Samsung SCH-A310 Service Manual page 92

Circuit Diagrams
13-4 RF Circuit Diagram 2
1 2
V_PD
TXIF_PCS_263.6MHz
TXIF_CELLULAR_228.6MHz
U501
A R401
3.3NF
1K
Q_OUT
Q_OUT_N
C415
C416
470PF C417
470PF
C418
1NF
1NF
I_OUT
PA_IREF
I_OUT_N
C425
C428
470PF 20 29 32
470PF
5
1 TX_Q
B VDDA1
9
2
TX_QB VDDA2
3 10
TX_I VDDA3
R403
4 11
TX_IB VDDA4
0
25
16
TCXO_IN TCXO VDDA5
17
18
PA_CP PA_ON VDDA6
21
13
AB_SEL AB_SEL PCSA_OUT
8 12
TX_AGC VCONTROL PCSB_OUT
24
15
SBCK SBCK CELLA_OUT
22
14
SBST SBST CELLB_OUT
23
LOCK_DET 26
SBDT SBDT
27
6 IF_BPF1
PD_ISET
C440 7 28
IF_BPF2 PD_OUT
7PF
3334 35 36 30 31 19
U400
R405
RFT3100-32BCCPF-MT
1K
C450 D420
C451
C BAR63-02W-E6327
4PF
56PF
R407
L420 R408 L421
15nH 15nH
1.8K,1%
C460
1.5PF
L424
C464
ACZ1005M-121-T
20PF
VTX_TANK
L425
18nH
C467
100PF
D
C469
20PF
2nd_Local_PCS : 527.2MHz
2nd_Local_CELLULAR : 457.2MHz
V_TX
U482
SBCK
TC7S32FU
5
SBST
1 B
PA_ON_CELL VCC
4
Y
PA_CP SBDT
2
GND
PA_ON_PCS A
3
E
1 2
3
L401
ACZ1005M-152-T
L402
BLM11A102SPT
L403
ACZ1005M-152-T
U502
C404
3.3NF C405 C406
C407 C408 10UF
L404
100NF 100PF
6.3V
100PF 100NF ACZ1005M-152-T
C413 C414
VTX_RF 100PF
10NF
F441
L406
855833
4.7nH
1
OUT1 7
IN1
3 IN2
5
OUT2
G1 G2 G3 G4
L409 2 4 6 8
12nH
VTX_RF
AB_SEL
L414
12nH
L415
4.7nH
SYNTH_LOCK
R404 VTX_RF
12K,1%
C441 L416
PA_ON_CELL
C443
470PF 10nH
100PF
C449 C448
100PF 10NF
R406
20K
TX_LO
51
R409 C457
100 6.8NF
C458
8PF
1
C461
GND1
100PF
R410
10K
C465
D404
47PF
1SV305
R412
150K
R415
51K
R417
2
1K
D405
3
1SV305
TX_AGC
4
1
5
U446
R419 C471
LMV821M7
10K 1NF
V_TX
C472
100NF
V_TX
R426
10K
TX_AGC
R423
150K
C473 C474
C475
100PF
100PF 100PF
3
SAMSUNG Proprietary-Contents may change without notice
4 5
V_TX U480
MIC5205-3.0BM5/TR
5 IN 1
OUT
GND 2
REF_BYP
4 3
EN
VTX_TANK
C409
C410 C411 C412
10UF 10NF 10NF 100PF
6.3V
V_TX
R402
U440
100K 7
SW-437
GND
C421 1 RF1 6 C422 3
V1 VREF
39PF 4PF
2
2 5
GND RFC RFIN
3 V2 4 1
RF2 VCC1
L408
C429
4.7nH
39PF
Q440
DTC144EE/TR
3
1
C430
2
1NF
C434
C435 C436
4.7NF
1NF 1UF
25V
V_REF
5 3
Q410
UMC5NTL
4
2 4
C444
C445
4.7NF
1UF
C446
25V
100PF
1
L418
BLM21P300SPT
C455
C456
U444 68PF 100NF
RM912
3 1 4
F444
C459
H836BF L422
1NF
3.9nH
OUT 3 2 RFIN RFOUT 5
IN
GND2
L423
7 C462 C463
2 4 6 8 9 10 1112
NC
NC 2PF
D440
1SS315(TPH3)
R414
2K,1%
H_DET
U445
R418
MAX4599EXT-T
3K
C470
D480
47NF
1SS315(TPH3)
TX_AGC_ADJ
FM_N
V_IF V_TX
V_TX
R427
6.8K
U481
LMV821M7
5 Q480
2SA1576FRT106
R420 1 R421
R422
47K
75K 100
2
4 1
3 3
2
R424
68K,1%
V_REF
R425
C476
100K,1%
100PF
Changed by Date Changed
EXCDMA
4 5
13-4
6 7
S3.6
U500
100NF
F440
QPMD-0422-TR1
4 5 6 7 8 910 1112 13141516 17
TX RX
1 2
ANT
IDLE_N
3
U430
CE0401G88DCB000
U441
CX77133
4
L407
VCC2
1.8NH
5
RFOUT
6 C423
GND
NC
C426 C427
NC 0.5PF
L410
BLM21P300SPT
L412
S3.6
1.8NH
C431
C433
2.2UF 4.7NF
C437
0.5PF
Q420 1 F442
DX21TFAP01
UMC5NTL
3 4
PS GND
5
2
PS
GND
6
1
PA_ON_PCS PS GND
2
C442
100PF
C447
3 5
NC
S3.6
L419
4.7nH C454
2PF
F445
CE053R836DCB-TA2
8
ANT 5
6 IN 1 11 RX
OUT TX
G1 G2 G3 G4 G5
2 3 4 5 7
13 12 10 9 7 6 4 3 2 1
F446
R411
EFSD836MC2S3
750
C466
10NF
R413
L426
750
47nH
V_TX
C468
R416
100PF
150,1%
Engineer
EXCDMA
Drawn by
R&D CHK
TITLE
DOC CTRL CHK
MFG CTRL CHK
Time QA CHK REV
02
2002.06.08
10:26:47 am
6 7
8
A
PCS_RX
GPS_RX
C419
L405
100PF
C420 -
NC
CN450
1 2 3
KMS-158
1 2 3
C424
100PF
G A C G G G
1 2 3 4 5 6
L411
2.2nH
B
C432 C478 L413
NC
3PF 4.7nH
U431
GN04022NOL
1
6 OUT1 C438
100PF
VCTL1 2
5
GND
IN
4 3
OUT2
VCTL2
C439
47PF
L417
NC
GPS
GPS_N
C452 C453
C
10NF 10NF
CELL_RX
D
SAMSUNG
Size
E
D
MF_Rev02
Drawing Number
Sheet4
8