LA1837_09 Datasheet, PDF (3/9 Pages) Sanyo Semicon Device – For Home Stereo IC with Electronic Tuning Support Single-Chip IC

Package Dimensions
unit : mm (typ)
3196A
27.0
30
16
LA1837
1
(1.04)
1.78
15
0.95
0.48
SANYO : DIP30SD(400mil)
Pd max – Ta
600
550
500
400
300
200
100
0
--40
--20
0
20
40
60
80
100
Ambient temperature, Ta -- °C
Block Diagram
OSC
BUFF
FM SD
VT
BAND-W
+
+
+
AM-STEREO
L/R-INPUT
+
L.P.F
L
L.P.F
R _{L-OUT R-OUT}
+
+
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
ALC
BUFF
AM
OSC
REG
AM
MIX
AM
RF.AMP
AGC
3 rd 5 th
DECODER
ANTI-BIRDIE
P-DET
φ
STEREO
SW
MUTE
AM IF
DET
SD
COMP
AM
S-METER
VCO FF
FF π
FF
PILOT
304kHz 38k 19k∠ 2 19k∠θ DET
FM
S-METER
S-CURVE
AM / FM
IF-BUFF
AM IF
FM
DET
1
FM IN
(10.7MHz)
2
3
4
FM IFT
+
TUNING STEREO
DRIVE DRIVE
GND
5
6
VCC
7
8
9
+
10 11 12 13 14 15
+
FM ST
+
+
AM
MONO
VCC
Top view
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