Figure 11-33. Uhf (465-495 Mhz) Pcb8486634Z02-O Synthesizer Schematic Diagram - Motorola EP450 Service Manual

11-44
SH201
SH200
SHIELD SHIELD
1
1
FN_PRESC C241
PRESC
100pF
C240
1.3pF
C230
7.7%
2.2uF
FN_DATA
SPI_DATA_OUT
FN_MOD
MOD_IN
FN_SYNTH_CS
SYNTH_CS
FN_CLK
SPI_CL K
C207
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 11-33. UHF (465-495 MHz) PCB8486634Z02-O Synthesizer Schematic Diagram

November 24, 2003
R230 R247
20K 18K
31 NC3 25
NC WARP
29 NC2 16
INDMULT NC
NC
17 NC1 28
SFOUT
NC
46
NC
ADAPTSW
42 CCOMP 4
NC LOCK
18 REFSEL 45
IADAPT
NC
43
IOUT
32
PREIN
27 SFBASE 38
NC
NC TEST2
26 SFCAP 37
TEST1 NC
U201
39 BIAS2 3
NC
AUX4
63A 27
40 BIAS1 2
AUX3
1
AUX2 NC
21 VBPASS 48
AUX1 NC
NC
35 PVREF
NC
11
NC
VMULT4
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%
C206
C208 C209 C210
470pF 470pF 470pF
NU
L211
390nH
C212 C213
C214 3
OU T
2.2uF .01uF 1000pF
GND1
5V
FN_5V
R212
5V
0
C215 C216 C217
2.2uF 0.1uF
1000pF
UHF R3 Synthesizer
FN_V_SF
4.5V
V_SF
C231 C232 C233
0.1uF
1000pF
4.7uF
FN_LOCK
LOCK
LOCK: 3V
C204
UNLOCK: 0V
470pF
TX: 3V
RX: 0V
R246
1
TR B
TP200
100K
FN_TRB
FN_VCO_MOD
5V
R205
100
C201
C211
R202
220pF
150K
0.1uF
4
C205
VCC
R206 NU
3 1
OU T VCON
16.8MHz
NU
GND
Y201
2
Y202
14R06
45J68
NU
16.8MHz
1
IN
D201
C203
GND
4 2
2.7pF
3.7%
R223
100
C219 C218
0.1uF 2.2uF
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
R245
3.2V to 4.5V
1.5K
C243
R243
0.1uF 820
R244
51
1
TP240
C245
VCO_MOD
1uF
R220 R221
22
22
C220
FN_16_8
16_8_MHZ
22pF
C221
.01uF
3V
3
0V
2
C222
3V
1
.01uF
0V
C223
.01uF
C224
.01uF
NC
3 K3
2 K2
1 K1
C228 C227 C226 C225
R227
39K 0.1uF
1000pF
10uF 10uF
FN_V_STEER
V_STEER
C244
.01uF
0888600M25
4
K3 A3
5
K2 A2
6
K1 A1
D220
4
A3 NC
5
A2
6
A1
D221
HKLN4216A