LA1845N_09 Datasheet, PDF (3/9 Pages) Sanyo Semicon Device – For Home Stereo IC Single-Chip Tuner IC

Package Dimensions
unit : mm (typ)
3067B
21.0
24
13
1
0.9
12
0.95
LA1845N
(0.71)
1.78
0.48
SANYO : DIP24S(300mil)
Block Diagram
OSC
BUFF
VT
+
FM SD
ADJ
OSC
RF
+
V-SM ⁺
R
L
FM
BAND-W ₂₄
23
22
21
20
19
18
17
16
15
14
13
ALC
BUFF
AM
OSC
AM
AM
MIX
RF.AMP
AGC
DECODER
ANTI-BIRDIE
PILOT
CANCEL
LEVEL
DET
FM
IF
S-CURVE
FM
DET
AM/FM
IF
BUFF
AM
AM
IF
DET
COMP
TUNING
DRIVE
REG
GND
P-DET
φ
STEREO
SW
VCO
304kHz
FF
38K
FF
19K∠
π
2
FF
PILOT
19K∠0 DET
VCC
FM-IN
(10.7MHz)
+
1
2
3
4
5
6
7
8
9
10
11
12
450kHz
TU-LED
ST-LED
FM
AM/FM
IF-BUFF
+ ^{+ AM}
SEEK
MUTE
ST
+ _MONO
VCC
For AM stereo IFOUT
(4.3 to 8.5V)
Top view
No.7185-3/9