Figure 6-6. Vhf (146-174 Mhz) Pcb 8486342Z13-C Synthesizer Schematic Diagram - Motorola EP450 Service Manual

6-8
SH200
SH201
SHIELD SHIELD
1
1
C241
FN_PRESC 1200pF
PRESC
R248
51
C230
2.2uF
FN_DAT A
SPI_DATA_OUT
FN_MOD
MOD_IN
FN_SYNTH_CS
SYNTH_CS
FN_CLK
SPI_CLK
C207 C208
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
FN_5V
5V

Figure 6-6. VHF (146-174 MHz) PCB 8486342Z13-C Synthesizer Schematic Diagram

November 24, 2003
C231
R247
R230
1000pF
270K
200K
31 WARP 25
NC3
NC
INDMULT 16
29
NC2 NC
NC
17 SFOUT 28
NC1
NC
ADAPTSW 46
NC
42 4
CCOMP LOCK
NC
18
43
REFSEL
NC
IOUT
IADAPT 45
32
PREI N
27 TEST2 38
NC
SFBASE
NC
26 TEST1 37
SFCAP NC
U201
39 AUX4 3 FN_TRB
BIAS2 NC
63A 27
AUX3 2
40
BIAS1
AUX2 1
NC
21 AUX1 48
VBPASS NC
NC
35
VMULT4 11
PVREF
NC NC
VMULT3 12
NC
30
SFIN 14
VMULT1
7
15
DATA
VMULT2
10
MODIN
9 MODOUT 41
CEX
FREFOUT 19
8
CLK
XTAL2 24
XTAL1 23
C202 C201
62pF 220pF
1%
C211
C209 C210
0.1uF
470pF 470pF
C206
R206
L211
NU
NU
560nH
Y201
C212 C214
C213
14R06
2.2uF .01uF 1000pF
16.8MHz
3
OU T IN
GND1 GND
4 2
5V
R212
0
C215 C216 C217
2.2uF 0.1uF 1000pF
VHF R2 Synthesizer
FN_V_SF
4.5V
V_SF
C232 C233
0.1uF
4.7uF
FN_LOCK
LOCK
C204 LOCK: 3V
UNLOCK: 0V
470pF
R246
1
TP200
TRB
100K
TX: 3V
RX: 0V
FN_VCO_MOD
VCO_MOD
R205
100
FN_16_8
16_8_MHZ
5V
R202
C205
150K
NU
Y202
45J68
NU
4
VCC
3 1
OUT VCON
16.8MHz
GND
2
1
D201
C203
2.7pF
1SV232
3.7%
R227
150K
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
FN_V_STEER
R245
1.5K
C243 C244
R243
2K
0.1uF 1200pF
R244
51
1
TP240
C245
1uF
R220 R221
150 150
C220
22pF
C221
.01uF
3 K3 A3 4
2 K2 5
C222
A2
3V 1 K1 A1 6
0V
.01uF
D220
3V
C223
0V
.01uF
C224
NC
.01uF 3 A3 4
K3 NC
2 A2 5
K2
1 A1 6
K1
D221
C228 C227 C226 C225
0.1uF 1000pF
10uF 10uF
V_STEER
3.0V to 8.0V
R223
100
C218 C219
2.2uF 0.1uF
HKLN4216A