Figure 11-6. Uhf (403-440 Mhz) Pcb 8486635Z03-O Synthesizer Schematic Diagram - Motorola EP450 Service Manual

11-8
C241
FN_PRESC
PRESC
100pF
C240
1.3pF
FN_DATA
SPI_DATA_OUT
FN_MOD
MOD_IN
FN_SYNTH_CS
SYNTH_CS
FN_CLK
SPI_CLK
C208
C207
470pF 470pF
FN_3V
3V
Reference Oscillator
Crystal TCXO
C201 220pF NU
C202 62pF NU
C203 2.7pF NU
C206 NU 0.01uF
R202 150k 47k
R206 NU 100
D201 1SV232 NU
Y201 14R06 NU
Y202 NU 45J68

Figure 11-6. UHF (403-440 MHz) PCB 8486635Z03-O Synthesizer Schematic Diagram

November 24, 2003
UHF R1 Synthesizer
R230 R247
22K
24K
31 NC3
25
WARP
NC
29 NC2 16
NC INDMULT NC
17 NC1 28
SFOUT
NC
46
ADAPTSW
NC
42 CCOMP 4
NC LOCK
18 REFSEL 45
NC IADAPT
43
IOUT
32
PREI N
27 SFBASE 38
NC TEST2 NC
26 SFCAP 37
NC
TEST1
U201
3
39 BIAS2 RX: 0V
AUX4 NC
C230
63A27
40 BIAS1 2
AUX3
1
AUX2 NC
2.2uF
21 VBPASS 48
NC AUX1
NC
35 PVREF
NC
11
VMULT4
NC
30 SFI N 12
VMULT3
NC
7 DATA 14
VMULT2
10 MODIN 15
VMULT1
9 CEX
41
MODOUT
8 19
CLK FREFOUT
24
XTAL2
23
XTAL1
C202
62pF
1%
C209 C210
470pF 470pF
C206
L211
NU
390nH
Y201
C212 C213 C214
14R06
2.2uF .01uF 1000pF
16.8MHz
3
OUT
4
5V
FN_5V
R212
5V
0
C217
C216
C215
2.2uF 0.1uF
1000pF
FN_V_SF
4.5V
V_SF
C231 C232 C233
LOCK: 3V
1000pF 0.1uF
4.7uF
UNLOCK: 0V
FN_LOCK
LOCK
C204
470pF
TX: 3V
FN_TRB
TRB
FN_VCO_MOD
TP200 R205
R246
1 100
C201
FN_16_8
100K
16_8_MHZ
220pF
5V
R202
C205
150K
NU
C211
Y202
0.1uF 45J68
NU
4
VCC
R206
3 1
OUT
VCON
NU 16.8MHz
GND
2
1
IN
C203
D201
2.7pF
2
3.7%
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
SH200
SH201
SHIELD SHIELD
1
1
R245
3.2V to 4.5V
1.5K
C244
C243
R243
820
0.1uF .01uF
R244
51
1
TP240
C245
VCO_MOD
1uF
R220 R221
22 22
C220
22pF
C221
.01uF
3V
3 4
0V K3
A3
C222 2 5
K2
A2
3V 1 6
K1
A1
0V .01uF
D220
C223
.01uF
C224
NC NC
.01uF 3 K3 4
A3
2 K2
5
A2
1 K1 6
A1
D221
C228 C227
C226 C225
R227
39K
0.1uF
1000pF
10uF 10uF
FN_V_STEER
V_STEER
0888600M25
R223
100
C219
C218
2.2uF 0.1uF
HKLN4216A