Philips PM 5390 - RF Unit 2

divider 1 (U2)
fp“
a5...22MHz
1kHz 10kHz
801
\ Z7]7
low- pass
filter
f1
-f2
-
50... 220
MHz
802 803
804
_
50
”0p
J2p
J22p
'“lOfi
w~
D
i
h
I
305
!LiJ1C90
r
;±
:.n
-306
9 10/11
j
CNT
1
ZSC^I
i
int. power
supply
m
m
’
592
?
593
,
—Dl
—
|i'
—
Dl
—
li'
220p
220p
until LO
06
pos.323
NE550
R691
28
K
7
R692
1
K 62
23I
2t| I0I 11|
12|
13l
1S|
16|
17| 18| 19| 20|
Z?|
2B|
progromming
inputs
MOD
Vqq
phase
comp.
in
314
PCI
HEFW50
loop
filter
—I
578
I
1
lOOn
I
0678
L^U-L
Frequency
synthesizer
OUT
R
ISA
|573
J574 J575
16n JOn
|6„|5,Neu
I"'
I
'4^^i^FR96
__533^
VC0
2b
—
H
Prescaler
256;1
633 546
-
\360R\
II
—
In
progr.
divider
2
597
—II—
I
12pF
308
HEFiOW
LIMJJJ
||661
-
5
MHz ref.
oscillator
666
|—
l
/54ff~|
—
I
J
J566
;^C548B
Jin
T
751
IsMHzTyynr.
J>p J..30^2£
548 638
-HI
—
divider 5
128
••
1
jS50
J551
S
JOOpJ22n
Jo®
Vqq
+12
Pin16
Vgs
Pin 8
552j_
2p2
€ S
4-SC548SJ
Phase comparator
491 492 493 494 495
OV
F
A
E C,D
B
from
U2
may be
altered
in test
Fig.
46
RFunit2