Uhf Synthesizer Schematic Diagram - Motorola GP88s Service Manual

-30
9A
C256
100pF
C258
.01uF
C299
100pF
C259
.01uF
C230 C229
100pF 1000pF
CLK
CSX
C210
100pF

UHF Synthesizer Schematic Diagram

U211
U210
TC7ST04FU
TC7ST04FU
C265 C257
C296
0.1uF NU 100pF
1 4
1 4
NC NC
3 5 3 5
GND VCC GND VCC
2 2
CR201
3 4
K3 A3
2 5
K2 A2
1 6
K1 A1
C228
4.7uF
C292
0.1uF
C298
0.1uF
8
CLK
9
CEX
10
MODIN MODIN
7
DATA
DATA
30
SFIN
C212 C214 C211
100pF R201
100pF 100pF
35
82K PVREF
21
VBPASS
40
R202
BIAS1
100K
39
BIAS2
26
C264 SFCAP
L261
27
100pF
39nH SFBASE
32
PRESC PREIN
18
REFSEL
42
CCOMP
C263
C204
0.75pF
2.2uF 17
NC1
29
NC2
31
NC3
VSF
C201 C202 C203
100pF 1000pF 4.7uF
U247
ADP3300
1
ERR SD
6 3
5V
OUT IN
4 5
(SOURCE) NR
C291 2
10.0uF
L202
2.2uH
L203
2.2uH
C235
C219 C223
0.22uF 0.1uF 2.2uF
L201
2.2uH
C217 C218
C224
2.2uF 0.1uF
0.1uF
23
XTAL1
24
XTAL2
19
FREFOUT 16.8MHz
41
MODOUT
15
VMULT1
Q210
14
VMULT2
12
VMULT3
11
1
VMULT4
47K
47K
48
AUX1
1 2
10K
AUX2 C260
2
AUX3 100pF
U201 AUX3
3
AUX4
63A27 AUX4
3
37
TEST1
38
TEST2
5V
43
IOUT
45
IADAPT
4
LOCK
LOCK
46
ADAPTSW
28
SFOUT
16 C213
TP201
INDMULT
100pF
25
1
WARP
R204
47K
75Z04
FL201
6 3
IN OUT
C207 GND GND1
39pF CR203
1 4
C206
R281
NU 330pF
Circuit Board/Schematic Diagrams and Parts List
SWB+
C294
C293
100pF 0.47uF
U248
LP2980 3 1
C277
C278
100pF
2.2uF
2
GND
Vdda
4 5
C280
2.2uF
C220
C279
100pF 2.2uF
MODOUT
C233
R255
0.1uF
4.3K
R231
R256 C234 C232
30 120 .047uF
0.47uF
4.7K
R5
4
C231 R232
0.1uF 620
R233
560
L232
12uH
C238
470pF ZMY0130316-D
SH201 SH202
SHIELD SHIELD
C208
NU
1 1 if
if
SYNTHESIZER TOP SHIELD SYNTHESIZER BOTTOM SHIELD
4V_3.3V
1
TP202
VCTRL