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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure . Audio part schematics
SUMY0010604
MIC
C448
33p
C445
22n
G1
G2
3
G3
4
6
G4
OUT
1
5
PWR
MIC400
SPM0204LE5-QB
2
C449
10p
C447
DNI
C446
22n
C442
10u
C443
47p
MICBIAS
MAIN_MIC_1P
MAIN_MIC_1N
EUSY0250501
HOOK SENSE
5.1K
R419
R414
100K
C456
0.1u
NCS2200SQ2T2G
U403
GND
2
OUT
1
5
VCC
VIN+
3
4
VIN-
1M
R418
VREG_MSMP_2.7V
10K
R416
HOOK_SENSE_N
EAR_MIC_P