JVC CA-MXG9BK - FM AM IF AMP & Detector IC (IC104); IC104 Functions and Pin Details

RX-MXG9BK
M LA1266A(1C104): 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. Terminal Layout 3. Block Diagram
AM AM AM FM FM
Mix IF IF STRQ IF -in Bypass FM-DET Vee
13 2 7
FM-IF
|
1
AM-OSC
OUT
Eel
Fal
_
fo
emer
(eee
ORE
Be
eee
U.
I 1
BYPASS | 2 AM-OSC H 1
i I
| BYPASS | 3 V-REF I IF Buffer IF Buffer Po rwar } a0 | FM out
GND | 4 AM-IN
FM-DET | 5 AM-MIX \ 19 |em Arc
FM-DET | 6 AM-AGC | peek fa
Veo | 7 AM-IF ie ANE out
sig | 8 AM ADJ. I i
FM-AFC
|
9
FM
ADJ
;
AGC
FM-IF | 10 AM OUT ! !
1 LED 1
AM-IF | 11 NAR S.M iriver re] ste
FM-OUT | 12 STRQ ; I
I
'
Ls
1 NOSig.oH
+2 ae phe Sig.»L
17| {16
AM AM-OSC AM-OSC NAR AGC AM FM GND
-in in out SM Adj Adj
4. Pin Functions
| FMIN | 1 | This is an input terminal of FM IF signal.
| Bypass | - | Bypass of FM IF amp.
Teuo [= | this the deve ground terminal ——SSSCSC~—CSCSCSY
This is the power supply terminal
SIG
| sig | 0 | When the machine is tunning ,this terminal becomes “L”.
FM AFC 0 | This is an output terminal of voltage for FM-AFC(Auto frequency control).
2
ro
i
Fans [=| conirl the tandowidth of signal meter
ro
a
iz
1
3
7
11
12
13
14
Taw [1 [input ofAM sgn,
15
16
17
Pameaee |]
Fanraaix [0 | this san output terminal for AM mi ———SSSSSCSCSSCSCSCSCSCSCC*S
Fawn [1 | this san input terminal for AM RF signal ———S=CSCsC~‘“‘“S*“‘“C“*‘“*‘“~*~*
Tviner | — | Resistor value between pind and pina desdes the Frequency width ofthe Input signal |
ose [=
19
20
21
22
| 23 This is a terminal of AM Local oscillation circuit
24
AM-OSC
O AM Local Oscillation Signal output.
UT
This is an AGC voltage input terminal for AM
1-46 (No.20434)