36
6.18. 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-MAX8000GS/GM MIC
CIRCUIT
A
TO
MAIN (IO EXPANSION)
CIRCUIT (P1803)
IN SCHEMATIC
DIAGRAM - 1
: +B SIGNAL LINE
: AUX/MIC SIGNAL LINE
LB1405
J0JBC0000019
0
R1409
MIC VOLUME 1
VR1401
JK1403
C1441
0.01
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 2
AUX IN 4
LB1406
J0JBC0000019
3
2
6
7
4
5
1
9
8
CN1401
C1420
0.01
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
4700P
C1409
C1412
16V10
C1413
50V1
C1415
50V0.1
1000P
C1417
5
6
4
1
2
3
9
11
13
14
12
10
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
6.8K
R1405
R1406
100K
R1407
560
R1408
680
R1412
680
R1420
220
MIC AMPLIFIER
C1411
16V10
R1400
680 J0JBC0000019
LB1400
R1411
560
1000P
C1400
C1424
50V2.2
0.01
C1425
R1415
15K
C1426
50V1
C1436
50V1
100K
R1419
R1413
680
220
R1421
50V4.7
C1432
R1417
4.7K
R1418
6.8K
C1430
47P
C1429
50V0.1
C1435
16V10
C1431
4700P
C1434
16V10
2.2K
R1414
5
6
4
1
2
3
9
11
13
14
12
10
7
8
IC1400
C1AB00003130
MIC AMPLIFIER
C1438
50V0.1
IN
GAIN1
BUFFOUT
OUT
BUFFIN
BUFFGAIN
GND
VREF
V+
SENSE
DET
GAIN2
INT
GAIN SW
R1416
100
C1428
50V4.7
MIC VOLUME 2
VR1400
1
2
3
5
4
JK1401
3
1
2
7
8
MIC 1
R1410
0
C1416
0.01
