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1
2
AUDIO AMP.
2V8_NEC_AVDD
Differential AMP
1.07W@8ohm / 210mW@32ohm/ Class AB
1V5_NEC_CORE
A
C700
C701
1u
1u
B6
PS
J6
_MIDI_CS
CS_B_SCS
H4
A2
ADD02
J5
ADD01
A1_RXD
K6
ADD00
A0_DATA_TXD
K7
WR_B_SCLK
_WR
J7
RD_B_SPIMODE
_RD
K8
DATA08
D0_SERINIT
J8
D1
DATA09
H10
DATA10
D2
H9
DATA11
D3
G10
DATA12
D4
B
G9
DATA13
D5
F10
DATA14
D6
F9
D7
U702
DATA15
UPD9993
E10
_MIDI_IRQ
INT_SG_B
F8
INT_DSP_B
B8
BCLK
A8
LRCLK
A7
ASI
B7
ASO
A5
TRSCK
B5
CLK8K
A4
RDATA
D9
VIB
C10
LED
K3
PO0
J3
PO1
K4
PO2
J4
PO3
C
C289
R203
0.1u
20K
AUXIN
2V8_VEXT
2V8_VEXT
R206
C204
20K
NA
R201
D
C200
1M
39p
EAR_SPK_L
AUXIP
5
4
VIN-
1
VCC
JACK_DETECT
OUT
3
VIN+
GND
EAR_SPK_R
2
U200
LMV7291MGX-NOPB
R230
330K
L
H
2V8_VEXT
2V5_JACK
U201
1
4
E
GND
NC
2
3
Vin
VOUT
RPWRON
NCP563Q25T1
C214
C215
0.1u
0.1u
1
2
LGIC(42)-A-5505-10:01
3
4
2V8_NEC_AVDD
C702
2V8_NEC_AVDD
1u
C704
1u
1608
C703
C705
1u
1u
E9
RESET_B
_MIDI_RST
C718
H2
CLKIN
26MHz
1000p
C707
0.47u
R703
20K
C1
LINEOUT_L
F1
C710
0.47u
R707
20K
LINEOUT_R
Close to LM4809LD
E2
VREF
AMP_EJ
D2
IREF
A1
SHORT_K1
K1
SHORT_A1
A10
SHORT_K10
K10
SHORT_A10
B1
NC8
J1
NC9
A2
NC10
B2
NC11
J2
NC12
K2
NC13
C3
VBAT
NC14
D3
NC15
E3
NC16
F3
NC17
G3
NC18
C2
TM0
F2
TM1
RPWRON
B3
TM2
A3
TM3
B4
TM4
C714
C711
0.01u
1u
2V5_JACK
R202
1K
R204
R211
1.5K
12K
HOOK_DETECT
CLOSE TO EARJACK
C205
C206
C277
NA
22u
0.1u
C209
33u
R210
0
R214
100
R213
4.7
C217
33u
R228
0
R216
C212
JACK_DETECT
39p
1M
VCHARGE
REMOVE
INSERT
C216
R217
VBAT
1u
15
R221
Q201
1K
3
4
R222
2
5
20K
1
6
R224
100K
UMX1NTN
-
3
4
5
6
EearJack AMP & SPK Pre AMP
R720
62K
C706
C722
0.1u
330p
R722
62K
C723
330p
Close to LM4666SDX
U705 LM4809LD
7
8
VDD
VOUT1
1
VIN1
6
VOUT2
5
VIN2
2
3
0.2mm
BYPASS
GND
4
9
_SHDN
BGND
C726
AMP_SPK
0.22u
R702
1608
100K
1V5_NEC_CORE
2V8_NEC_AVDD
0.2mm
U701
0.2mm
1
10
VIN
VOUT1
AUX_OUT_L
2
9
EN1
VOUT2
AUX_OUT_R
3
8
EN2
NC3
4
7
BYP
NC2
6
GND
5
11
NC1
BGND
C712
C713
1u
1u
MIC2211-FMYML
VINNORP
VINNORN
J200
3
1
4
5
2
6
7000-2.5G-DB1-G
Iss.
Notice No.
Date
5
7
8
SPK Amplifer
C724
0.1u
C725
0.1u
C727
C728
R726
R723
R724
100K
0.1u
0.1u
NA
NA
2V8_VEXT
U703
AMP_EJ
MAX4684EBC_T
L
AMP DEACTIVE
H
AMP ACTIVE
C4
C2
NO1
IN1
MIDI_AUDIO_SEL
A4
A2
NO2
IN2
C1
C3
NC1
COM1
EAR_SPK_L
A1
A3
NC2
COM2
EAR_SPK_R
2V5_VMIC
C717
1u
R200
1K
R205
C202
C203
10u
39p
2.2K
R209
R208
100
0
C207
39p
C218
R212
0.1u
100
R215
C211
C210
39p
39p
2.2K
CLOSE TO MIC
Section
Date
Sign & Name
Li Cheng Dong
Designer
05/09/09
Li Cheng Dong
Checked
05/09/09
Li Cheng Dong
Approved
05/09/09
Name
LG Electronics Inc.
9
10
VBAT
C720
C721
1u
0.1u
A
1608
U704
LM4666SDX
1
11
VINR-
ROUT1
SPK_R_N
2
VINR+
14
ROUT2
SPK_R_P
10
_SHDN
3
GAIN_SEL
4
LOUT1
SPK_L_N
8
VINL-
9
7
VINL+
LOUT2
SPK_L_P
B
MIDI_AUDIO_SEL
AMP_SPK
AUDIO(TO EARJACK)
AMP DEACTIVE
MIDI(TO EARJACK)
AMP ACTIVE
C
MIC200
C208
1
2
39p
OB4-15L42-C33L
D
Sheet/
Sheets
MODEL
G282
5/5
DRAWING
MP3 / AAC
NAME
DRAWING
Ver 1.0
NO.
LG Electronics Inc.
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