Figure 8-54. Nuf6750A Receiver Back End Circuit - Motorola APX 5000 Service Manual

8-86
R698
0
DC_LIN_5V IN
C643 C641
470PF 33PF
Q601
MMBTA13
DC_LIN_1_875V_D
DC_LIN_3_0V
IN
R699
DC_LIN_3V
0
IN
C642
470PF
DC_LIN_3_0V
C601 L601
TL_RX_IF_ .01UF 220NH
1 2 1 2
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
E604
1 2
DC_LIN_3_0V
C606
0.1UF
E605
1 2
DC_LIN_3_0V

Figure 8-54. NUF6750A Receiver Back End Circuit

C629
R607
0.1UF
100K
1 2 1 2
1
R605
10K
1
U602
BFR380F
C608
3PF C618
1 1 2 R606
TP601 33PF
TEST_POINT 10K
1 2
R602
C619
C609
390
27PF 62PF
R601
47
C626
C617 C621
1000PF
0.1UF 0.1UF
C623
.01UF
C628
L602 L603 .01UF
10UH 10UH
1 2
C636
0.1UF
C615
150PF
U601
AD9864
C633
1 36
.01UF
MXOP GNDL
2 35 2 1
MXON FREF
3 34
GNDF GNDS2
1 2 4 33
IF2N SYNCB
C611 5 32
IF2P GNDH
100PF 6 31
VDDF FS
7 30
GCP DOUTB
1 2 8 29
GCN DOUTA
9 28
C610 VDDA CLKOUT
10 27
100PF
GNDA VDDH
11 26
VREFP VDDD
12 25
VREFN PE
C634
0.1UF
R603
100K
C612
C607
.01UF
100PF
C613
100PF C616
C632
R608
2200PF
10K 100PF
1 2
VR601
R604
1SV279
C620 390 L605
3.9UH
0.1UF
C622 C624
.33UF
.33UF
C614
.01UF
C627 C630
1000PF 0.1UF
C625 C631
R609 R612
18PF 15PF
2.2K 7.5K
1 2 1 2
L604 VR602
C639 R613
C638
120NH 1SV279
.01UF 2.4K
3300PF
C640
0.1UF
E606
1
2
DC_LIN_3_0V
E607
1 2
DC_LIN_5_0V
IN
CLK_16_8_MHZ
R624
0
DNP
DC_LIN_3_0V
R610
100K
R614
E609
0
DC_LIN_3_0V
1 2
C637
E608
0.1UF R615
0
1 2
DNP
DC_LIN_1_875V_D
DC_LIN_3_0V
R611
10K
1 2
DC_LIN_3_0V
C635
.01UF
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: 700–800 MHz
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
U607
U603
NC7WZ17 NC7SZ125
1 OE
2 A Y
4
5
NC
R623
R617
0 DNP
0 DNP
3 4
DIG_DATA_SSI_RX_DOUTA
OUT
U603
NC7WZ17
R618
0 DNP
DIG_RX_FS
1 6
OUT CLK_SSI_RX
U604
NC7WZ17
R619
0 DNP
U604
NC7WZ17
3 4
C1 C2
NC A2 B2
B1 B2
A1 B1
IN DIG_CTRL_SPI_PE
D2
DIR
U605
SN74LVC2T45
R620
DC_LIN_1_875V_D
0
DC_LIN_3_0V
DNP IN
GND
C1 A2 C2
B2
B1 A1 B2
B1
D2 DIR
U606
SN74LVC2T45
DC_LIN_1_875V_D
DC_LIN_3_0V
IN DIG_CTRL_SPI_PC
R621
0 DNP
IN
OUT
OUT DIG_RX_BE_DOUTB
NC
DIG_DATA_SPI_PD