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LA1787M
Continued from preceding page.
Pin No.
Function
Description
Equivalent circuit
VCC
2 μ A
27
C2
VCC
27
MRC control voltage time
constant
The MRC detector time constant
is determined by a 100 ? resistor
and C2 when discharging and by
the 2-μA current and C2 when
100 ?
charging.
Pin 28
A13571
VREF
28
29
SNC control input
HCC control input
The sub-output is controlled by a
0 to 1-V input.
The high band frequency output is
controlled by a 0 to 1-V input.
It can also be controlled by the
MRC output.
Use a resistor of at least 100 k ?
when controlling with the pin 32
FM S-meter signal.
32
28
1 μ F
+
29
A13572
VREF
A13573
Continued on next page.
No. 6655-11/54
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LA1787NM 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC
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