LA1787M Datasheet, PDF (11/54 Pages) Sanyo Semicon Device – Single-Chip Tuner IC for Car Radios

Continued from preceding page.
Pin No.
Function
LA1787M
Description
27
MRC control voltage time
constant
The MRC detector time constant
is determined by a 100 Ω resistor
and C2 when discharging and by
the 2-µA current and C2 when
charging.
Equivalent circuit
VCC
2µA
VCC
C2
27
100Ω
Pin 28
28
SNC control input
The sub-output is controlled by a
0 to 1-V input.
29
HCC control 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 kΩ
when controlling with the pin 32
FM S-meter signal.
VREF
A13571
28
A13572
VREF
32
29
+
1µF
A13573
Continued on next page.
No. 6655-11/54