Vhf Synthesizer Schematic Diagram - Motorola GP88s Service Manual

Circuit Board/Schematic Diagrams and Parts List
5V_1_FN
5V (SOURCE)
VCTRL_1_FN
VCTRL
Q3721
R: 5V
UMC5N
R5_1_FN
R5_2_FN
T: 0V
4
R5
4.7K
R: 0V
T5_1_FN
T: 5V
T5
VCO_MOD_1_FN
VCO_MOD
SH3701
SHIELD
1
C3701
.01uF
3
K3
2
K2
C3702
1
K1
.01uF
D3701
C3703
.01uF
C3704
.01uF
3
K3
2
K2
1
13.2V K1
D3702
C3705
0.1uF C3714
4.7uF
C3706
4.7uF
C3716
100pF
C3715
100pF
R3721
470
5V R3722 C3722
0.1uF
1K
C3721
3
0.1uF
10K
47K
2
47K
R3723
1
100
TP3701
1
C3724
1uF
3.5 - 9.5V
@135-174MHz
RF mV RMS measured with high impedance probe.
SH3702
SHIELD
1
5V
C3711
10uF
L3701
390nH
4
A3
R3701
5
A2
100
6
A1
C3710
2.2uF
4
BIAS_ADJ
A3
5
A2
6
A1
BIAS_ADJ_1_FN
R3702 R3705
NU 33K
C3725
C3708
R3726
NU
0.1uF
NU
C3707
22pF
R3703 R3704
C3709
150 150
0.1uF
C3746
3Vpp 220pF
WARP
@1.05MHz
25
INDMULT
16
SFOUT
28
LOCK_1_FN ADAPTSW
46
LOCK LOCK
4
IADAPT
45
IOUT
43
TEST2
38
TEST1
37
TRB_1_FN AUX4
3
TRB AUX3
2
AUX2
1
AUX1
48
VMULT4
11
VMULT3
12
VMULT2
14
VMULT1
15
R3741
16_8MHz_1_FN 100 MODOUT
41
16.8MHz FREFOUT
19
XTAL2
24
XTAL1
23
120mV RMS
C3741
NU
400mV RMS
1
C3761
C3735
56pF
C3762
R3762
330pF
NU
U3711
7.5V
ADP3300
2
SWB_PLUS_1_FN
NR
4 5
OUT IN SWB+
6 3
ERR SD
C3712
1
C3713
0.1uF
2.2uF
2.5V - 3.5V
1
TP3702
NC3
31
NC2
29
NC1
17
C3726
R3727
8.2pF
CCOMP 100K
42
REFSEL
18
PREIN
32
C3755
SFBASE PRESC_1_FN
27 2.2uF C3727
SFCAP
100pF
26
R3752
330K
U3701
BIAS2
63A27 39
BIAS1
40
R3751
200K
VBPASS C3752
21
C3753 1000pF
PVREF
35
4.7uF
DATA_1_FN
SFIN DATA
30
DATA MODIN_1_FN
7
MODIN
MODIN
10
CSX_1_FN
CSX
CEX
9
CLK CLK
8
CLK_1_FN
C3742 C3745
220pF 220pF
C3744
C3743
220pF
220pF
R3761
Y3761
47K
16.8MHz 45J49
2
IN OUT
R3760 C3763 C3731 C3732
1.6pF .01uF
.01uF
NU
D3761
NU
Y3762
OSC_16.8MHZ
16.8MHz
R3763
NU
NU
4 VDD 1
GND 5V
C3751
NU
-41
9B
PRESC
VSF_1_FN
VSF
C3754
0.1uF
4.55V
L3731
Vdda_1_FN
2.2uH
Vdda
C3733 C3734
2.2uF .01uF
3.3V
ZMY0130322-D

VHF Synthesizer Schematic Diagram