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• IC Block Diagrams
U1 U2765B-AFSG3 (BASE RF Board)
U1 U2765B-AFSG3 (HAND RF Board)
28
27 26
25 24 23
22
LOCAL OSC
BUFFER
MIX
LIMITER
AMP
A1
1
2
3
4 5 6 7
8
U2 TB31202BFN-EL (HAND RF Board)
U10 TB31202BFN-EL (BASE RF Board)
15
14
16
PHASE
1/2
COMPARATOR
OUTPUT
1
PROGRAMABLE
BUF
––––––––
32, 33
DIVIDER
1
PROGRAMABLE
BUF
––––––––
32, 33
DIVIDER
PHASE
1/2
COMPARATOR
OUTPUT
2
3
1
21 20 19 18
17 16
LIMITER
DE-
AMP
MODULATOR
RSSI
COMPARATOR
+
–
9
10
11
12
11
13
12
SWITCH
L. OSC
1/2
REFERENCE
DIVIDER
LOCK
DET
4
6
5
15
VCC/2
SLICER
+
–
13
14
10
9
BUF
CONTROL
CIRCUIT
7
8
– 29 –
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