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DR-E34BK
DR-E34LBK
Ei LA1266A(1IC104):FM
AM
IF AMP & detector
1. The main function descriptions
(1) Amplify and detect of FM intermodulation frequencies.
(2) It has local oscillator and mixer for AM, and amplify the AM-IF signal.
2. Top View
3. Block Diagram
AM
AM
AM
FM
FM
Mix
iF
IF
STRQ
IF
-in
Bypass
FM-DET
Vec
FM-in
|}
AM-OSC out
f20f BY
tty
tay
opt
2
a
| fey
Cl.
Bypass
42
AM-OSC
7
Bypass
$3
V.ref
'
FM-OET
IS
AM-MIx
FM-DET
[6
AM-AGC
[Bem ase
Vee [7
AM-IF
[is]am out
Tuned
78
AM Adj.
1
FM-AFC
[9
FM Adj
FM-IF
$10
AM out
1
AM-IF
E1t
NAR
SM
t
FM-out
[12
STRQ
[8 }Tuned ino
1
NO Sig. +H
are
Sig. oL
AM
AM-OSC
AM-OSC
NAR
AGC
AM
FM
GND
sin
in
out
SM
Adj
Adj
Functions and Operations
This is an input terminal of FM IF Signal.
Bypass of FM IF Amp.
This is the device ground terminal.
The IF-signals come out from pint0 (FM-IF) or pin11(AM-IF) while this terminal going to "High".
This is a terminal of AM Local oscillation circuit.
AM Local Oscillation Signal output.
.
(No. 20162)
1-21
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