Figure 8-53. Nle 4273A Uhf Range 2 Receiver Back End Circuit Schematic - Motorola ASTRO XTS 5000 Detailed Service Manual

Schematics, Board Overlays, and Parts Lists: Transceiver (RF) Boards

Figure 8-53. NLE 4273A UHF Range 2 Receiver Back End Circuit Schematic

6881094C31-D
V5A
R501
56K
MMBTA13
C550
4.7uF
V3A V3E V5A Q502
BFQ67W
C560
E504
27pF
BK1005HM471
R508
330
1
TP18
V5A
V3D
C731
V3A
1uF
L508
2.2uH
C515
L542
RXIF
330nH
.01uF
C547
V3E V3E
8.2pF
L501 L502
10uH 10uH
C522
.047uF
C501
150pF
C523
C524
100pF
100pF
V3E
C525
0.1uF
10
C526
2200pF 11
V3E 12
E507
4.7uH
C532
C530
.047uF
0.1uF
C533 C534
100pF
100pF
V3E
C537
0.1uF
V3E
C541
0.1uF
Q501
C502
0.1uF
R502 C552 R503 C553
.01uF 4.7uF
180 10K TP502
D551
C554 *C555*
L504
4.7uH
10pF 12pF
C556
56pF
R506 L550 D550
10K 330nH BBY56
not placed
C557
56pF
2nd LO VCO 2nd LO LF
V3E
C521 C520 C519 C516
0.1uF 0.1uF 0.1uF 0.1uF
V5A
C517
0.1uF
E502
2480640Z01
V3E
C518
.047uF
1 36
MXOP GNDL
2 35
MXON FREF
3 34
GNDF GNDS2
4 33
IF2N SYNCB
5 32
IF2P GNDH
6 31
VDDF FS
U500
7 30
GCP AD9874 DOUTB
8 29
GCN DOUTA
9 28
VDDA CLKOUT
27
GNDA VDDH
26
VREFP VDDD
25
VREFN PE
C528 C529
0.1uF 0.1uF
R511
100K
C535
R512
10K
68pF
R513
L503 D501 C503
3.9uH 1SV279 0.1uF
10K
C539
.01uF
CLOCK VCO
C558
R507
0.1uF 2K
C559
0.47uF
V3E V3E
C543
FREF
R510
0.1uF
10K
C544
220pF
FS
DOUTA
CLKOUT
PE
PD
PC
C536 R514
0.1uF 510
C570 C571
0.47uF 0.47uF
CLOCK LF
MAEPF-27970-O
8-83
July 21, 2004