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LA72670BM Datasheet(PDF) 8 Page - Sanyo Semicon Device

Part No. LA72670BM
Description  US multiplex modulation for VCR HiFi Sound Signal Processor
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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LA72670BM
No.A0644-8/20
Continued from preceding page.
DC voltage
Pin
No.
Pin Function Name
AC level
Function
Equivalent circuit
8
ALC detection terminal
for RF converter
DC;
This is ALC detector terminal for RF
converter and always ready for operation.
2k
10
25
35
50
70
79
L-GND
HEADAMP-GND
LOGIC-GND
R-GND
MTS-GND
AUDIO-GND
DC ; 2.5V
12
74
BS monitor input
terminal(L)
BS monitor input
terminal(R)
AC; -21.2dBv
BS monitor input terminal
200
Vref
DC ; 2.2V
13
48
Input changeover
switch output(L)
Input changeover
switch output(L)
AC; -21.2dBv
PB/REC switch output to transform REC and
PB signals into DC through a coupling
capacitor.
REC:ON
PB:ON
400
DC ; 2.5V
14
47
HiFi input terminal(L)
HiFi input terminal(R)
AC; -21.2dBv
HiFi input terminal after passing through a
coupling capacitor.
REC:ON
PB:ON
200
Vref
16
1/2 VCC terminal
DC; 2.5V
1/2 VCC terminal.
Serially-set reset is made with the external
capacitance C and internal resistance R (15k
Ω)
at rise of power supply. The reset time t is
expressed as follows: t = -CRln(0.2)
500
500
Continued on next page.




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