2.5V2.5V2.5V2.5V2.5V0.5V2.5V
2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V2.5V0V5.2V
0V0V2.5V 0V
4.3V
2.1V