Figure 8-44. Nue7366A Frequency Generation Unit (Vco) Circuit – 2 Of 2 - Motorola APX 5000 Service Manual

8-70
DC_LIN_1_5V
IN
IN
DC_SUPER_FILTER_5V
IN
DC_LIN_5V
DIG_CTRL_TR
IN
DIG_CTRL_G
IN
DIG_CTRL_F
IN
R764
1.2K
ANA_CHARGE_PUMP
IN
C762 C766 C769
R759 .039UF 6800PF .016UF
680
R767
ANA_ADAPT_CHARGE_PUMP 68
IN
C760 C763 C765 C768 C770
.082UF .082UF .082UF .082UF .082UF
C783
1500PF
C759 R761
.22UF 220
R762
11K
RF_HP_MOD_OUT
IN
DIG_CTRL_VTUR1
IN
DIG_CTRL_UR2
IN
DIG_CTRL_UT1
IN
DIG_CTRL_UT2
IN
DIG_CTRL_C
IN
DIG_CTRL_B
IN
Figure 8-44. NUE7366A Frequency Generation Unit (VCO) Circuit – 2 of 2
U710
SKY13251
3 V1
RF1
6 V2
RF2
7
V3
RF3
1
RFC
NC
C703
100PF
DNP
DC_LIN_1_5V
L806
390NH
R811
C802 39
.22UF
R809
5.6K
R807
22K
2
Q712
BC858CD
DC_SUPER_FILTER_5V
R808
82K
220PF
C791
C794
0.1UF
100PF
7 1
VTUNE
POUT C810
R815
4 220PF
3 24
SEL1 NC NC
5
Y704
V0225AZ
U709
309MHZ/379MHZ
SKY13251
4 3
RF1 V1
5 6
RF2 V2
8 V3 7
RF3
1
RFC
NC
NC
DC_SUPER_FILTER_5V
C792
C795 C771
0.1UF
100PF 100PF
7 1
VTUNE
POUT
4
3
SEL1 NC NC
5
Y705
V0225AZ
415MHZ/485MHZ
4
5
8
NC
C830
220PF
C814 C816 L817 R819
1000PF 100PF 390NH 270
5 C820
Q712 R813 R705 C709
220PF
BC858CD 680 10 220PF
C701 R812 C813 R708
82 Q713 100
1PF
NE662M04
R818
4
8.2
3
C704
62PF
DC_LIN_1_5V
L701
R773
390NH
5.6K
C775 C777
R772
1000PF 33PF
33
2 Q774
NE68519
C779
R776
100PF
39
R778
180
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF2
C831
R713
100PF 10
Q714
R712 R714
NTZD3154N
560 560
1 6
2 5
NC
NC
3 4
NC
DC_LIN_1_5V
L821
390NH
R832
15
C806
.22UF
L846 R849
C838 C844
R827
1000PF 47PF 390NH 560
6.2K
R822
20K
Q703
Q703 2 5 C851
BC858CD
220PF
BC858CD
C702
R823 R833
220PF
56K
100
Q842
R840 NE662M04
15
4
3
TP780
TEST_POINT
TL_RX_LO
OUT
R848 C836
R716
TL_TX_LO
15 47PF
10
OUT
R701 R715 R717
100 560 560
RF_PRESCALAR
OUT