Figure 8-57. Nle 4273A Uhf Range 2 Frequency Generation Unit (Synthesizer) Circuit Schematic - Motorola ASTRO XTS 5000 Detailed Service Manual

Schematics, Board Overlays, and Parts Lists: Transceiver (RF) Boards
V3A
L201
2.2uH
C203
2.2uF
V5A V3A V3B
V5A
V3A
V3B
CLK
CSX
DATA
SCEN
V3B
C216
U203
0.1uF
AD5320BRT
5
SSI_CLK SCLK
6
SSI_FS SYNC
1
VOUT
4
SSI_DATA DIN
PRESC
TP23

Figure 8-57. NLE 4273A UHF Range 2 Frequency Generation Unit (Synthesizer) Circuit Schematic

6881094C31-D
C201
0.1uF
D201
4 3
C202
A1 K1
5 2
A2 K2
6 1
A3 K3
0.1uF
C204
0.1uF
C205
0.1uF
D202
V3A
C208
4 3
A1 K1
5 2
A2 K2
0.1uF
2.2uH
6 1
A3 K3
TP208 TP209 TP207
V3B
1
TP36
47K
R205
47K
Q201
R204
47K
R209
100K
C220
10uF
V3B
C215
0.1uF
FL200
MAX7414
8 TP210
TP299
CLK
7
SHDN
R218
2 5
IN OUT
8.2K R214
1 C212
1K
COM
220pF
6
OS
C221
0.1uF
C206 C207
10uF 0.1uF
L203 L204
2.2uH
V3A
C210 C211
0.1uF 0.1uF
23
V5A
XTAL1
24
XTAL2
8 19
CLK FREFOUT
9 41
CEX MODOUT
10
15
MODIN VMULT1
7 14
DATA VMULT2
30 12
SFIN VMULT3
11
VMULT4
U202
35
PVREF
63A27
21 48
VBPASS AUX1
1
AUX2
30K
40 2
BIAS1 AUX3
39 3
BIAS2 AUX4
26 37
SFCAP TEST1
27 38
SFBASE TEST2
32
PREIN
43
IOUT
18 45
REFSEL IADAPT
42 4
CCOMP LOCK
46
ADAPTSW
17 28
NC1 SFOUT
29 16 C222
NC2 INDMULT
4700pF
31 25
NC3 WARP
VSF
2
L207
1uH
1
V3A
L208
2.2uH C230 C231 C232
330pF .01uF 10uF
C233
0.1uF
C234
R215
1 3 1
VCON OUT TP19
10K
.01uF
C235
Y200
100pF
45J68
16.8MHz
V5A
L202
2.2uH
C209
0.1uF
R202
V3A
330
R201
5.1K
5
4
C213
R203
1
C237
3
0
U201
2 68pF
100pF
LMH6723
R208
5.1K
R207
270
C238
33pF
TPA2 TPA3 TPA4
R210
220
C217 C218 C219
R217
.047uF .0012uF
.047uF
680
R212
82
TP243
C241 C224 C225 C226 C227 C240
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
R213
10K
1 C229
TP21
100pF
MAEPF-27972-O
8-87
L205
F168
1uH
C214
330pF
AUX1
AUX2
AUX3
AUX4
VCTRL
R211
1K
LOCK
July 21, 2004