Figure 12-18. Uhf (438-470 Mhz) Synthesizer Schematic Diagram (8486348Z09-A) - Motorola CP150 Service Manual

12-24
PRESC
C240
1.3pF
SPI_DATA_OUT
MOD_IN
SYNTH_CS
SPI_CLK
3V

Figure 12-18. UHF (438-470 MHz) Synthesizer Schematic Diagram (8486348Z09-A)

June, 2005
R230 R247
100K 91K
31 25
NC NC3 WARP
29 16
NC NC2 INDMULT NC
17 28
NC NC1 SFOUT
46
ADAPTSW NC
42 4
NC CCOMP LOCK
18 45
C241
NC REFSEL IADAPT
100pF
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
AUX2 NC
C230
21 48
NC VBPASS AUX1 NC
2.2uF
35
NC PVREF
63A27
11
U201
VMULT4 NC
30 12
SFIN VMULT3 NC
7 14
DATA VMULT2
10 15
MODIN VMULT1
9 41
CEX MODOUT
8 19
CLK FREFOUT
24
XTAL2
23
XTAL1
C202
62pF
1%
327 mV (RF)
C207 C208 C209 C210
470pF 470pF 470pF 470pF
C206
NU
L211
390nH
C212 C213 C214
2.2uF 16.8MHz
.01uF 1000pF
3
OUT
5V
5V
R212
0
C215 C216 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
67.3 mV (RF)
R205
TP200
100
C201
1
220pF 112.6 mV (RF)
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
2.8 V (TYP)
1
IN
4 2 Y201
C203
14R06 D201
2.7pF
3.7%
R227
150K
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)
R245
3.5V to 10V
1.5K
C244
R243
.01uF
2K
C243
0.1uF
R244
51
TP240
1
C245
1uF
R220 R221
150 150
C220 C221
.01uF
22pF
3V
3
4
0V C222
K3 A3
2 5
.01uF
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
C228 C227 C226 C225
0.1uF 1000pF 10uF 10uF
V_STEER
C218 C219
2.2uF 0.1uF
6880309N62-C