Samsung SCH-A205 Service Manual page 44

9-3 Receiver Circuit Diagram
Q301
2SC4081BRT106
3
1
LNA_GAIN
2
R301
C301
C302 510
470PF
1NF
C303
12PF
RF_DUP
F301
C304
EFSD836MB1Z1
8
1NF
ANT
3 13
TX_OUT TX RX
20 19 18 17 16 15 14 12 11 10 9 7 6 5 4 2 1
+3.0IF
R391
4.7K
MODE_SEL
3 5 Q390
UMC5NTL
4
+3.0VCO
2
_RX_ON
1
+3.0VR
U390
C352
MIC5205-3.0BM5/TR
10NF
1 IN 5
OUT
V_DC
C506 2 GND
REF_BYP
10UF
3 4
EN
6.3V
C349
C350
10NF
470PF
_RX_ON
C351
220PF
CONFIDENTIAL
SAMSUNG Proprietary - Contents may change without notice
C313
R310 C312
C311 150PF
0 10UF
100NF
6.3V
R311
430
C307
C308
10NF
47NF
C316 C317
100NF 100PF
R312
1K L310
U310
L301 12nH
RF2361TR13
150nH
1 RFIN 5
GND2 C318
FAR-F5CE-881M50-D233-W
2
GND1 5PF
3 RFOUT 4
VPD
L311
NC
C306
22NF
D301
RN731V
L302
5.6nH
D302
BAR63-02W-E6327
L303
100nH
C305
12PF
C361 C362
100NF 10NF
C360
10UF
6.3V
C363
68NF
+3.0IF
U391
TPS76930DBVR
1 IN 5
V_DC OUT
2 GND
C394
C395
C501
10UF
3 NC/FB 4
10UF 10NF _EN
6.3V
C398
6.3V
C397
10NF
NC
+3.0VR
L325
BLM11A102SPT
C314 C315
33NF 100NF
L323 L324
R324
2.7uH 2.7uH
1K
L322
2.7uH
L321
220nH
C323
6PF
U330
RF2466TR13
R330
C325
FM+ 1K
8PF
GND3
GND5
BYP
CDMA+
MIXER_IN
CDMA-
C320
GND2
F320 22NF
L312 GND6
LO- L330
C326
15nH GND1
NC
8PF
IN OUT
2 5
C319 C327
L336
G G G G
1NF
33NF 470nH
L320
1 3 4 6 L313
8.2nH
27NH
C324 C348
C321
6PF 5PF
3PF
C322
5PF
MODE_SEL
R360
18
R361
100
TX_1ST_LO
+3.0VCO
R362
18
R350
22
U350
UCVW4X103A
7
VCC
5 VT 1
OUT
R371
8 6 4 3 2
100
C369 L371
R378
C366 100nH
430 C365 100PF
R377
RXVCO_OUT
1K 47NF 33NF
C364
470NF
20V
R374 C371 R372
R373
C373 0 0
910 33NF
4.7NF
C372
4.7UF
6.3V
C399
10UF
6.3V C374
R375
120PF
10K
RX_VCO1
D380
1SV279-TPH3
C375
L372
9PF
0603CS-56NXJBC
D381
C376
R376
1SV279-TPH3
120PF
10K
RX_VCO2
L334 L335
BLM11A102SPT BLM11A102SPT
C336 C337 C339 C340 C341
C338
10NF 100NF 1NF 10NF
10NF
1NF
U340
IFR3000-48BCCF-TR
37 27
F330
855845 4
VDD1
6
C328
SAWTEK VDD2
14
12PF VDD3
15
VDD4
10 OUT 5 17
IN
VDD5
20
VDD6
9 OUT 4 24
IN R331
VDD7
35
G GG G GG
NC VDD8
44
VDDM
1 2 3 6 7 8
36
TCXO
L331 L332
11
C329
CDMA_IF FM_RX_QDATA_RXID0
220nH 12
220nH CDMA_IF/
12PF
7
VCONTROL
FM_RX_IDATA_RXID1
10 5
IN 10
OUT FM_IF
9
C331 FM_IF/
C330
G8 G7 G6 G5 G4 G3 G2 G1 C332 R342
1NF
1NF
9 8 7 6 4 3 2 1 10NF 33K
32
SBCK_SLEEP/
L333 30
SBST_IDLE/
NC 31
SBDT_FM/
26 SBI_EN
C333 29
FM_SLOT
F340
MSFB27-85-030K0 22NF 33
DNC
KSS
C334
100PF
21 22
TCXO
RX_AGC_ADJ
R343
0
R344 C335
100PF
1M
+3.0IF
C355
L370
C356
10UF
BLM11A102SPT
10NF
6.3V
R370
C357
22
10NF
C381 V_TCXO
10NF
23 24 2 2 2
C359
8
5 TCXO_IN
R381
C383
RX_IN 4
3
100PF 6 10
_RX_IN 100PF
OUT VCC
3 DO_RF GND1 1
C384
GND2 4 GND vc
17
GND3 7 100PF
_IF_IN
9 U380 2 1
GND4
18
10
IF_IN GND5 TCO-5812U1(19.68MHZ)
GND6 13
20
GND7 16
DOIF
C382
GND8 19
GND9 21 220PF
U370
14 15 12 11
S1M8821X02-G0T0
C370
10NF
C377 C378
C379
100PF 100PF
100PF
+3.0IF
C344
C342 C343
10UF
1NF 10NF
6.3V
Q_OFFSET
I_OFFSET
C345
100PF
C346
100PF
C347
NC
R341
1K
CHIPX8
28
38
CHIPX8
C_RX_QDATA(3)
39
RXQD3 C_RX_QDATA(2)
C_RX_QDATA(0:3)
40
RXQD2 C_RX_QDATA(1)
RXQD1 41
C_RX_QDATA(0)
42
RXQD0
C_RX_IDATA(3)
45
RXID3 C_RX_IDATA(2) C_RX_IDATA(0:3)
46
RXID2
C_RX_IDATA(0)
48
1
RM_RX_CLK FM_RX_CLK
2
FM_RX_STB
C_RX_IDATA(1)
47
FM_RX_STB
3
GND1
5
GND2
8
GND3
13
GND4
16
GND5
GND6 18
19
GND7
23
GND8
34
GND9
GND10 43
25
RXVCO_OUT
RX_VCO2
RX_VCO1
_SLEEP
ADC_DATA_SBDT
ADC_ENA_SBST
ADC_CLK_SBCK
SBI_EN
R380
10
TCXO
+3.0IF
3 5
Q380
UMC5NTL
4
2
TCXO_CON
C380
1
100NF
TRK_LO_ADJ
PLL_CLOCK
RX_EN
PLL_DATA
9-3