AN7470 Stereo Multiplex Demodulator Outline AN'7470 int
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AN7470
AN7470
Stereo Multiplex Demodulator
Outline
AN'7470 integrated circuit developed stereo multiplex demodulation used high class sterco tuner.
Features
Provided with forced automatic mono/stereo switching
shock noise during mono/stereo switching
distortion with post amplifier
Uotemm
it>nrnc
Descriptions
16-Lcad Plastic Package <16-DIP(c))
Name
Name
Composite Signal Input Buffer Amp. Output I.Ch, Amp. Feedback
RCh. Amp. Feedback
Stereo Indicator Freq. Monitor
Riot Detection Low-pass Filter
Pilot Signal Input
low-pass FIIUT
Amp. Output
I'LL Low-pass Filter
Amp. Output
Time Constant
Forced Mono.VCO Killer
Block Diagram
Dr^rr
XkH.
mni.'C
Panasonic
-288
AN7470
Absolute Maximum Katings 25'C)
Item Symbol Kating Unit
Stfppb' Voltage 14.4
ftmer Dissipation 75-0
Operating Ambient Temperature -20-475
Storage Temperature -55-+150
Electrical Characteristics (Vcc 12V. 25'C)
Item Symbol Trst Circuit Condition min.
Circuit Current Lamp Without input signal (Lamp OFF)
Lamp signal. 30mV (lamp
Separation Pilot -10*
Voltare Cain (Mono.)
Channel Balance
Total Harmonic Sterro 0.01
Disionicm Mono. THI) kHr. 0.02
Carrier Leakage 1kHz 901. IMot
PUol Signal Vohagi- Pilot signal 19kHz
Captirt- Rangt- Pilot signal
Signa Noise Ratio 1kHz. 300roVnw.
Solrl Tjrp. rrfrrrncrd value.
Test Circuit
470pF
lOOkO
l9kH.
Check
Yotmeter
0.017
AN7470
Siifw Svili Modulator
<ti%> lOuF'.
7632A
Cli. Output
0.001
'Sep.
L.P.F 19kHx /38k
Stabilized
Pomrr
Supply
22kn<ri%
Forced
K.tlrr
M7kn
[Wurtion
Volunctrr M.lrr
Freqvcacy Colter
Stabilii Pnwrr Supply
Panasonic
FM/AM Tuner AN7470
Sep-V| Sep-f. THD(Mono)
Uipul VulUKT traV)
THD-Vi
Input
Vp(ON/OW"Vcc
**** VolUffr
Softer VnlUgr
Nk-JuUuuu mjucuo (Ht)
Inpui VotocrVUnV^i
fvco
Vcc-12V V.-JOO.V IKHx
Panasonic
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