Figure 8-36. Nle4272A Uhf Range 1 Frequency Generation Unit (Synthesizer) Circuit - Motorola ASTRO XTS 5000 Detailed Service Manual

Schematics, Board Overlays, and Parts Lists: Transceiver (RF) Boards
Vdd5 Vdd3
Vdd5
Vdd3
CLK
CSX
DATA
Vdd3
47K
SCEN
47K
Q701
DTC144EKA
R209
10K
Vdd3 Vdd3
C216 C215
0.1uF 0.1uF
3 4
8
CLK
5 7
SSCK SCLK SHDN
6
SSFS SYNC
1 2
VOUT IN OUT
SSTD DIN
1
COM
6
OS
U203
2
AD5320BRT
3
C221
0.1uF
PRESC
6881094C31-D
Vdd3
L203
2.2uH
TP210
Vdd5
1
8
9
10
7
30
VSF
35
NC
R205
21
NC
39K
40
R204
39
56K
26
27
NC
32
C220
10uF 18
NC
42
NC
R216
5 17
NC
29
NC
8.2K
31
NC
C337
R220
220pF 27K
FL200
MAX7414 np=delete
Vdd3
TP299
1
R214
1K
R215
10K
C235
100pF
Vdd3
L204
2.2uH
Vdd3
C210 C211
0.1uF 0.1uF
VCP
23 C207
C206
XTAL1
0.1uF 10uF
24
XTAL2 NC
19
CLK FREFOUT NC
41
CEX MODOUT
15
MODIN VMULT1
14
DATA VMULT2 NC
12
SFIN VMULT3
11
VMULT4
PVREF
48
VBPASS AUX1
1
U202
AUX2
2
63A27
BIAS1 AUX3
3
BIAS2 AUX4
37
SFCAP TEST1 NC
38
SFBASE TEST2 NC
PREIN
43
IOUT
45
REFSEL IADAPT
4
CCOMP LOCK
46
ADAPTSW NC
28
NC1 SFOUT
16
NC2 INDMULT NC
25
NC3 WARP
C230 C231
120pF .01uF
Vdd5
L202
C233 2.2uH
L208
2.2uH
0.1uF
4
C234 C236
1 3
VCON OUT
.01uF 1000pF
Y200
2
45J68
freq=16.8MHz

Figure 8-36. NLE4272A UHF Range 1 Frequency Generation Unit (Synthesizer) Circuit

1 6
K3 A3
2 5
K2 A2
3 4
C208
K1 A1
D202
0.1uF
C205
0.1uF
1 6
C202
K3 A3
2 5
K2 A2
3 4 C204
K1 A1
0.1uF 0.1uF
D201
C201
0.1uF
R210
390
C222 C217 C218
R217
4700pF .047uF .047uF
1.2K
R212
VSF
120
2
L207
1uH
1 C224
C225 C226
0.1uF
0.1uF 0.1uF
C232
10uF
C209
0.1uF
R202
R201
33K
2K
4 5
C213
R207
1
3
39
2 U201 1000pF
CLC450
R208
33K
8-53
Vdd3
L201
2.2uH
C203
2.2uF
AUX1
AUX2
AUX3
AUX4
VCTRL
TP243
C219
R211
2000pF
1K
1
C227 C242 C925
0.1uF 0.1uF 0.1uF
R213
LOCK
10K
C229
100pF
L205
F168
1uH
C214
100pF
63B81097C01-O
July 21, 2004