Figure 11-20. Uhf (438-470 Mhz) Pcb 8486348Z13-C Synthesizer Schematic Diagram - Motorola EP450 Service Manual

11-26
SH200 SH201
SHIELD SHIELD
1
1
FN_PRESC C241
PRESC
100pF
C240
1.3pF
FN_DATA
SPI_DATA_OUT
FN_MOD
MOD_IN
FN_SYNTH_CS
SYNTH_CS
FN_CLK
SPI_CL K
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 11-20. UHF (438-470 MHz) PCB 8486348Z13-C Synthesizer Schematic Diagram

November 24, 2003
UHF R2 Synthesizer
R230 R247
22K 20K
31 WARP 25
NC NC3
29 INDMULT 16
NC NC2
17 SFOUT 28
NC NC1
ADAPTSW 46
42
NC CCOMP LOCK
18 IADAPT 45
NC REFSEL
32
PREIN
27 TEST2 38
NC
SFBASE
26 TEST1 37
SFCAP
39
BIAS2
C230
40
BIAS1
2.2uF U201
21
NC VBPASS
63A 27
35
NC PVREF
VMULT4 11
30 VMULT3 12
SFIN
7 VMULT2 14
DATA
10 VMULT1 15
MODIN
9 MODOUT 41
CEX
8 FREFOUT 19
CLK
XTAL2 24
XTAL1 23
C207
C208 C209 C210
470pF 470pF 470pF 470pF
FN_3V
L211
3V
390nH
C212 C213 C214
.01uF
2.2uF 1000pF
5V
FN_5V
R212
5V
0
C215 C216
2.2uF 1000pF
0.1uF
C232 C233
C231
1000pF 0.1uF
4.7uF
NC
NC
4
IOUT 43
TP200
R246
NC
1
NC
100K
AUX4 3
NC FN_TRB
AUX3 2
TR B
AUX2 1 R202
NC
AUX1 48 TX: 3V
150K
NC
RX: 0V
NC
NC
5V
C202 C201
Y202
C211
45J68
62pF 220pF
NU
1%
0.1uF 4
VCC
C206
R206
3 OU T 1
VCON
16.8MHz
NU
NU
GND
Y201
2
14R06
16.8MHz
3 1
OUT
IN
D201
C203
GND1 GND
4
2
2.7pF
3.7%
R223
100
C217 C219
C218
2.2uF 0.1uF
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
FN_V_SF
4.5V
V_SF
FN_LOCK
LOCK
LOCK: 3V
C204
UNLOCK: 0V
470pF
R245
1.5K
C243
R243
820
0.1uF
PT08MTPB49
R244
51
1
TP240
C245
VCO_MOD
FN_VCO_MOD
1uF
R205
R220
R221
100 91
91
C220
FN_16_8
16_8_MHZ
22pF
C205
C221
NU
.01uF
C222
3V
.01uF
0V
C223
3V
.01uF
0V
C224
.01uF
C228 C227 C226 C225
R227
NU
0.1uF 1000pF
10uF 10uF
FN_V_STEER
3.2V to 4.5V
V_STEER
C244
.01uF
A3 4
3
K3
5
2 K2
A2
1 6
K1 A1
D220
NC NC
3 4
K3 A3
2 A2 5
K2
1 6
K1 A1
D221
HKLN4216A