Figure 8-24. Nue7365A Frequency Generation Unit (Vco) Circuit – 2 Of 2 - Motorola APX 5000 Service Manual

8-34
TP853
TEST_POINT
DC_LIN_1_5V
IN
DC_SUPER_FILTER_5V
IN
DC_LIN_5V
IN
DIG_CTRL_TR
IN
DIG_CTRL_G
IN
DIG_CTRL_F
IN
R764
1.2K
ANA_CHARGE_PUMP
IN
C762 C766 C769
.039UF 6800PF .016UF
R759
680
R767
ANA_ADAPT_CHARGE_PUMP 68
IN
C760 C763 C765 C768 C770
.082UF .082UF .082UF .082UF .082UF
C783
1500PF
C759 R761
220
.22UF
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 8-24. NUE7365A Frequency Generation Unit (VCO) Circuit – 2 of 2
3
6
7
1
ANA_VTUNE
C703
100PF
DNP
DC_LIN_1_5V
L806
390NH
C802
.22UF
R807
22K
BC858CD
DC_SUPER_FILTER_5V
C791
R808
0.1UF
82K
C810
C794
220PF
100PF
VTUNE POUT
SEL1
NC NC
SEL2
Y704
U709
V0225AZ
309MHZ/379MHZ
SKY13251
4 V1 3
RF1
5 6
RF2 V2
8 7
RF3 V3
RFC 1
NC
CGND NC
DC_SUPER_FILTER_5V
C792
0.1UF
C795
100PF
VTUNE
POUT
SEL1
NC NC
SEL2
Y705
V0225AZ
415MHZ/485MHZ
U710
SKY13251
4
V1 RF1
5
V2 RF2
8
NC
V3 RF3
RFC
R811
39
C814 C816 L817 R819
R809
1000PF 100PF 390NH 270
5.6K
Q712 2 5 Q712 C820 R705 C709
R813
BC858CD 220PF 10 220PF
680
C701 R812 C813 R708
82 100
220PF 1PF Q713
NE662M04
R815
R818
24
4
8.2
3
C704
62PF
DC_LIN_1_5V
L701
R773
390NH
5.6K
C771
R772
C775 C777
100PF 33
Q774
2 1000PF 33PF
NE68519
C779
100PF
R776
39
R778
180
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1
C831
R713
100PF
10
Q714
R712 R714
NTZD3154N
560 560
1 6
NC
2 5
NC
3 4
NC
DC_LIN_1_5V
L821
390NH
R832
15
C806
.22UF
C838 C844 L846 R849
R827
560
1000PF 47PF 390NH
6.2K
R822
20K
Q703
Q703 C851
2 5
BC858CD
BC858CD
220PF
C702
R823 R833
220PF
56K 100
Q842
C830
R840 NE662M04
220PF
15
4
3
TP780
TEST_POINT
TL_RX_LO
OUT
C836
R848 R716
TL_TX_LO
15 47PF 0
OUT
R701 R715 R717
100 0 0
DNP DNP
RF_PRESCALAR
OUT