Filter
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T. S. D
BS BS
Vcc
30K 30K
30K30K
45 45
ST.BY
FILTER
1 2
3
4
5
6
7
8 9
10
11 12
13
14
15
POWER
GND
PRE
GND1
PRE
GND2
BA5417
BPF
Vtune
FM Ant
AM
MONO
R-OUT
L-OUT
FM
ST
GND2
FM
R
V
FM
OSC
MUTE
DECODER
PHASE
COMP
PILOT
DET
FM
DET
FF
FF
FF
VCO
ST SW
TRIG
FM
MIX
AM
R
AM
MIX
AM
OSC
REG
AM Ant
OSC
BUFFER
V
GND1
IF
BUFFER
SD ST
FM
S-METER
AM
DET
AGC
FM
IF
AM
IF
AM/FM Mute
IF Buff
ST
10.7MHz
V
450KHz
CC
2
F
F
CC
1
1 2 3 4 5
6 7 8 9 10 11 12
AM OSC
Buff
CC
24 23 22 21 20
19 18 17 16 15 14 13
LA1823
IC BLOCK DIAGRAMS
8