Figure 8-43. Nle4278A Uhf Range 1 Receiver Back End Circuit - Motorola ASTRO XTS 5000 Detailed Service Manual

Schematics, Board Overlays, and Parts Lists: Transceiver (RF) Boards
6881094C31-D
1
TP501
TP12
V3D
V3D V5A
1
V5A
C500
R509
V3D
3pF
47
C515
L547
RXIF
330nH
.01uF
C547
8.2pF
L501
10uH
73.35 MHz
C501
V3D
E503
150pF
C522
.01uF
C523
100pF
V3D
E506
C525
.01uF
C526
2200pF
V3D
E507
C532
.01uF
C530 C533
.01uF 100pF
V3D
E508
C537
0.1uF
V3D
E509
C541
0.1uF
V5A
C550
R501
100K
0.1uF
Q501
MMBTA13
R503 R506
10K 10K
C553 C552
R502
.033uF 1000pF
180
TP502
D551
1SV305
1
C554 C555
R504
Q502
BFQ67W
C551
10K
10pF 12pF
C556
3pF
56pF
L550 D550
1SV305
330nH
C560
27pF
R508 C557
56pF
330
LOP IOUTL
V3D
E501
C521 C520 C519 C516
0.1uF 0.1uF .01uF 1000pF
L502 C517
10uH .01uF
lon
V5A
cxvl cxvm
E502
cxif vddl
ifin vddp
vddi V3D
C518
0.1uF
C524 1 36 C543
MXOP GNDL
100pF
2 35
MXON FREF
3 34
GNDF GNDS2
.01uF
4 IF2N 33
SYNCB
5 32
IF2P GNDH
6 VDDF 31
U500 FS
7 30
GCP AD9874 DOUTB NC
8 29
GCN DOUTA
9 28
VDDA CLKOUT
10 27 vddh
GNDA VDDH
11 26 vddd
VREFP VDDD
12 25
VREFN PE
C528 C529
0.1uF 0.1uF
C534
100pF
R511
100K
IOUTC
C535
R512
CLKN
10K
68pF
V3D
D501
C536
L503
R513
1SV279 0.1uF
3.9uH
10K
CLKP
C539
.01uF

Figure 8-43. NLE4278A UHF Range 1 Receiver Back End Circuit

8-67
71.1 to 75.6 MHz
R552
7.5K
C559
R551
.01uF
C512 2K
3300pF
C558
0.1uF
V3D V3D
R510
E504 E505
100K
FREF
FS
DOUTA
CLKOUT
PE
PD
PC
1
TP515
R514
390
C570 C571
0.33uF 0.33uF
63B81097C46-O
July 21, 2004