Figure 9.3-19. Pmle4427A/ Pmle4427B Rx (Back-End) Schematic - Motorola XTS 2500 Service Manual

9.3-20
XCVR_5V
L413
330nH
IF
C449
8.2pF
DIG_3V
Figure 9.3-19. PMLE4427A/ PMLE4427B RX (back–end) Schematic
February 14, 2012
R420
Q402
56K
C482
4.7uF
C475
100pF
NU
C429
0.10uF
C428
.01uF
C463
.047uF
R436
0
L412
10uH
C476
C424
200pF
100pF
L411
10uH
1
MXOP
2
MXON
C405 3
GNDF
100pF
4
IF2N
5
IF2P
6
VDDF
7
GCP
8
GCN
9
VDDA
C465
10
0.10uF
C411 C412 GNDA
11
2200pF 0.10uF
VREFP
NU 12
VREFN
E406
IDCTR
4.7uH
C478
.047uF
R419
100K
C400 C417
100pF 100pF
C473
0.10uF
C464
0.10uF
R412
180
C481
4.7uF
E402
BK1005HM471
C433
C432
18pF
0.10uF
Q401
C434
.047uF
R413
330
C430
0.10uF
L414
C461 2.2uH
0.10uF
36
GNDL
35
FREF
34
GNDS2
33
SYNCB
32
GNDH
31
FS
U401
30
AD9874 DOUTB
29
DOUTA
28
CLKOUT
27
VDDH
26
VDDD
25
PE
C470
0.10uF
L403 C423
R407 R408
3.9uH 68pF
10K 1.8K
R406
10K
C472
0.10uF
D401
C422
.01uF
C421
0.1uF
NU
CLOCK VCO
UHF2 Schematics, Board Overlays, and Parts Lists
C442
.01uF
R414
10K
2nd LO LF
4.7uH
L407
C437 C438 R418
6.2pF 16pF 0
C435
56pF
L404
330nH
D403 D402
R415
C447
10K
470pF
C436
NP
56pF
2nd LO VCO
R499
10K
C483
100pF
NU
C448
.033uF
C425
0.1uF
CLOCK LF
C440
R417
0.33uF
1.1K
C441 C480
1uF 1uF
FREF
SyncB
FS
DOUTB
DOUTA
CLKOUT
PE
PD
PC
6816985H01-F