RV-B550BU
1-26
+
–
GND
B.P.F
V
CC
Vout
Amp.
Limiter Integrator Comparator
Demodulator
+
–
+
–
1
3
2
SHORT
PROTECTION
OVER VOLTAGE/
THERMAL SHUT
DOWN PROTECTION
TA78DL06S(IC390) : Regulator
INPUT
OUTPUT
GND
1
2
3
5
4
+
–
BA44W12ST-V5/Z1(IC310):Regulator
VCC
CTL
GND
OUT1
OUT2
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24 23 22 21 20 19 18 17 16 15 14 13
AM
FM
MONO
SY
V
CC
FM
ANTENNA
AM
ANTENNA
VT
OSC Buff OUT
IF OUT
IF REQ
AM
RF IN
FM
RF OUT
AM
OSC
FM
OSC
V
CC1
OSC
0UT
IF OUT
/REQ
DET OUT
MPX IN
LPF 1
LPF 2
VCO
FM
RF IN
GND 1 MIX
OUT
AGC
V
CC2
FM IF
AM IF
GND 2 FM
DET
FM
DET
ST
IIND
L OUT
R OUT
BPF
+-
+-
+-
+-
AM
RF
AM
OSC
FM
OSC
Buff
Buff
AM
REQ
SW
IF
Buff
AF
Buff
AM/FM
ST/MONO
SW
1/8 DIV
AM
DET
FM MPX
MUTE
ST
LED
LEVEL
DET
AM
IF
FM
IF
AGC
AM
MIX
FM
MIX
FM
RF
R OUT
L OUT
TA2008AN (IC 1): FM/AM,IF/DET
GP1U281X(IC903) : Remocon sensor
Block diagram