Motorola EP450

11-26 UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
November 24, 2003 HKLN4216A
TCXO
NU
NU
220pF
Crystal
R206
Y202
UNLOCK: 0V
0.01uF
3V
0V
TX: 3V
C202
1SV232
Y201
2.7pF
45J68
LOCK: 3V
4.5V
NU
NU
47k
RX: 0V
3.2V to 4.5V
C201
Reference Oscillator
NU
62pF
NU
NU
NU
14R06
150k
3V
0V
D201
C203
100
R202
C206
4
VCC
1
VCON
UHF R2 Synthesizer
NU
Y202
45J68
16.8MHz
2
GND
3
OU T
C226
10uF
D201
22pF
C220
2.2uF
C212
NC
5V
5V
NC
10uF
C225
C206
FN_TRB
1
NU
K3
SHIELD
SH200
1
SHIELD
SH201
D220
A1
6
A2
5
A3
4
1
K1
2
K2
3
R227
NU
FN_DATA
C241
R243
100pF
R230
820
R247
22K
C210
20K
0.1uF
470pF
C219
FN_3V
NC
NC
100
NC
NC
R223
R202
150K
NC
NC
470pF
C209
2.7pF
3.7%
C203
1000pF
C214
FN_LOCK
NC
FN_5V
NC
FN_V_STEER
100
NC
R205
C222
.01uF
.01uF
C224
FN_CLK
PT08MTPB4
9
C243
0.1uF
C233
4.7uF
NC
C245
1uF
NC
NC
2
GN
D
4
GND1
3
OUT
1
IN
NU
C205
NC
Y201
14R06
16.8MHz
XTAL1
23
XTAL2
24
C202
1%
62pF
VBPASS
21
VCP
47
VMULT1
15
VMULT2
14
VMULT3
12
VMULT4
11
13
VRO
WARP
25
PVREF
35
REFSEL
18
SFBASE
27
SFCAP
26
SFIN
30
SFOUT
28
TEST1
37
TEST2
38
NC1
17
NC2
29
NC3
31
PD_GND
44
5
PD_VDD
PREIN
32
PRE_GND
33
PRE_VDD
34
DVDD
36
FREFOUT
19
IADAPT
45
INDMULT
16
IOUT
43
4
LOCK
MODIN
10
MODOUT
41
AVDD
20
BIAS1
40
BIAS2
39
CCOMP
42
CEX
9
CLK
8
DATA
7
DGND
6
U201
63A
27
ADAPTSW
46
AGND
22
AUX1
48
AUX2
1
AUX3
2
AUX4
3
TP200
1
FN_MOD
C223
.01uF
1
.01uF
C213
TP240
R206
390nH
L211
NU
3
0
R212
D221
A1
6
A2
5
A3
4
K1
1
K2
2
K3
C221
.01uF
2.2uF
C215
2.2uF
C218
FN_V_SF
NC
2.2uF
C230
C240
1.3pF
C211
FN_VCO_MOD
C231
1000pF
0.1uF
0.1uF
NC
NC
C216
91
FN_PRESC
R246
R220
1000pF
100K
1.5K
R245
C227
51
R244
470pF
NC
R221
C208
C204
91
C201
470pF
470pF
220pF
C207
C232
0.1uF
FN_16_8
C244
1000pF
C217
.01uF
FN_SYNTH_CS
V_SF
V_STEER
5V
C228
0.1uF
LOCK
PRESC
16_8_MHZ
3V
SPI_DATA_OUT
MOD_IN
SYNTH_CS
SPI_CL K
VCO_MOD
TR B
Figure 11-20. UHF (438-470 MHz) PCB 8486348Z13-C Synthesizer Schematic Diagram