Motorola CDM Series Detailed Service Manual page 370

Section 7 : 4-18
IN_5V_RF_REG
Low Band Range 1 (29.7–36 MHz) FRACN Synthesizer
6881091C63-F
C1252
.018uF
U1250
LP2951
IN_5V_RF_REG_FRACN_1
8 1
INPUT OUTPUT
7 5
C1251
FEEDBACK ERROR
C1250 3 2
SHUTDOWN
SENSE
6
2.2uF 0.1uF
5V_TAP
4
L1201
27uH
C1201
0.1uF
CLK_FRACN_1
CLK
CSX_FRACN_1
CSX
MODIN_FRACN_1 R1221
MODIN
0
DATA_FRACN_1
DATA
9V3_FRACN_1
9V3
C1232
.039uF
FN0:NP
VSF_FRACN_1
VSF
R1214
7.6VDC
2.2VDC
1.6K
Q1202
PRE_IN_FRACN_1 R1212
PRE_IN
100
C1221 R1213
1.5VDC
1pF 680
R1215
FN0:NP
68
Y1202
16.8MHz
TTS05V
FN0:NP
3
R1222
100
5V_FRACN_1 5V_FRACN_2 FN0:NP
5V
C1254
C1253
C1233
.01uF
4.7uF .01uF
FN0:NP
C1206
62pF
C1204 C1205
1pF
L1202
220pF FN0:NP
2.2uH
C1203
R1201 .01uF
0
13.1VDC
C1202
C1211 C1210
4.7uF
.01uF
0.1uF
23
XTAL1
24
XTAL2
R1217
8 19
CLK FREFOUT
9
41
CEX MODOUT 100
10 15
MODIN VMULT1
7 14
DATA VMULT2
30 12
SFIN VMULT3
11
VMULT4
C1220 35
R1211 PVREF U1201
4.7uF 21
48
470K VBPASS 63A27 AUX1
1
AUX2
40
2
R1207 BIAS1 AUX3
39 3
820K BIAS2 AUX4
Q1201
26 37
FN0:NP
SFCAP TEST1
27 38
SFBASE TEST2
32
PREIN
43
IOUT
C1219
18
45
REFSEL IADAPT L1204
4.7uF
42 4
CCOMP LOCK 27uH
46
FN0:NP
ADAPTSW
17 28 R1210
NC1 SFOUT
29 220
16
NC2 INDMULT
31 25
C1228
NC3 WARP
200pF
FN0:NP
R1209
3.3K
8.7VDC
C1217 C1216
C1218
0.1uF
.01uF 1500pF
4.7uF
C1225 L1206
.01uF 27uH
C1227
.01uF
R1216
51
L1205
C1223
680nH
-5 to 0 dBm
C1222 .01uF
27pF C1224
100pF
Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists
2
GND
1
OUT VCNTL
VCC
Comment: The NOISE_BLNKR line is required because it
is routed through the FracN from the Controller.
NOISE_BLNKR_FRACN_1 NOISE_BLNKR_FRACN_2
C1234
0.1uF
FN0:NP
Y1201
R1203
2 - 3 VDC
2 1
150K
16.8MHz
XTAL C1207
CR1201
1.5pF
R1202
1.2K
FN0:NP
R1218
47
CR1202
3 4
K3 A3
2 5
K2 A2
C1231 1 6
K1 A1
.01uF
C1209
L1207
10uF
2.2uH
FN0:NP
R1204 16_8MHZ_FRACN_1
2.9VDC, 0.46Vpp
16_8MHZ
0
C1229
R1219
47
.01uF
C1230
R1220
47 BWSELECT_FRACN_1
.01uF
BWSELECT
TRB_FRACN_1
0VDC (R), 4.7VDC (T)
TRB
R1206 VCTRL_FRACN_1
2.5 - 11 VDC
VCTRL
470
C1214
C1213
R1205 .033uF
0.22uF 680
R1208
51
TP1201
TEST_POINT
2.5 - 11 VDC
C1226
C1215
C1212 1uF
6800pF 1uF FN0:NP
C1208
4.9VDC (LOCKED)
LOCK_FRACN_1
0VDC (UNLOCKED)
LOCK
SH1201 SH1202
SHIELD SHIELD
FN0:NP FN0:NP
NOISE_BLNKR