Figure 8-45. Receiver Back End Circuit - Motorola APX 1000 Detailed Service Manual

8-112
R698 DC_LIN_5_0V
DC_LIN_5V
0
IN
C643 C641
470PF 33PF
MMBTA13
DC_LIN_3_0V
DC_LIN_1_875V_D
IN
R699
DC_LIN_3V
0
IN
C642
470PF
DC_LIN_3_0V
L611
RF_RX_BE_IF_1 RF_RX_BE_IFIN
TL_RX_IF
270NH
1 2 1 2
IN
L601
C601
220NH
.01UF
C644
C645
2.7PF 2.7PF
DNP
E601
1 2 DC_RX_BE_VDDI
DC_LIN_3_0V
C603
.01UF
DC_RX_BE_VDDF 100PF
E602
1 2
DC_LIN_3_0V
C604
.01UF
E603
1 2 DC_RX_BE_VDDA
DC_LIN_3_0V
C602
.01UF
100PF
E604
1 2
DC_LIN_3_0V
E605
1 2
DC_LIN_3_0V

Figure 8-45. Receiver Back End Circuit

R607
C629
100K
0.1UF
1 2 1 2
DC_RX_BE_SUPFLTR_B
1
Q601
R605
10K
RF_RX_BE_SUPFLTR_C
RF_RX_BE_VCO_B
1
U602
BFR380F
C608
C618
3PF
33PF
1 1 2
TP601
TEST_POINT
RF_RX_BE_VCO_E
RF_RX_BE_VCO_OUT2
C609
27PF
1 2
C619
R602
62PF
390
RF_RX_BE_VCO_OUT
R601
47 C621
C617 C626
0.1UF 0.1UF 1000PF
DC_RX_BE_VDDL
DIG_RX_BE_CXVM
RF_RX_BE_CXIF
RF_RX_BE_MX
C623
C605 C628
L602 L603 DIG_RX_BE_CXVL .01UF .01UF
3.9PF
10UH 10UH
RF_RX_BE_LON
C615
150PF
1 2
DC_RX_BE_VDDP
U601
AD9864
RF_RX_BE_MXOP 1 36
MXOP GNDL
RF_RX_BE_MXON 2 35
MXON FREF
3 34
GNDF GNDS2
1 2 RF_RX_BE_IF2N 4 33 DIG_RX_BE_SYNCB
IF2N SYNCB
RF_RX_BE_IF2P 5 32
C611
IF2P GNDH
6 31
VDDF FS
RF_RX_BE_GCP 7 30
GCP DOUTB
1 2 8 29
GCN DOUTA
9 28
C610 VDDA CLKOUT
10 27 DC_RX_BE_VDDH
100PF
GNDA VDDH
DC_RX_BE_VDDD
DC_RX_BE_VREFP 11 26
VREFP VDDD
12 25
VREFN PE
0.1UF
DC_RX_BE_VDDQ
DIG_RX_BE_RREF
R603
100K
C607 C612
.01UF DC_RX_BE_VDDC
DC_RX_BE_VREFN
CLK_RX_BE_CLKN
CLK_RX_BE_CLKP
C613
100PF RF_RX_BE_IOUT
C616
C632
2200PF RF_RX_BE_18D
100PF
1 2
R608
10K
VR601
R604
1SV279
C620
390
0.1UF
RF_RX_BE_18T
C606
0.1UF
C614
.01UF
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1 (84012313002 / PC000353A01)
C630
C627
0.1UF
1000PF
C646
8PF
RF_RX_BE_VCO_F
RF_RX_BE_VCO_L
R609 R612
C631
2.2K 7.5K RF_RX_BE_VCO_TUNE
7PF 1 2 1 2
C625
RF_RX_BE_VCO_D
18PF
R606 VR602 R613
L604 C638 C639
10K 2.4K
120NH 1SV279 3300PF .01UF
RF_RX_BE_VCO_A
C640
0.1UF
E606
1 2
DC_LIN_3_0V
E607
1 2
DC_LIN_5_0V
C636
CLK_16_8_MHZ
IN
0.1UF
R624
C633
0 DNP
DC_LIN_3_0V
.01UF
2 1 CLK_RX_BE_FREF
R610
100K
R614
E609
0
1 2 DC_LIN_3_0V
C634 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
DC_LIN_1_875V_D
DC_LIN_1_875V_D
U604 U603
NC7WZ17 NC7WZ17
VCC VCC
GND GND
DIG_RX_SYNCB
R616
0 DNP
DIG_DATA_SSI_RX_FS
U603
NC7WZ17
1 6
DC_LIN_1_875V_D
U607
NC7SZ125
1 OE
2 A Y 4
5
NC
R623
R617
DIG_RX_DATA 0 DNP
0 DNP
3 4
DIG_DATA_SSI_RX_DOUTA
OUT
U603
NC7WZ17
R618
0
DIG_RX_CLK
DNP
DIG_RX_FS
1 6
OUT
U604
NC7WZ17
R619
0 DNP
U604
NC7WZ17
3
DC_LIN_1_875V_D C1 A2 B2 C2
NC
B1 A1 B1 B2
IN
D2 DIR
U605
SN74LVC2T45
DC_LIN_1_875V_D
R620
DC_LIN_3_0V
0 DNP
C1 A2 C2
B2
B1 A1 B2
B1
D2 DIR
U606
SN74LVC2T45
DC_LIN_1_875V_D
DC_LIN_3_0V
IN
R621
0 DNP
IN
OUT
DIG_RX_BE_DOUTB
OUT
CLK_SSI_RX
4
NC
DIG_CTRL_SPI_PE
IN DIG_DATA_SPI_PD
DIG_CTRL_SPI_PC