Figure 8-31. Nue7369A Frequency Generation Unit (Vco) Circuit – 2 Of 2 - Motorola APX 5000 Service Manual
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8-50
TP853
TEST_POINT
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
.039UF
6800PF
.016UF
R759
680
R767
68
ANA_ADAPT_CHARGE_PUMP
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 8-31. NUE7369A Frequency Generation Unit (VCO) Circuit – 2 of 2
ANA_VTUNE
C703
100PF
DNP
DC_LIN_1_5V
L806
390NH
DC_SUPER_FILTER_5V
C791
0.1UF
C794
100PF
7
1
VTUNE
POUT
DIG_CTRL_VTUR1
4
3
SEL1
NC
NC
5
Y704
DIG_CTRL_UR2
V0225AZ
U709
309MHZ/379MHZ
SKY13251
3
4
RF1
V1
5
6
RF2
V2
8
7
RF3
V3
1
NC
RFC
CGND
DC_SUPER_FILTER_5V
C792
0.1UF
C795
100PF
7
1
VTUNE
POUT
DIG_CTRL_UT1
3
4
SEL1
NC
NC
5
Y705
DIG_CTRL_UT2
V0225AZ
415MHZ/485MHZ
U710
SKY13251
3
4
V1
RF1
6
V2
5
RF2
7
8
V3
RF3
NC
1
RFC
CGND
NC
R811
C802
39
.22UF
C814
C816
L817
R819
R809
1000PF
100PF
390NH
270
5.6K
R807
22K
Q712
2
5
C820
C709
Q712
R813
R705
BC858CD
680
220PF
10
220PF
BC858CD
R808
C701
R812
R708
C813
82K
Q713
220PF
82
100
1PF
NE662M04
C810
R815
220PF
R818
24
4
8.2
3
C704
62PF
DC_LIN_1_5V
L701
R773
390NH
5.6K
C775
C777
C771
R772
1000PF
33PF
100PF
33
Q774
2
NE68519
R776
C779
39
100PF
R778
180
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1
C831
R713
100PF
10
Q714
R712
R714
NTZD3154N
560
560
1
6
2
5
NC
3
4
NC
NC
DC_LIN_1_5V
L821
390NH
R832
15
C806
.22UF
C838
C844
L846
R849
R827
390NH
560
1000PF
47PF
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
R848
C836
R716
15
47PF
TL_TX_LO
10
OUT
R701
R715
R717
100
560
560
RF_PRESCALAR
OUT
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