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11-9
CN101
NOTE: LAYOUT OF U104 IS CRITICAL
U114
Q108(123)
R161
NOTE: GPIO INTERNAL PULL-UP
L104
ZD101
NOTE: THE RESISTOR FOR OPT BEAD
NOTE:PLACE THESE CAP. AS CLOSE AS
C189
TH101
D101
POSSIBLE TO IFIC MIC+ AND MIC- PINS
STH-N271_IFIC
L103
220UH
220K
R155
R136
6.3V
10UF
C107
1
2
3
4
5
100K
1
2
3
4
5
Q102
CN101
100NF
C179
C158
10UF
6.3V
NC
C180
27PF
C186
NC
C185
C141
100NF
C104
100NF
1NF
100NF
C115
C183
R145
100K
100K
R148
C120
100NF
VCC
10
R157
C124
100NF
6.3V
10UF
C163
C111
R115
560K,1%
R135
100K
10PF
Q105
2
3
1
R132
100K
100NF
C175
220NF
C125
R121
C172
10UF
6.3V
0
2.7K
R108
R122
C119
100NF
36K
22PF
C131
330K
R118
8
7
GND
OUT
5
1
SHDN
VDD
6
U102
+IN
3
4
-IN
BYP
2
GND
C130
100NF
2
3
1
Q101
VBAT
R113
47K
4
BYP
CONT
3
2
GND
VIN
1
VOUT
5
U111
R124
10K
10K
100NF
C137
R101
C112
VAUX
330K,1%
R138
100NF
AVCC
R112
680K
1K
R151
G2
S1
1
4
S2
R160
0
U109
D1 6
3 D2
2 G1
5
R161
AVCC
NC
C164
10UF
6.3V
330K
R141
C166
1UF
R110
6.3V
10UF
C173
0
6.8NF
C139
VCC
R104
250V
100NF
C150
15K
91K,1%
C103
NC
100K
R149
R159
1UF
C122
C161
1UF
VBAT
C133
NC
36K
R154
10K
C110
100NF
R139
0
R116
390K
R134
VBAT
4.7NF
C127
37
VALID_STRB
43
WBORX
WBOTX
44
XAUXI-
5
4
XAUSI2
6
XAUSO
36
TX_DATA1
TX_DATA2
35
TX_I
60
TX_IN
61
68
TX_PWR
57
TX_Q
TX_QN
58
TX_SYNC
33
24
SI
23
SO
21
TIMER
17
TMP_MON
66
59
TXDA_REF
TX_BAT
38
34
TX_CLK
32
RX_DATA
30
RX_I
50
51
RX_IN
RX_Q
48
49
RX_QN
31
RX_SYNC
22
SCLK
SEN
79
77
REC20-
RINGER
1
RIT
O_COMI
56
RQTI_COMO
54
RSSI
69
41
RST
55
R
T
_COMO
RX_CLK
10
MICO
MIXI
9
MOD
63
MODE_STS
26
MOD_COMD
62
18
MSTR
73
PA_CNT
2
RAUXO-
REC20+
42
70
EXT_VREF
25
FSYNC
75
IREF
MCLK
19
20
MDA
T
12
MICI+
MICI-
11
47
A_IF_IN
67
BAT_MON
BBCLK
40
39
BIN
DEMOD
52
45
DGND1
DGND2
46
16
DVDD
D_IF_OUT
27
AUX_MON
65
28
AUX_STRB
53
A
VDD1
A
VDD2
13
14
A
VDD3
74
AVDD4
AVDD5
80
64
AGND2
7
78
AGND3
AGND4
15
AGND5
76
AUDCOMRD
3
8
AUDCOMT
O
29
AUX_CLK
AUX_DATA
U101
AFC_OUT
71
72
AGC_OUT
AGND1
270K
R123
1K
R128
R147
27ohm
10NF
C144
NC
C153
R153
100K
VBAT
100NF
C177
C170
V_VCTCXO
100NF
C118
100NF
R106
15K
C168
100NF
27PF
C189
R130
100K
AVCC
100K
R146
C129
10NF
6.3V
10UF
C159
NC
C135
VCC
R143
6.8K
C116
33UF
6.3V
L101
82nH
C114
NC
100K
R150
CE1
7
6
CE2
CE3
5
4
GND
8
VDD
1
VOUT1
VOUT2
2
3
VOUT3
U112
C182
470PF
R125
86.6K,1%
2.2UF
C171
C128
100NF
16V
Q107
2
3
1
D2
2 G1
5
G2
S1
1
4
S2
U106
D1 6
3
C174
2
VOUT2
VOUT3
3
100NF
7
CE1
CE2
6
5
CE3
GND
4
VDD
8
VOUT1
1
C148
100NF
U110
27PF
C106
VBAT
C147
1UF
NC
R158
100K
VCC
R103
VBAT
R144
VAUX
2.2K
C160
10UF
6.3V
100NF
C117
6.3V
10UF
C156
10
1
2
5
6
G
3
4
R142
ZD101
1
2
3
4
5
Q106
2.2UF
C157
16V
C181
470PF
2
R111
57.6K,1%
Q108
1
3
NC
C152
SPK101
SPKHA-13
10K
R127
VCC
R119
270K
R114
10K
U107
1
2
3
45
6
C134
68PF
MIC
MIC101
2
1
R152
22K
C121
27PF
C176
100NF
VCC
R126
10K
TH101
100NF
C142
1UF
C146
100NF
C145
3 D
1G
2 S
C143
100NF
2.2UF
C178
Q104
C149
AVCC
16V
1UF
R156
100K
C105
100NF
10
3
2
GND
1
IN
5
OUT
R133
U108
4
ADJ
EN
1UF
VCC
C151
82nH
L102
0
100PF
C126
R109
1
2
VOUT2
VOUT3
3
6.3V
10UF
C167
7
CE1
CE2
6
5
CE3
GND
4
VDD
8
VOUT1
12PF
C102
U105
1NF
10K
R129
AVCC
C188
C136
68PF
R105
NC
C162
2.2UF
16V
VOUT
5
U114
4
BYP
CONT
3
2
GND
VIN
1
D2
3
G1
2
G2 5
1 S1
S2
4
3
1
U113
6
D1
Q103
2
D101
1SS376-TE-17
VDD
VOUT
18
VR
17
VSS
C154
NC
4
RS
5
6
RW_WRB
V0
29
25
V1
V2
26
27
V3
V4
28
16
DB5
14
DB6
DB7
15
33
EL1
EL2
34
E_RDB
7
32
NC
NC
1
RESETB
C68
CS1B
2
3
CS2
8
DB0
DB1
9
DB2
10
11
DB3
DB4
12
13
22
C1+
C1-
21
23
C2+
C2-
24
20
C3+
C4+
19
31
U103
15K
R117
R107
1.8K
C108
100NF
VBAT
6.3V
10UF
C165
100NF
C101
1NF
C138
R120
IVCC
47K
R140
18K,1%
100NF
C109
VBAT
NC
C113
100K
R131
CHV
7
3
ENA
8
LDR
2
OSC
6
OUT1
OUT2
5
4
VDD
VSS
1
U104
C140
1UF
1.8K
R102
C187
C184
100PF
10PF
16V
2.2UF
C155
AMP_AUDIO_OUT
WBDTX
SEND_END
C169
10UF
6.3V
HS_SENSE
XAUXI-
AMP_AUDIO_OUT
XAUXI-
SI2
SCK
SEN
TXDA_REF
DEMOD
HEADSET_SENSE
PA_GATE
AUX_ON
V_LNA_PCS
V_LNA_CELL
VCTCXO_PC
V_VCTCXO
IF_ON
V_IF_VCO
TX_BAT
PON_TX
V_DRV_CELL
V_DRV_PCS
RF_BAND
V_DET
V_RF2
RF_BAND_PCS
BATT
ON_SW
HP_PWR
POWER_HOLD
RF_BAND_PCS
RF_BAND
PDM
V_PA_BIAS_PCS
V_PA_BIAS_CELL
VRX
BAT_MON
ON_SW_SENSE
DATA(7)
DISPLAY_CS
ADD(2)
MEMWEB
MEMOEB
DATA(0:15)
EL_EN
RST
TMP_MON
MIC+
MIC-
MIC-
PA_CNT
V_F_EN
V_F
RX_BAT
PLL_ON
PON_VRF3
V_RF3
V_RF1
PREAMP_G
RF_BAND
RF_BAND
RF_BAND_PCS
TX_DATA1
WBDRX
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+
DATA(0)
DATA(1)
DATA(2)
DATA(3)
DATA(4)
DATA(5)
DATA(6)
RX_AUDIO
HEADSET_SENSE
RX_AUDIO
HEADSET_SENSE
MIC_BIAS_EN
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
3. STH-N271 IFIC Circuit Diagram
STH-N271 Circuit diagrams