Figure 7-30. Vhf (146-174 Mhz) Synthesizer Schematic Diagram (8486342Z09-A) - Motorola CP150 Service Manual

7-24
PRESC
R248
51
SPI_DATA_OUT
MOD_IN
SYNTH_CS
SPI_CLK
3V

Figure 7-30. VHF (146-174 MHz) Synthesizer Schematic Diagram (8486342Z09-A)

June, 2005
R230 R247
200K
270K
31 25
NC NC3 WARP
29 16
NC NC2 INDMULT NC
17 28
NC1 SFOUT
NC
46
ADAPTSW NC
42 4
NC CCOMP LOCK
18 45
C241
NC REFSEL IADAPT
1200pF 43
IOUT
32
PREIN
27 38
NC SFBASE TEST2 NC
26 37
SFCAP TEST1 NC
39 3
BIAS2 AUX4
NC
40 2
BIAS1 AUX3
1
U201 AUX2 NC
C230
21 48
NC VBPASS AUX1 NC
2.2uF
35
PVREF
NC 63A27
11
VMULT4 NC
30 12
SFIN VMULT3 NC
7 14
DATA VMULT2
10 15
MODIN VMULT1
9 41
CEX MODOUT
8 19
CLK FREFOUT
44 mV (RF)
24
XTAL2
23
XTAL1
C202
62pF
1%
205 mV (RF)
C207 C208 C209 C210
470pF 470pF 470pF 470pF
C206
NU
L211
560nH
C212 C213 C214
16.8MHz
2.2uF
.01uF 1000pF
3
OUT
4
5V
5V
R212
0
C216
C215 C217
2.2uF
0.1uF 1000pF
SH200 SH201
SHIELD SHIELD
1 1
4.5V
V_SF
C231 C232 C233
1000pF 0.1uF 4.7uF
LOCK: 3V
UNLOCK: 0V
LOCK
C204
470pF
TX: 3V
RX: 0V
TRB
VCO_MOD
R205
TP200
100
C201
1
107 mV (RF)
220pF
R246
16_8_MHZ
100K
5V
R202
150K
C205
NU
C211
0.1uF
4
3 1
OUT VCON
16.8MHz
R206
NU
Y202 2
45J68
NU
2.4 V (TYP)
1
IN
2 Y201
C203
D201
14R06
2.7pF
3.7%
R227 C228
150K 0.1uF
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)
3.0V to 9.0V
R245
1.5K
C243 R243 C244
0.1uF 2K
1200pF
R244
51
TP240
1
C245
1uF
R220 R221
150
150
C220 C221
22pF .01uF
3V
3
4
0V
C222 K3 A3
2
.01uF 5
K2 A2
3V 1 6
K1 A1
R223
0V
D220
100
C223
.01uF
C224
.01uF
3 4
NC K3 A3 NC
2 5
K2 A2
1 6
K1 A1
D221
C227 C226 C225
1000pF 10uF 10uF
V_STEER
C218 C219
2.2uF 0.1uF
6880309N62-C