Figure 9-160.Uhf (450-527 Mhz) Receiver Back End Schematic Diagram - Motorola HT Series Detailed Service Manual

UHF Section
SH321
SH323
SHIELD SHIELD
CRYSTAL FILTER SHIELD LVZIF TOP SHEILD
FL301
XTAL
TBD
C323
L311
150pF 750nH
6 3
OUT
IN
IF
C324
20pF
L331
R343
2.2uH
Vdd_FILTERED
C382
(SOURCE)
10uF
C344
0.1uF
C329
0.1uF
SH322
SHIELD
C342
1uF
C341
1uF
LVZIF BTM SHEILD C340
1uF
C339
1uF
C356
.022uF
Vdd_FILTERED
C337
L314
100pF
2.2uH
C336
0.1uF
R5
C355
R314
0.15uF
3K
C326 C328
R313
.01uF 0.1uF
330
C327
100pF
R311
30K C330
10pF
C325
R312
R351
Q302
.01uF
2.4K
0
R352
R315 L330
3.3K
12K 680nH
10
Vdda
C348
C347
C346
0.1uF
0.1uF
0.1uF
C343
0.22uF
R344
12K
C357
0.22uF
C358
1200pF
C4M
C359
37
C4P
0.1uF
38 24
C3P MLPD_CR
39 23 C334
C2P BRP_OFF
40 22 .022uF
BROWN_VCC
C1P
41 21
GREEN_VCC FREF
42 20
MIX_BYP GND
43 19
GREEN_VSS CEX LVZIF_SEL
U301
44 18
BLUE_VSS CLK
CLK
45 17
BLUE_VCC DATA
46 16
MIX_IN TESTA
47 15
PREAMP_OUT IOUT
48 14
GOLD_VSS
13
COL
C338
15pF
RSSI
C361
.01uF
C360
.022uF
DEMOD
R350
C345
100K
0.1uF
C390
100pF
R355
0
C383
3
100pF
Vdd C352
12pF
FILTERED
2
C349
.022uF C351
20pF
16.8MHz
C350 R324
330pF
2K
DATA
C362 R321
0.1uF 1K
C363
1uF
Figure 9-160. UHF (450-527 MHz) Receiver Back End Schematic Diagram
9-275
C384
R345
Q320
56pF
10K
1
C353
R346
43pF
56K
C385
L332
C354 100nH
56pF
47pF
L325
2.2uH
R320
CR310
3.9K
C364
R322
8200pF
200K
FL0830743O