Panasonic SA-MAX8000 - MIC Circuit

66
12.21. Mic Circuit
A
1
2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14
C
D
B
E
G
H
F
A
C
D
B
E
G
H
F
G
MIC CIRCUIT
SCHEMATIC DIAGRAM - 20
SA-MAX8000GN MIC CIRCUIT
A
TO
MAIN (IO EXPANSION)
CIRCUIT (P1803)
IN SCHEMATIC
DIAGRAM - 1
: +B SIGNAL LINE
: AUX/MIC INPUT SIGNAL LINE
LB1405 J0JBC0000019
0
R1409
MIC VOLUME CONTROL
VR1401
JK1403
K1400
0
C1441
0.01
K1402
0
K1401
0
C1421
0.01
C1423
330P
C1422
330P
LB1407 J0JBC0000019
5
4
2
3
6
1
7
5
4
3
1
2
7
8
JK1402
MIC
AUX IN 2
LB1406 J0JBC0000019
3
2
6
7
4
5
1
9
8
CN1401
C1418
0.01
C1420
0.010.01
C1419
MIC_GND
MIC_IN
MPORT_IN_R
MIC_DET_2
MIC_DET_1
PW_XSW12R0V
MPORT_DET
MPORT_GND
MPORT_IN_L
1
2
3
C1401
50V4.7
C1402
47P
50V0.1
C1403
50V4.7
C1404
C1406
50V1
C1407
0.01
C1408
50V2.2
4700PC1409
C1412 16V10 C1413 50V1
C1415
50V0.1
1000P
C1417
564 123
91113141210
7
8
IC1401
C1AB00003130
IN V+ GND SENSE VREF INT GAIN SW
GAIN1
OUT
BUFFIN
GAIN2
DET
BUFFOUT
BUFFGAIN
LB1404
J0JBC0000019
R1401
15K
R1402
2.2K
R1403
100
R1404 4.7K
6.8KR1405
R1406
100K
R1407
560
R1408
680
R1412
680
R1420
220
MIC AMPLIFIER
C1411 16V10