Vhf Synthesizer Schematic Diagram - Motorola GP328 Plus Service Manual

5A-24
5V_1_FN
(SOURCE)
5V
VCTRL_1_FN
VCTRL
R5_1_FN R5_2_FN
4
R5
T5_1_FN
T5
VCO_MOD_1_FN
VCO_MOD
ZMY0130789-O
SH3701
SHIELD
1

VHF Synthesizer Schematic Diagram

5V_2_FN
C3701
.01uF
C3702
.01uF
C3703
.01uF
C3704
.01uF
C3705
C3706
C3714
0.1uF
4.7uF
4.7uF
R3721
470
C3722
R3722
0.1uF
Q3721 1K
UMC5
UMC5N
C3721
3 0.1uF
2
1
R3723
100
1
TP3701
C3724
1uF
SH3702
SHIELD
1
C3715
470pF
L3701
390nH
3
4
K3 A3
R3701
2
5
K2 A2
100
1 6
K1 A1
D3701
C3710
2.2uF
3 4
K3 A3
2 5
K2 A2
1 6
K1 A1
BIAS_ADJ_1_FN
R3702 R3705
D3702
33K
NU
C3708
R3726
C3725
0.1uF
NU
NU
C3707
C3709
22pF
0.1uF
R3703 R3704
150 150 C3746
220pF
LOCK_1_FN
LOCK
TRB_1_FN
TRB
R3741
16_8MHz_1_FN
100
16.8MHz
C3741
NU
C3761
39pF
C3762
330pF
R3762
NU
Circuit Board/Schematic Diagrams and Parts List
U3711
ADP3 mgc_comps
2
SWB_PLUS_1_FN
NR
4
5
OUT IN SWB+
6 3
ERR SD
C3711
C3712 C3713
10uF
0.1uF
2.2uF
1
TP3702
WARP
NC3
25 31
INDMULT
NC2
16 29
SFOUT
NC1
28 17
ADAPTSW C3726
R3727
46
8.2pF
LOCK CCOMP
100K
4 42
IADAPT REFSEL
45 18
IOUT PRESC_1_FN
43
PREIN C3755
32
2.2uF
TEST2 SFBASE
38 27 C3727
TEST1 SFCAP
100pF
37 26
AUX4 BIAS2
3 39
AUX3 BIAS1 R3752
2 40
330K
AUX2 R3751
1 mgc_comps
200K
AUX1 VBPASS
U3701
48 21
PVREF
35
VMULT4 DATA_1_FN
11
VMULT3 SFIN DATA
12 30
VMULT2 DATA MODIN_1_FN
14 7
VMULT1 MODIN MODIN
15 10
CSX_1_FN
MODOUT CEX CSX
41 9
FREFOUT CLK
19 8
XTAL2
CLK_1_FN
24
XTAL1
23 C3744 C3742 C3745
220pF 220pF 220pF
Y3761
75Z04
R3761
16.8MHz 47K
6 3
IN OUT
R3760 C3763
C3731
NU NU
.01uF
C3735
D3761
NU
Y3762
OSC_16.8MHZ
R3763
NU
2 4
GND VCC
C3751
NU
PRESC
VSF_1_FN
VSF
C3753
C3752 C3754
4.7uF 1000pF
0.1uF
CLK
C3743
220pF
L3731
Vdda_1_FN
2.2uH
Vdda
C3732 C3733 C3734
.01uF 2.2uF
.01uF
5V