Figure 8-23. Nue7365A Frequency Generation Unit (Synthesizer) Circuit – 1 Of 2 - Motorola APX 5000 Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1
DC_LIN_1_5V
IN
DC_LIN_1_875V_D
IN
DC_LIN_2_775V
IN
DC_LIN_5V
IN
DC_LIN_2_775V
L720
2.2UH
C715
.1UF
D722
IMN10
C716
4 3
A1 K1
.1UF
5 2
A2 K2
6 1
A3 K3
C717
.1UF
C718
.1UF
D723
C719 IMN10
4 3
.1UF
A1 K1
5 2
A2 K2
6 1
A3 K3
DC_LIN_1_875V_D
R721
10K
DIG_CTRL_RSTB
IN
RF_PRESCALAR
IN
DC_LIN_2_775V DC_LIN_1_875V_D DC_LIN_2_775V
L733 L735
L727
2.2UH 2.2UH
C726
2.2UH
.1UF
C730 C734 C737
.1UF .1UF .1UF
C724 C725
10UF .1UF
DIG_DATA_AUX_SPI_MISO
SDM_REF_
VCC
D3
AGC_REF
A6
AGC_FLAG
K6
AUX_DAC
A5
RFSTEPA_GPO6
NC
C3
AGC_DAC
NC
B5
NC DC_CAL_GPO5
B2
BP_I
NC
C1
RXI
NC
C2
NC RXIX
B1
BP_IX
NC
A10
SDM_VAG
NC
E1
NC BP_Q
D1
RXQ
NC
D2
RXQX
NC
E2
NC BP_QX
F5
SCAN_IN
NC
B6
RX_EN_OUT
NC
J7
NC ICAP
K7
QCAP
NC
J10
CLK_OUT
NC
J11
NC TCLK
L6
NTXQ
NC
L7
TXQ
NC
K8
NC NTXI
L8
TXI
NC
F8
INCR_DECR
NC
G11
NC PHCLK
A3
FBQ
NC
A4
FBI
NC
DC_LIN_2_775V DC_LIN_2_775V_16_8_MHZ_IN
L728
390NH
C731
.1UF
Y701
1XTV16800VDA
R729 C736
16.8MHZ
22K .01UF
1 3
VCONT
OUTPUT
5
NC1 NC
6
NC2 NC
7
NC
NC3
8
C732
NC4 NC
100PF
DC_LIN_2_775V
L738
2.2UH
U702
15H28
R706
D9
SPI_DR
D8 0
CEX
D10
SPI_DW
C11
SPI_CLK
F9
TXFS
F10
TXCLK
F11
TXD
F7
DMCS
D11
RXD NC
E9
RXCLK NC
E8
RXFS NC
D7
RXACQ
J2
ESC_IN NC
L3
ESC_CP NC
K1
ESCD2_OUT NC
K2
ESCD2_OUTX NC
H2
ESC_INX NC
L9
HP_MOD_OUT
G2
MN_ADAPT_CP
R755
C749 .1UF
H1
M_PRSCX 39K
G1
M_PRSC
RF_PRESCALAR
G3
MN_CP
C744
10UF
C742
.1UF
DC_LIN_2_775V_16_8_MHZ_IN
L741
2.2UH
R702
0
R745
22K
C750
.1UF
C739
10PF
U746
1
C752
BFQ67W
180PF
R743
47K
R751
270
C710
560PF
Figure 8-23. NUE7365A Frequency Generation Unit (Synthesizer) Circuit – 1 of 2
DIG_DATA_SPI_MISO
DIG_CTRL_SPI_TRIDENT_PE
DIG_DATA_SPI_MOSI
DIG_CTRL_SSI_TRIGGER
ANA_ADAPT_CHARGE_PUMP
ANA_CHARGE_PUMP
DC_SUPER_FILTER_5V
C756 C757
10UF .1UF DC_LIN_2_775V
C758
.047UF
R707
0
U703
DIG_DATA_AUX_SPI_MISO
MAX7301ATL
V_POS
32 40
SCLK
DOUT
34 30
CS NC
P4
33 28
DIN
P5
26
P6 NC
36 24
ISET
P7
1
P8 NC
29 3
P31 P9
27 5
P30 NC
P10
25 7
P29
NC P11
23 2
NC P28 P12 NC
22 4
P27 NC
P13
R754 5.6K RF BRD ID 21 6
P26
P14 NC
19 8
P25 P15
RF BRD ID R753 18 9
P24 NC
P16
5.6K 17 10
P23
P17 NC
16 12
RF BRD ID
P22 P18
15 13
P21
R752 P19
14
5.6K P20 NC
11
NC
NC1
20
NC2 NC
31
NC3 NC
L753
2.2UH
C754 C712
C711 56PF 270PF
56PF
8-33
DC_LIN_2_775V
OUT
DC_LIN_1_5V
OUT
DIG_CTRL_LOCK
OUT
OUT
IN
IN
DIG_SPI_CLK
IN
DIG_TX_SSI_FS
OUT
DIG_TX_SSI_CLK
OUT
DIG_DATA_TX_SSI
IN
IN
RF_HP_MOD_OUT
OUT
OUT
OUT
OUT
DIG_CTRL_TU1H
OUT
DIG_CTRL_TR
OUT
DIG_CTRL_TR
OUT
DIG_CTRL_TXH1
OUT
DIG_CTRL_F
OUT
DIG_CTRL_C
OUT
DIG_CTRL_VTUR1
OUT
DIG_CTRL_UT1
OUT
DIG_CTRL_UT2
OUT
DIG_CTRL_ATTH
OUT
DIG_CTRL_I_LIMIT
OUT
DIG_CTRL_RMTH
OUT
DIG_CTRL_G
OUT
DIG_CTRL_B
OUT
DIG_CTRL_UR2
OUT
CLK_16_8_MHZ
OUT