JVC RX-807VTN

RX-807VTN
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. Top View 3. Block Diagram
AM AM AM FM FM
Mix IF IF STR iF in B FM-DET Vv
emar C11 24P1AM-oSC out Q ne ce
aypase EX? 23] AM-osc Po bs _ 3}__ 15) teh V---.
Bypass 22() V.ref t i
GND 21 AM-in 1
wee BB | gy Bh
ASDET 19. AM-AGC H
18] AM-IF \
Vv, FM AFC
sic 17am Adj. io
FM-AFC 160 FM Adj I AM IF DET 15] AM out
EhiE 151M out
AN-IF
14C]
NAR
SM
1
!
Ficout 131sTRQ i 1
1 LED i
1 Band width 1
I era esa Oe ENE ck Potty __ J Nosig.+4
24) fig] 6] Sig. +L
AM AM-OSC AM-OSC_—s NAR AGC AM EM GND
in in out sM Adj Adj
4. Pin Functions
FMiF | 1 [This is an input terminal of FM IF Signa, SSCS
Bypass_|
[Bypass
of
FMIFAmp.
SSS
GNO |__| This is the device ground terminal. ———SSSCSCSCS~C~CSCSCSCSCSCSCSCSCSCSCSCSCS
FMDET | [FM detect transformer. SSSSCSCSC~C“C“S~“~“~“~C~C~CS~S~Ss*S*S
Vec__| _|This i the power supply terminal SSCS
IGNAL_| © [Mute drive and signal stop drive outputwhentuning Active Low SOSOSCSC~*S
FMAFC [© [This is an output terminal of voltage for FM-AFC SS SSCSC~S~SCS
FMIF | © [When the IF REQ signal of IC102(LC7218) applies to pint3, the signal oF FM IF outputs =
AMIF_| © |When the IF REQ signal of IC102(LC7218) applies to pint3, the signal of AM IF outputs. |
FMout [OFM detection output
STRQ | 1 The IF-signals come out from pin10 (FM-IF) or pini1 (AM-IF) while this terminal goes to “High”.
NaRsM |" [Control the Bandowidth of AMsignal meter.
AMout [O [AM detection output SSCSC~“~S*S*~“S~SCSSSSCSC~*Y
FMiAdj
|
[For
adjust
the
stop
level(ormuteleve
of
FM
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ANA
AMAGC
ANNI
ANN
AMOSC
pee AM Local Oscillation Signal output.
out
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1-28 (No. 20333)
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