– 11–2 –
1
1.2. Circuit Diagram of RF Band-2
VT
CXO
DCST
X
GSMTX
VRF
DCSRX
TX
IN
TX
IP
RXQN
LE
13MHz
_BB
GSM
RX
SXEN
PCSRX
VT
X
VSYN
AFC
RXIP
RXEN1
RXQP
VRF
TX
QP
TX
QN
VRF
CLK
VRF
RXIN
BS
DATA
RF_TXEN
VT
X
modify0522
modify0522
del C1222
E3
D
modify 0529
modify 0529
E3B
E3B
E3B
E3C
E3C
R1293
BEAD
R1226
2k
TP
7
1
TP
5
1
C1224
100n
R1221
39k/1%
C1248
33p
C1228
8n2/PC
R1224
10
U1271
B7744
IN
1
G
2
OUT
3
G
4
TP
4
1
U1261
SAFSE942
IN
1
G
2
OUT
3
G
4
C1271
0p5
B1241
BEAD
R1203
2
20/1%
C1245
22p
R1202
5
10/1%
C1262
15p
R1296
NM
C1214
470p
TP
8
1
C1266
JP
C1204
39p/NPO
U1201
CX74063
RXENA
1
TXENA
2
PCO
3
VCXO_EN
4
PDETVCC
5
VCC1
6
TXCPO
7
TXINP
8
LNA900IN
9
GNDLNA900
10
LNA1800IN
11
PDET
12
LNA1900IN
13
NC
14
NC
15
PAVAPC
16
BBVAPC
17
TXIP
18
TXIN
19
TXQP
20
TXQN
21
TXIFP
22
TXIFN
23
VCC2
24
CAPIP
25
CAPIN
26
CAPQP
27
CAPQN
28
LPFADJ
29
XTALBUF
30
GNDD
31
VCCD
32
VCCF
33
XTAL
34
GNDFN
35
UHFCPO
36
VCCFN_CP
37
SXENA
38
XTALTUNE
39
DATA
40
CLK
41
LE
42
VDDBB
43
UHFBYP
44
UHFTUNE
45
VCCUHF
46
VCC3
47
RXQN
48
RXQP
49
RXIN
50
RXIP
51
VCC4
52
VCCTXVCO
53
TX900
54
TX1800/TX1900
55
TXVCOTUNE
56
R1225
5k6
C1252
180R
C1243
22p
C1249
33n
R1294
JP
C1272
0p5
C1216
100n
C1225
1n
TP
1
1
R1231
NM
C1291
NM
R1206
51
R1292
100nF
R4
100n
C1253
33p
C1250
2p7
C1212
NM
B1222
BEAD
C1223
22p
L1271
3n9
C1229
220p
C1254
18p
R1222
10
C1242
10u
R1204
390
TP
9
1
C1230
100n
C1203
2.2n/X7R
C1215
470p
C1202
39p/NPO
C1211
22p
C1221
22p
L1241
27n
TP10
1
C1247
10p
C1213
NM
R1223
10
C1241
0.1u
R1205
510
TP
2
1
C1227
680p
L1272
3n9
C1244
100n
C1265
15p
L1261
8n2
C1246
100n
C1205
100p
C1267
12p
L1201
180n/0603
R1291
NM
TP
6
1
R1207
10
U1272
B7740
IN
1
G
2
OUT
3
G
4
C1226
10p
TP
3
1
R1295
JP
R1
297
JP
1
2
3
L1211
82n
B1221
BEAD
U1291
VT
CXO
Vcc
4
Vc
1
GND
2
o/p
3
R1232
10k