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10 MHz REF
(15
16
LOOP
FIL TEA
U211
1
- - - - -
--
---------
--
----------..~500-1000 MHz PLL
ll"3~i.!J
U209
U208
.3lD-44ll
iM
l
--
~
f----
\)(;{!
U105.
1
1
0§.
1i1.
l
~l:?
SYNTH
10 MHz
REFERENCE
DIVIDER
I
PHASE/
1
~
}_,': __ T: __
f--_
--=
'.
~-~
.--~--50
KHz
f------;----~~
LOW PASS
Fl
L
TER
J1
~--------~~~
50 Hz
U129-134
CONTROL
:
160
5
MHz_P_L-_L~~:---
. ... -_- __
- . . . . t . , ~ ~
~
-
0
1
2
-
2 : ~
- ,
--
~
I
LOOP
60
4-tm 6
MHl :
l--.--------;-1_
FIL TEA
f---
VCO
:
PI
FM
MOD
U217
1
PHASE/
FREO
OET
0218
U102
PHASE
SWITCH
0212
I
500-700
MHz
I
~
I
vco
j
I
I
700-1000
MHz
r--
VCO
~
Q213
I
I
u
109
I
LOOP
I
......
FILTER
r---
I
'
I
--
55.56
)-,;---------t'"""""'~
I
PHASE/
~
IJIOI
~j
--
------
-- - - -- - - - --
__ _ _ j
--
: SWP
53 54
}----'-~-------r----,
I
!
I
1
1
I
I
I
MODULATION
r-
CONTROL
U213-216
I
FREO
I
DET
U128
L
--
- - - - -
- -------
1
550
MH~Pll
LOOP
FIL TEA
5Sll MHl.'
\I'
CO
~
U204
1
U203
I
1
1
PHASE/
rG
I
L_____:_:10::....M:.:.:.:.:.:Hz:....._ ____
--t-__ --t
1
~
FREO
~s t---~'-------1
I
OET
I
U202
- - - -
-----
500-1000 MHz
250-500
MHz
550
MH2
0.01-250
MHz
U206
SYNTH SWP SYNC
'\ "'\ SYNTH
1
KHz
1'\
SYNTH
5
KHz
1"\
SYNTH 10 KHz
1'\
SYNTH SO KHz
1"\
SYNTH 100 Hz
SYNTH
500
KHz
OUTPUT
SYNTH
RF
SELECT
CR206-208. 210-212.
223-226. K201
5,
6
7,
8
3.
4
15.
16
11. 12
9, 10
13,
14
J2
JI_~A~L~C~V~OL~T
_ _ _ _ _ _ _
~--~~----------c~fFill~-------~
P1
67. 68
' > -
t
c=---~--------------------____1~~~------------------...L-----------------------'--------l:--
. . . . . . .
57. 58
I
I
LO/HI
BANO
SELECT
I
I
I
RF ADD BUS 0-3
CONTROL
U112. 123. 137-145
1
45.52
'>--1--------------------,
LATCHES
I
I
AF
LATCH
ADO
13/14
I
tL-------------------------------=---_____;...;::___~
2a. 29
:
l
17 ·20
~~---:R::F ~D::AT;:::A;:B:-U_S_0_-3
____
1
23-26 ,
I
ADDRESS
DECODE
RF BUS EN
21.
22 /\.....J.--~...:....:..-=-------------,'-----
U136
8521-.34
Figure 11-1.
RF Synthesizer
AS
Block Diagram
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