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SGH-F300_REV2.1
RFS100
MHC-320
TP_ANT
1
2
3
4
5
6
A TP A
1
2
3
4
5
6
R121 0
ANT
C101 C102
VBAT NC NC TP_GND
TP
C103
B VBAT RTX_QP GSM74137_OUT 22pF B
VRF_2.8V RTX_QN DCS74137_OUT
PAM100 RTX_IN
RTX_IP
SKY77331 MOD_SEL L100
39nH
1 ENA COUP_OUT 16 R100 24
PAC_EN TX_FB
C104 0.012nF 2 DCS|PCS_IN GND 15
DCS74137_OUT
32
33
34
35
36
37
38
39
40
41
C105
3 BS DCS|PCS_OUT 14 R101 0 47UF
VCC3
LOMON
VDIGENA
IP|TX_IP
IM|TX_IM
QM|TX_QM
QP|TX_QP
TXLB
TXHB
GND
BAND_SEL DPCS_OUT 10V C106
4 VSUP GND 13 C107 C108 100nF 31
NC VCC1
1
30 2
2.2UF 22pF NC TXENA TX_EN
5 VBATT GSM_OUT 12 L101 4.3nH 29 3
VPC DUF100
GSM_OUT NC VPC
28
U100 4
LMSP43HA-541 13
0.002nF
NC 850LNA_N
R102 2.2K 6 VPC GND 11
220
220
27 5
VPC XOENA 26
CHIPENA
SKY74137 850LNA_P
6
1 GSM1900_RX1 ANT VC1 11
NC
C109 33PF 7 GSMIN SX_EN SXENA 900LNA_N GSM_TX_EN
GSM74137_OUT GND 10 SERCLK
25
CLK 900LNA_P
7
2 GSM1900_RX2 VC2 9 DCS_TX_EN
24 8 3 GSM1800_RX1
SERLE
NC
U857
LATCHENABLE 1800LNA_N
R103 0 8 RSVD GND 9 23 9 4 GSM1800_RX2
13MHZ_26MHZ|XBUF
C SAT_DET SERDAT DATAIN 1800LNA_P C
C110
C111
GND 22 10 L102 5 GSM900_RX1
GSM900_TX 10
R104
R105
21
VCC2 1900LNA_N
11 10nH 6 GSM900_RX2
GSM_OUT
17 CLK26M XTAL 1900LNA_P 8 DPCS_OUT
GSM1800/1900_TX
LPFADJ
COMPN
COMPP
TXRFIN
RXENA
G G G G G
XTUNE
0.01NF
VAPC
0.01NF
VCC4
L103 C112
C113
C115
16 15 14 12 7
470PF
10UF
33PF
10nF
NC
10nH 0.75PF
NC
NC
10V
20
19
18
17
16
15
14
13
12
C114
100nF L104
RX_EN 6.2nH
TX_FB
R109
C118
C119
C120
R106
C116
R110
VAPC
10K R108 C117
L105
R107
39K,1%
SAT_DET 6.2nH NC
0.12nF
100PF
L106
C121 4.7nH