Motorola EP450

6-8 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
November 24, 2003 HKLN4216A
3V
3V
2.7pF
NU
R202
NU
Y202
150k
45J68
220pF
RX: 0V
3.0V to 8.0V
4.5V
UNLOCK: 0V
14R06 NU
Reference Oscillator
NU
NU
TCXO
NU
62pF
0V
0V
Y201
NU
TX: 3V
LOCK: 3V
C202
0.01uF
R206
Crystal
C206
C201
1SV232
47k
NU
D201
1
IN
VHF R2 Synthesizer
C203
100
Y201
14R06
16.8MHz
2
GND
4
GND1
3
OU T
C202
1%
62pF
NC
VMULT2
14
VMULT3
12
VMULT4
11
13
VRO
WARP
25
XTAL1
23
XTAL2
24
SFCAP
26
SFIN
30
SFOUT
28
TEST1
37
TEST2
38
VBPASS
21
VCP
47
VMULT1
15
PD_GND
44
5
PD_VDD
PREIN
32
PRE_GND
33
PRE_VDD
34
PVREF
35
REFSEL
18
SFBASE
27
INDMULT
16
IOUT
43
4
LOCK
MODIN
10
MODOUT
41
NC1
17
NC2
29
NC3
31
CCOMP
42
CEX
9
CLK
8
DATA
7
DGND
6
DVDD
36
FREFOUT
19
IADAPT
45
AGND
22
AUX1
48
AUX2
1
AUX3
2
AUX4
3
AVDD
20
BIAS1
40
BIAS2
39
U201
63A27
ADAPTSW
46
L211
560nH
150
R221
C219
0.1uF
C207
470pF
C232
0.1uF
150K
NC
C209
R202
C245
470pF
C225
1uF
C224
NC
10uF
.01uF
C213
C223
.01uF
1
.01uF
470pF
TP240
C208
R205
100
470pF
C204
220pF
C201
22pF
C220
NC
NC
R245
C222
.01uF
FN_16_8
1.5K
1000pF
C217
150K
R227
2.7pF
3.7%
C203
1000pF
C214
R244
51
FN_SYNTH_CS
C228
0.1uF
C205
R212
0
NU
FN_3V
NC
NC
NC
R223
100
FN_CLK
A2
5
A3
4
K1
1
K2
2
K3
3
D221
A1
6
.01uF
NC
FN_VCO_MOD
C221
2K
R243
2.2uF
C215
2.2uF
C218
D201
A1
6
A2
5
A3
4
1
K1
2
K2
3
K3
1SV232
D220
R230
200K
FN_DAT A
C231
1000pF
C244
1200pF
NC
C216
0.1uF
C241
1200pF
FN_TRB
FN_PRESC
NU
C206
0.1uF
C211
NC
470pF
C210
C243
0.1uF
NC
4.7uF
C230
C233
C212
NC
2.2uF
5V
5V
2.2uF
FN_5V
NC
NC
FN_V_STEER
R248
51
FN_MOD
R206
FN_V_SF
Y202
45J68
16.8MHz
2
GN
D
3
OUT
4
VCC
1
VCON
NU
10uF
NU
270K
C226
SH201
SHIELD
1
R247
NC
SH200
SHIELD
1
FN_LOCK
NC
C227
1000pF
NC
NC
R246
R220
150
TP200
1
100K
5V
3V
PRESC
LOCK
V_SF
V_STEER
16_8_MHZ
SPI_DATA_OUT
MOD_IN
SYNTH_CS
SPI_CLK
VCO_MOD
TRB
Figure 6-6. VHF (146-174 MHz) PCB 8486342Z13-C Synthesizer Schematic Diagram