Figure 8-6. Nud7120A Receiver Back End Circuit - Motorola APX 5000 Service Manual

8-8
R698
0
DC_LIN_5V IN
C643 C641
470PF 33PF
MMBTA13
DC_LIN_3_0V
DC_LIN_1_875V_D IN
R699
0
DC_LIN_3V IN
C642
470PF
DC_LIN_3_0V
L601
C601
.01UF 220NH
1 2 1 2
TL_RX_IF_
IN
C605
3.9PF
E601
1 2
DC_LIN_3_0V
C603
.01UF
E602
1 2
DC_LIN_3_0V
C604
.01UF
E603
1 2
DC_LIN_3_0V
C602
.01UF
C607
100PF
E604
1 2
DC_LIN_3_0V
C606
0.1UF
E605
1 2
DC_LIN_3_0V

Figure 8-6. NUD7120A Receiver Back End Circuit

R607 C629
100K 0.1UF
1 2 1 2
1
R605
Q601 10K
RF_RX_BE_SUPFLTR_C
1
C608
3PF C618
TP601
1 1 2
33PF R606
TEST_POINT
10K
1 2
C619
R602
C609
62PF
27PF 390
R601
47
C621 C626
C617
0.1UF 1000PF
0.1UF
C623
.01UF
C628
L602
L603 .01UF
10UH
10UH
1 2
C615
150PF
U601
AD9864
C633
1 36
.01UF
MXOP GNDL
2 35 2
MXON FREF
3 34
GNDF GNDS2
1 2 4 33
IF2N SYNCB
5 32
C611 IF2P GNDH
100PF 6 31
VDDF FS
7 30
GCP DOUTB
1 2 8 29
GCN DOUTA
9 28
C610 VDDA CLKOUT
DC_RX_BE_VDDH
10 27
100PF
GNDA VDDH
DC_RX_BE_VDDD
11 26
VREFP VDDD
12 25
VREFN PE
C634
0.1UF
R603
100K
C612
.01UF
C613
100PF
R608 C632
10K 100PF
1 2
VR601
R604
1SV279
C620 390
0.1UF
C622
C624
.33UF
.33UF
C614
.01UF
C630
C627
1000PF 0.1UF
C625 C631
R612
R609
18PF 7.5K
15PF 2.2K
1 2 1 2
L604 VR602 C638 C639 R613
120NH
1SV279 2.4K
3300PF .01UF
C640
0.1UF
E606
1 2
DC_LIN_3_0V
E607
1 2
DC_LIN_5_0V
C636
IN CLK_16_8_MHZ
0.1UF
R624
0 DNP
DC_LIN_3_0V
1
R610
100K
R614
E609
0
1 2
C637
E608
0.1UF
R615
1 2
0 DNP
DC_LIN_3_0V
L605
3.9UH
R611
10K
1 2
DC_LIN_3_0V
C635
.01UF
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: VHF
DC_LIN_1_875V_D
DC_LIN_1_875V_D
U604
U603
VCC VCC
NC7WZ17
NC7WZ17
GND GND
DIG_RX_SYNCB
R616
0 DNP
DIG_DATA_SSI_RX_FS
1 6
DC_LIN_1_875V_D
U603
NC7WZ17
U607
NC7SZ125
OE
1
A Y
2 4
5
NC
R623
R617
0
0 DNP
DNP
3 4
OUT DIG_DATA_SSI_RX_DOUTA
U603
NC7WZ17
R618
0 DNP
1 6
OUT CLK_SSI_RX
U604
NC7WZ17
R619
0 DNP
U604
NC7WZ17
3
DC_LIN_3_0V
DC_LIN_1_875V_D
C1 C2
NC A2 B2
B1 B2
A1 B1 IN DIG_CTRL_SPI_PE
D2
DIR U605
SN74LVC2T45
R620 DC_LIN_1_875V_D
DC_LIN_3_0V
0 DNP
GND
A2 B2
C1 C2
B1 A1 B1 B2
D2 DIR
U606
SN74LVC2T45
DC_LIN_1_875V_D
DC_LIN_3_0V
IN
R621
DNP
IN
OUT
OUT DIG_RX_BE_DOUTB
4
NC
IN DIG_DATA_SPI_PD
DIG_CTRL_SPI_PC