Figure 8-34. Receiver Back End - Motorola APX 3000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Main Board Block: 700–800 MHz (84012501002)
R698
DC_LIN_5V
0
IN
C643
470PF
DC_LIN_1_875V_D
IN
DC_LIN_3_0V
R699
DC_LIN_3V
0
IN
C642
470PF
DC_LIN_3_0V
RF_RX_BE_IF_1
L611
TL_RX_IF
270NH
1 2
IN
C601
.01UF
C644
2.7PF
E601
DC_LIN_3_0V
E602
DC_LIN_3_0V
E603
DC_LIN_3_0V
DC_LIN_3_0V
DC_LIN_3_0V
R607 C629
DC_LIN_5_0V
100K 0.1UF
1 2 1 2
C641
33PF
DC_RX_BE_SUPFLTR_B
MMBTA13 1
Q601
R605
10K
RF_RX_BE_SUPFLTR_C
RF_RX_BE_VCO_B
U602 1
BFR380F
C608
C618
3PF
TP601
1 1 2 33PF
TEST_POINT
RF_RX_BE_VCO_E
RF_RX_BE_VCO_OUT2
C609
27PF
1 2
C619
R602
390 62PF
RF_RX_BE_VCO_OUT
R601
47
C621
C617 C626
0.1UF 0.1UF 1000PF
RF_RX_BE_IFIN
L601
DC_RX_BE_VDDL
220NH
DIG_RX_BE_CXVM
1 2
RF_RX_BE_CXIF
C623
RF_RX_BE_MX
.01UF
C645 C605
L603
2.7PF 3.9PF L602 DIG_RX_BE_CXVL
DNP 10UH
10UH
C628
RF_RX_BE_LON
C615 .01UF
150PF
1 2
DC_RX_BE_VDDP
DC_RX_BE_VDDI
U601
AD9864
RF_RX_BE_MXOP
1 36
MXOP GNDL
RF_RX_BE_MXON 2 35
C603
MXON FREF
C611
.01UF 3 34
100PF GNDF GNDS2
1 2 RF_RX_BE_IF2N 4 33 DIG_RX_BE_SYNCB
IF2N SYNCB
RF_RX_BE_IF2P 5 32
IF2P GNDH
DC_RX_BE_VDDF 6 31
VDDF FS
C610
RF_RX_BE_GCP 7 30
100PF GCP DOUTB
1 2 8 29
GCN DOUTA
9 28
VDDA CLKOUT
10 27
GNDA VDDH
DC_RX_BE_VREFP 11 26
C604 VREFP VDDD
.01UF 12 25
VREFN PE
DC_RX_BE_VDDQ
DC_RX_BE_VDDA DIG_RX_BE_RREF
C602
.01UF
R603
C612 100K
C607
.01UF DC_RX_BE_VDDC
100PF
DC_RX_BE_VREFN
CLK_RX_BE_CLKN
CLK_RX_BE_CLKP
C613
100PF RF_RX_BE_IOUT
C616
RF_RX_BE_18D
2200PF
1 2
R608
E604
10K
VR601
R604
1SV279
390
C620
0.1UF
RF_RX_BE_18T
C606
0.1UF
C624
C622
.33UF
.33UF
E605
C614
.01UF
C627
C630
1000PF
0.1UF
C646
8PF
RF_RX_BE_VCO_L
RF_RX_BE_VCO_F RF_RX_BE_VCO_TUNE
C631
8PF 1 2 1 2
C625 R609 R612
18PF RF_RX_BE_VCO_D 2.2K 7.5K
L604
R606 VR602 C638 R613
C639
120NH
10K 2.4K
1SV279 3300PF
.01UF
RF_RX_BE_VCO_A
C640
0.1UF
TP603
E606
TEST_POINT
DC_LIN_3_0V
E607
DC_LIN_5_0V
C636
IN CLK_16_8_MHZ
0.1UF
R624
0 DNP
C633
DC_LIN_3_0V
.01UF
2 CLK_RX_BE_FREF
1
R610
100K
DC_RX_BE_VDDH
DC_RX_BE_VDDD
E609 R614
0
DC_LIN_3_0V
C634 C637 E608
0.1UF 0.1UF
R615
0 DNP
DC_LIN_1_875V_D
DC_LIN_3_0V
C632
100PF
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
1 6
DC_LIN_1_875V_D
U603
NC7WZ17
U607
NC7SZ125
1 OE
2 A Y 4
5
NC
R623
R617
DIG_RX_DATA
0 DNP
0 DNP
3 4
OUT DIG_DATA_SSI_RX_DOUTA
U603
NC7WZ17
R618
DIG_RX_CLK
0 DNP
DIG_RX_FS
1 6
OUT CLK_SSI_RX
U604
NC7WZ17
R619
0 DNP U604
NC7WZ17
3 4
NC
U605
SN74LVC2T45
C1 A2 B2 C2
NC
B1 A1 B1
B2
DIG_CTRL_SPI_PE
IN
D2 DIR
DC_LIN_3_0V
DC_LIN_1_875V_D
R620
IN DIG_DATA_SPI_PD
0 DNP
C1 C2
A2
B2
B1 B2
A1
B1
D2
DIR
U606
DC_LIN_1_875V_D
SN74LVC2T45
DC_LIN_3_0V
IN DIG_CTRL_SPI_PC
R621
0 DNP
8-63
IN
OUT
OUT DIG_RX_BE_DOUTB

Figure 8-34. Receiver Back End