D820_schematics.pdf

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GSM850
VR101
VC040205X150R
2.8V
+VCC_SYN
RFS100
KMS-512
ANT101
-
ANT102
-
G
1
A
2
C
3
G
4
GSM900RXTX
VR102
VC040205X150R
1 1
2 2
3
3
4
4
1 1
2 2
3 3
4
4
R127
0
C102
9PF
50V
L141
33nH
C147
100NF
16V
2.8V
+VCC_SYN
L118
NC
R138
0
VCTL2 15
PB2 16
PA2
50V
VCTL1 14
13
L121
82nH
L144
18nH
C103
8PF
J_ANT
FESW1
FESW2
FESW3
C158
NC
C159
NC
C160
33PF
25V
R135
R136
R137
10nH
10nH
0
12
9
13
10
11
7
6
1
8
ANT
GSM900RX 4
VC1
GSM900RX 5
VC2
DCSRX 1
VC3
DCSRX 14
DCS|PCSTX
PCSRX1 2
850GSM|GSM900TX
850GSMRX
PCSRX2 3
850GSMRX
G
15
GND
GND
PC2
GND
GND
12
F101
C104
NC
C105
33PF
50V
3
NJG1524APC1
PC1
GND
4
VCTL1
9
10
U100
GND
11
2
PB1
LMG004W-5129A
5
NC
C107
39PF
50V
6
7
8
PA1
GSM900 RX
C106
33PF
50V
L101
10nH
FESW1
Tx(GSM900)
Tx(DCS1800/1900)
RX(GSM900)
Rx(DCS1800)
Rx(PCS1900)
H
L
L
L
L
FESW2
L
H
L
L
L
FESW3
L
L(H)
L
L
H
2.8V
+VCC_SYN
L103
0
2.8V
+VCC_SYN
C110
NC
L140
C112
33PF
50V
C109
7PF
50V
PON_3587_SYNTH
PCS Rx
NC
R129
100,1%
3
L137
5.6nH
TCX100
TCO-5871U 26MHz
OUT GND
2
C118
33PF
50V
C116
100NF
16V
C120
C146
NC
4
VCC
VCON
1
C114
100PF
50V
R103
R105
10
10K
DCS Rx
C121
18PF
50V
NC
30
26
24
28
29
27
VCCCP
VCCRFLO
VCCSYN
EXTRES
RFTUNE
GNDREF
REFIN
LBIB
CTRL
LBIA
DCS_TX
C161
1.8PF
50V
R132
NC
L135
C162
1.8PF
50V
C145
NC
3.3nH
C157
47PF
50V
GSM_TX
DCS
C127
220PF
16V
2.8V
+VDD_RX_TX
PON_PA
C131
220PF
16V
typical 3.8V
VBAT
F103
NFM18PC104R1C3D
3
2
TA100
47UF
6.3V
C136
12PF
50V
C135
10NF
16V
PAM100
TQM7M5004
MODE_SELECT
RAMP
R112
10K
1
3
4
5
6
7
8
DCS/PCSIN
BAND
TX_EN
VBATT
MODE
VRAMP
VBIAS
DCS/PCSOUT
C153
12
VCC
NC
C166
150PF
DCS_TX
14
C138
33PF
50V
1
PON_SW
R128
0
R109
NC
C126
0.5PF
50V
31
R130
0
L139
1.5nH
VCCRF
SWBIA
SWBIB
25
23
22
21
C122
18PF
50V
L106
6.2nH
AFC
C123
NC
32
20
CLKFDBX
REFVCC
34
GNDRF1
CLKOUT
HBIA
HBIB
GNFRF2
LBO
EN
TXVCC
CLK
SWON
DATA
GND2
GND3
GND4
NC1
NC2
C124
100PF
50V
D_REF_CLK
33
35
36
U102
UAA3587EHN/C2
17
PGMDIV
VDDL
GNDL
18
19
+VDD_IO_LOW
37
38
15
16
RF_EN
39
14
RF_CLK
RF_DATA
R111
C128
NC
0
2.8V
+VDD_RX_TX
40
46 45 44 43 42
GNDRF3
GNDRF4
VCCIF
FESW1
FESW2
FESW3
HBO
QB
IB
4
5
6
IA
9
10
2
7
1
3
8
QA
41
GND1
11
12
13
C134
100PF
50V
C148
270PF
50V
R113
C163
C149
NC
50V
L133
12nH
33PF
100K
R114
0
RX_TX_QP
10
C152
33PF
50V
L145
0.5PF
R116
0
FESW1
FESW2
FESW3
R117
0
RX_TX_IN
RX_TX_IP
R115
0
RX_TX_QN
9 GSM850/900IN
GSM850/900OUT
GND
GND
GND
GND
GND
GND
2 1113 15 16 17
L138
18nH
C144
NC
2.8V
+VDD_RX_TX
U104
UPG2012TK-E2
6
5
4
VDD
IN
VCONT
OUT1
GND
OUT2
1
2
C139
39PF
50V
L142
10nH
8
6
4
G2
F102
7
OUT1
IN1
1
2
G1
IN2
G4 G3
OUT2
L143
10nH
C165
39PF
50V
1
2
U105
UPG2012TK-E2
OUT1
GND
OUT2
VDD
IN
VCONT
6
5
4
GSM_TX
GSM900RXTX
VR100
VC040205X150R
2.8V
+VDD_RX_TX
5
3
C141
47PF
50V
3
3
C142
47PF
50V
C156
NC
FAR-G5ED-897M50-D2DE
L117
22NH
Title
RF Schematic
SGH-D828/RF
G
Date:
Sheet
1 of 8

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