Figure 9-221.Vhf Synthesizer Schematic Diagram - Motorola HT Series Detailed Service Manual

9-362
5V_1_FN
(SOURCE) 5V
C3705
0.1uF
VCTRL_1_FN
VCTRL
Q3721
UMC5N
R5_1_FN R5_2_FN
4
R5
T5_1_FN
T5
VCO_MOD_1_FN
VCO_MOD
SH3701 SH3702
SHIELD SHIELD SHIELD SHIELD
1 1
Figure 9-221. VHF Synthesizer Schematic Diagram
5V_2_FN
3
K3
2 K2
C3701
.01uF 1
K1
C3702 D3701
.01uF
C3703
.01uF
3
K3
2
C3704
K2
.01uF 1
K1
D3702
C3706 C3714
4.7uF
4.7uF
R3703
R3721
470
C3722
5V R3722
1K 0.1uF
C3721
3 0.1uF
2
1
R3723
100
1
TP3701
C3724
1uF
16.8MHz
2
4
6
C3711
C3715
10uF
470pF
L3701
390nH
4
A3
A2 5
A1 6
R3701
100
C3710
2.2uF
4
BIAS_ADJ
A3
5
A2
6
A1
BIAS_ADJ_1_FN
R3705
R3702
33K
0
NU
R3726 C3725
C3708
0.1uF 47K 0.1uF
NU NU
C3707
C3709
22pF
0.1uF
R3704
150 150
C3746
220pF
WARP
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
AUX3
TRB
2
AUX2
1
AUX1
48
VMULT4
11
VMULT3
12
VMULT2
14
VMULT1
15
100
R3741
16_8MHz_1_FN MODOUT
41
FREFOUT
19
XTAL2
24
XTAL1
23
56pF
C3741
NU
6
IN
C3761
56pF C3735
.01uF
NU
R3762
C3762
2.2K
330pF R3763
NU 100
NU
VHF Circuit Board/Schematic Diagrams and Parts List (PCB 8415112H01)
U3711
mgc_comps
SWB_PLUS_1_FN
NR
5
OUT IN SWB+
3
ERR SD
C3713
C3712
2.2uF
0.1uF
1
TP3702
NC3
31
NC2
29
NC1
17
8.2pF
R3727
C3726
CCOMP 100K
42
REFSEL
18
PRESC_1_FN
PREIN
2.2uF
32
SFBASE C3755 C3727 PRESC
27
SFCAP 100pF
26
BIAS2
39
BIAS1
40 R3752
R3751
330K
200K
VBPASS
21 C3752
C3753
mgc_comps
PVREF
35 1000pF
4.7uF
U3701 DATA_1_FN
SFIN DATA
30
MODIN_1_FN
DATA
7
MODIN MODIN
10
CSX_1_FN
CSX
CEX
9
CLK
CLK
8
CLK_1_FN
C3744 C3742 C3745 C3743
220pF 220pF
220pF 220pF
R3761
16.8MHz
47K
3
OUT
R3760 C3763 C3731 C3733
C3732
0 0 1.6pF
.01uF .01uF 2.2uF
NU
D3761
OSC_16.8MHZ
16.8MHz
NU
2 4
5V
GND VCC
C3751
0.1uF
NU
VSF_1_FN
VSF
C3754
0.1uF
Vdda_1_FN
Vdda
L3731
2.2uH
C3734
.01uF
ZMY0130483-A