Figure 9-65. Uhf (403-470 Mhz) Synthesizer Schematic Diagram - Motorola HT Series Detailed Service Manual

9-86
C230 C229
100pF 1000pF
CLK
CSX
C210
100pF

Figure 9-65. UHF (403-470 MHz) Synthesizer Schematic Diagram

U210
U211
TC7ST04FU C296
C257
TC7ST04FU C265
0.1uF
1 4 100pF
1 4 NU
NC NC
5
3 3 GND 5
VCC VCC
GND
2 2
C258
.01uF
C259
.01uF
CR201
3 K3 4
A3
2 K2 A2 5
A1 6
1
K1
C228
4.7uF
C292
0.1uF
C298
0.1uF
8
9 CLK
CEX
10
MODIN
MODIN
7
DATA
DATA
30
SFIN
C212 C214
C211
R201
100pF 35
100pF
100pF
PVREF
82K
21
VBPASS
R202 40
BIAS1
100K
39
BIAS2
26
C264 27 SFCAP
L261
100pF SFBASE
39nH
32
PREIN
PRESC
18
REFSEL
42
CCOMP
C204
C263
0.75pF 2.2uF 17
NC1
29
NC2
31
NC3
VSF
C201
C202 C203
100pF 1000pF 4.7uF
U247
ADP3300
ERR SD
6 3
5V OUT IN
4 5
NR
(SOURCE)
C291
2
10uF
L202
2.2uH
L203
2.2uH
C223 C235
C219
0.1uF 2.2uF
0.22uF
L201
2.2uH
C224 C217 C218
0.1uF 2.2uF 0.1uF
23
XTAL1
24
XTAL2
FREFOUT 19
16.8MHz
MODOUT 41
VMULT1 15
Q210
VMULT2 14
12
VMULT3
VMULT4 11
1
AUX1 48
AUX2 1
2
C260
AUX3 2
AUX3 100pF
U201 AUX4 3
AUX4
3
LVFractN IC
TEST1 37
TEST2 38
5V
IOUT 43
IADAPT 45
LOCK 4
LOCK
46
ADAPTSW
SFOUT 28
16 C213
TP201
INDMULT
25 1 100pF
WARP
R204
47K
FL201
16.8MHz
75Z04
6 OUT 3
IN
C207
47pF CR203
R281 C206
NU
330pF
UHF Band 1 Circuit Board/Schematic Diagrams and Parts List (PCB 8486458Z03)
SWB+
C294 C293
U248
100pF 0.47uF
LP2980
3 1 C277
C278
100pF
10uF
2
GND
Vdda
C220 C279
100pF 2.2uF
MODOUT
C233
R255
0.1uF
4.3K
R256 R231 C234
C232
30 120 0.47uF
.047uF
R5
4
R232
C231
620
0.1uF
R233
560
L232
12uH
C238
470pF
SH201
SH202
SHIELD SHIELD
C208
NU
1
1
if
SYNTHESIZER BOTTOM SHIELD
SYNTHESIZER TOP SHIELD
4V_3.3V
1
TP202
VCTRL