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SAMSUNG Proprietary-Contents may change without notice
6-9
NOTE: THE RESISTOR FOR OPT BEAD
N375_IFIC
C124
100NF
C190
100NF
R162
20
R115
560K,1%
SPK101
SPKHA-13
1
2
VOUT2
VOUT3
3
R142
10
7
CE1
CE2
6
5
CE3
GND
4
VDD
8
VOUT1
100PF
C126
U110
4
5
AVCC
1
2
3
R104
CN101
15K
100NF
C142
100NF
C115
L105
C146
C107
6.3V
10UF
C179
1UF
IVCC
100NF
Q105
DTA144EE/TR
2
3
1
VCC
27PF
C186
NC
R132
4
XAUSI2
6
XAUSO
C105
100NF
68
TX_PWR
57
TX_Q
TX_QN
58
TX_SYNC
33
37
VALID_STRB
43
WBORX
WBOTX
44
XAUXI-
5
TMP_MON
66
59
TXDA_REF
TX_BAT
38
34
TX_CLK
36
TX_DATA1
TX_DATA2
35
TX_I
60
TX_IN
61
RX_IN
RX_Q
48
49
RX_QN
31
RX_SYNC
22
SCLK
SEN
24
SI
23
SO
21
TIMER
17
RQTI_COMO
54
RSSI
69
41
RST
55
RT_COMO
RX_CLK
32
RX_DATA
30
RX_I
50
51
MOD_COMD
62
18
MSTR
73
PA_CNT
2
RAUXO-
REC20+
79
77
REC20-
RINGER
1
RITO_COMI
56
IREF
MCLK
19
20
MDAT
12
MICI+
MICI-
11
10
MICO
MIXI
9
MOD
63
MODE_STS
26
BIN
DEMOD
52
45
DGND1
DGND2
46
16
DVDD
D_IF_OUT
42
70
EXT_VREF
25
FSYNC
75
AVDD1
AVDD2
13
14
AVDD3
74
AVDD4
AVDD5
80
47
A_IF_IN
67
BAT_MON
BBCLK
40
39
AGND5
76
AUDCOMRD
3
8
AUDCOMTO
29
AUX_CLK
AUX_DATA
27
AUX_MON
65
28
AUX_STRB
53
U101
AFC_OUT
71
72
AGC_OUT
AGND1
64
AGND2
7
78
AGND3
AGND4
15
100NF
C117
R113
47K
C181
470PF
R139
10K
R111
57.6K,1%
C172
10UF
6.3V
6.3V
10UF
C163
NC
C135
10PF
C111
VBAT
C188
1NF
0
R164
20
7
GND
OUT
5
1
SHDN
VDD
6
R109
U102
+IN
3
4
-IN
BYP
2
GND
8
2
3
1
Q107
R112
680K
C119
100NF
U106-1
R125
1K
C130
100NF
20
47K
R140
R163
100NF
C118
100NF
C177
C133
NC
100K
R134
R126
C120
100NF
390K
C166
1UF
R159
6.3V
10UF
C167
15K
47K
4
GND
8
VDD
1
VOUT1
VOUT2
2
3
VOUT3
R106
U112
CE1
7
6
CE2
CE3
5
4
BYP
CONT
3
2
GND
VIN
1
VOUT
5
U111
C162
2.2UF
16V
10K
R129
C136
68PF
VBAT
C110
100NF
18K,1%
R120
C184
100PF
TH101
10PF
C187
100K
R155
Q104
SI1305DL
3 D
1G
2 S
VCC
R153
100K
C112
100NF
C152
R137
100NF
100K
R114
10K
R124
10K
VBAT
VBAT
C161
1UF
100NF
C191
C176
100NF
20
R130
R119
270K
R131
1NF
C138
100K
6.8NF
C139
C141
100NF
R133
10
R138
1.8K
R107
330K,1%
VCC
2
3
1
C121
27PF
Q101
U106-2
L104
NC
C185
82nH
R116
16V
2.2UF
C171
VIN
1
5
VOUT
100NF
C145
U107
LP2985AIM5-3.3
4
BYPASS
GND
2
ON/OFF
3
4.7NF
C127
100K
6.3V
10UF
C165
VBAT
R144
R135
10K
1UF
6.3V
C151
15PF
C175
C160
10UF
1UF
C149
C108
100NF
Q102
100NF
C170
C168
100NF
VCC
6.3V
2.2K
R103
C159
C158
10UF
6.3V
10UF
C131
36K
R122
22PF
R143
6.8K
C148
47PF
C134
68PF
220K
R154
R145
100K
12PF
C102
C173
10
R157
R110
6.3V
10UF
2.2UF
C178
0
VCC
VCC
16V
VBAT
330K
R118
10NF
AVCC
C125
C129
10K
100NF
NC
R101
R117
C103
L101
82nH
15K
R152
22K
U108
4
ADJ
3
EN
2
GND
1
IN
5
OUT
1UF
C122
2.2UF
C157
R102
1.8K
16V
100NF
V_VCTCXO
VCC
C104
100NF
C109
R147
27ohm
C174
100NF
NC
R158
16V
2.2UF
C155
7
CE1
CE2
6
5
CE3
GND
4
VDD
8
VOUT1
1
2
VOUT2
VOUT3
3
U105
330K
R141
C140
1UF
270K
R123
C156
VAUX
C137
6.3V
10UF
NC
C180
100NF
2.7K
R121
BSE
MIC101
2
1
100NF
C106
6.3V
C116
33UF
C183
1UF
100K
R150
100K
R148
82nH
L102
2
5
6
G
3
4
C169
10UF
6.3V
ESDA6V1W5
1
2
3
4
5
SI3443DV-T1
Q106
1
ZD101
C182
470PF
100K
R146
R160
10K
100NF
C143
100K
AVCC
R108
0
R136
100NF
C101
100K
R149
R151
1K
VCC
100K
R156
1K
C147
1UF
1
3
2
R128
VBAT
Q108
VBAT
C164
10UF
6.3V
XAUXI-
BACKLIGHT
PREAMP_G
HEADSET_SENSE
DATA(0:7)
DISPLAY_CS
MEMOEB
ADD(2)
MEMWEB
DATA(0)
DATA(1)
DATA(2)
DATA(3)
DATA(4)
DATA(5)
DATA(6)
DATA(7)
VAUX
AMP_AUDIO_OUT
MIC_BIAS_EN
XAUXI-
SI2
SCK
SEN
TXDA_REF
DEMOD
AUX_ON
WBDTX
V_DRV_CELL
V_LNA_CELL
VRX
PDM
V_PA_BIAS_CELL
PA_GATE
SEND_END
HS_SENSE
PA_CNT
RX_BAT
PLL_ON
PON_VRF3
V_RF3
V_RF1
VCTCXO_PC
V_VCTCXO
IF_ON
V_IF_VCO
TX_BAT
PON_TX
V_RF2
BATT
ON_SW
HP_PWR
POWER_HOLD
BAT_MON
ON_SW_SENSE
AMP_AUDIO_OUT
VALID_STRB
BIN
TX_BAT
IFIC_RESET
D_IF_OUT
A_IF_IN
RINGER
RX_I
RX_IN
RX_Q
RX_QN
TX_PWR
RSSI
MOD
TX_I
TX_Q
TX_QN
AFC_OUT
TX_AUDIO
XAUXI-
MIC+
RST
TMP_MON
MIC-
RX_AUDIO
HEADSET_SENSE
RX_AUDIO
HEADSET_SENSE
MIC-
MIC+
AMP_EN
RAUXO
REC20+
REC20-
AGC_OUT
RAUXO
REC20-
REC20+
TX_IN
STRB1
SCLK
DO
FSYNC
SO2
MODE_STS
RX_DATA
RX_SYNC
RX_CLK
AUX_CLK
AUX_STRB
AUX_DATA
BBCLK
TX_CLK
TX_SYNC
TX_DATA1
WBDRX
3. IFIC Circuit Diagram
STH-N375 Circuit diagrams